Refactor: SDK 28, androidx, ... (#221)

.gitignore

@@ -5,7 +5,6 @@ build
 bin
 gen
 project.properties
-gradle.properties
 local.properties
 *iml
 

android/build.gradle

@@ -1,5 +1,5 @@
 apply plugin: 'com.android.application'
-apply plugin: 'spoon'
+apply plugin: 'com.jaredsburrows.spoon'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
@@ -10,20 +10,21 @@ apply plugin: 'com.github.triplet.play'
 repositories {
     jcenter()
     mavenLocal()
+    google()
     maven { url 'https://jitpack.io' }
-    maven { url 'https://maven.google.com' }
+    maven { url 'https://oss.sonatype.org/content/repositories/snapshots' } // For Spoon snapshot, until 2.0.0 is released
 }
 
 android {
 
-    compileSdkVersion 25
+    compileSdkVersion 28
-    buildToolsVersion "25.0.3"
+    buildToolsVersion "28.0.3"
 
     defaultConfig {
         versionCode 349
         versionName "3.4.9"
-        minSdkVersion 9
+        minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 28
         applicationId "org.ligi.passandroid"
         testInstrumentationRunner "org.ligi.passandroid.AppReplacingRunner"
         archivesBaseName = "PassAndroid-$versionName"
@@ -62,6 +63,14 @@ android {
         }
 
     }
+
+    // hacky workaround to add spoon task that executes all variants
+    task spoon {
+        dependsOn {
+            tasks.findAll { task -> task.name != 'spoon' && task.name.startsWith('spoon') }
+        }
+    }
+
     android.variantFilter { variant ->
         def maps = variant.getFlavors().get(0).name
         def analytics = variant.getFlavors().get(1).name
@@ -85,7 +94,6 @@ android {
 
         exclude 'META-INF/maven/com.google.guava/guava/pom.properties'
         exclude 'META-INF/maven/com.google.guava/guava/pom.xml'
-
     }
 
     lintOptions {
@@ -100,97 +108,94 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
         }
     }
-}
+    compileOptions {
-
+        sourceCompatibility JavaVersion.VERSION_1_7
-configurations {
+        targetCompatibility JavaVersion.VERSION_1_7
-
+    }
-    // http://stackoverflow.com/questions/30578243/why-would-adding-espresso-contrib-cause-an-inflateexception
-    androidTestCompile.exclude group: 'com.android.support', module: 'appcompat-v7'
-    androidTestCompile.exclude group: 'com.android.support', module: 'design'
-    androidTestCompile.exclude group: 'com.android.support', module: 'support-v4'
-    androidTestCompile.exclude group: 'com.android.support', module: 'support-annotations'
-    androidTestCompile.exclude group: 'com.android.support', module: 'preference-v7'
-    androidTestCompile.exclude module: 'recyclerview-v7'
-    androidTestCompile.exclude module: 'kotlin-stdlib'
 }
 
 dependencies {
-    compile 'com.github.hotchemi:permissionsdispatcher:2.3.2'
+    implementation 'org.permissionsdispatcher:permissionsdispatcher:4.3.0'
-    kapt 'com.github.hotchemi:permissionsdispatcher-processor:2.3.2'
+    kapt 'org.permissionsdispatcher:permissionsdispatcher-processor:4.3.0'
 
-    compile 'com.github.salomonbrys.kodein:kodein:4.1.0'
+    implementation 'com.github.salomonbrys.kodein:kodein:4.1.0'
+    compileOnly 'org.glassfish:javax.annotation:3.1.1'
 
-    provided 'org.glassfish:javax.annotation:10.0-b28'
+    // spoon snapshot, until 2.0.0 is released
+    androidTestImplementation 'com.squareup.spoon:spoon-client:2.0.0-SNAPSHOT'
+    androidTestImplementation 'com.github.ligi:trulesk:0.28'
+    androidTestImplementation 'androidx.test:core:1.1.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-contrib:3.1.1'
+    androidTestImplementation 'com.squareup.assertj:assertj-android:1.2.0'
+    androidTestImplementation "org.mockito:mockito-core:$mockito_version"
+    androidTestImplementation 'com.linkedin.dexmaker:dexmaker-mockito:2.21.0'
+    androidTestImplementation 'com.google.code.findbugs:jsr305:3.0.2'
+    androidTestImplementation 'androidx.appcompat:appcompat:1.0.2'
+    androidTestImplementation 'com.google.android.material:material:1.0.0'
 
-    androidTestCompile 'com.github.ligi:trulesk:0.21'
+    implementation 'com.github.ligi:TouchImageView:2.1'
+    implementation 'com.github.ligi:ExtraCompats:0.5'
+    implementation 'net.lingala.zip4j:zip4j:1.3.2'
+    implementation 'com.jakewharton.threetenabp:threetenabp:1.2.0'
+    implementation 'org.greenrobot:eventbus:3.1.1'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 
-    androidTestCompile 'com.android.support.test.espresso:espresso-contrib:3.0.1'
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.preference:preference:1.0.0'
+    implementation 'androidx.annotation:annotation:1.0.2'
+    implementation 'androidx.recyclerview:recyclerview:1.0.0'
+    implementation 'androidx.cardview:cardview:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'net.i2p.android.ext:floatingactionbutton:1.10.1'
 
-    androidTestCompile 'com.squareup.assertj:assertj-android:1.1.1'
+    implementation 'com.github.ligi:KAXT:0.22'
+    implementation 'com.github.ligi:KAXTUI:0.8'
+    implementation 'com.github.ligi:loadtoast:1.10.11'
+    implementation 'com.github.ligi:tracedroid:2.1'
 
-    androidTestCompile "org.mockito:mockito-core:$mockito_version"
+    forPlayImplementation 'com.github.ligi.snackengage:snackengage-playrate:0.18'
-    androidTestCompile 'com.linkedin.dexmaker:dexmaker-mockito:2.2.0'
+    forFDroidImplementation 'com.github.ligi.snackengage:snackengage-playrate:0.18'
+    forAmazonImplementation 'com.github.ligi.snackengage:snackengage-amazonrate:0.18'
 
-    androidTestCompile 'com.google.code.findbugs:jsr305:3.0.2'
+    // https://medium.com/square-corner-blog/okhttp-3-13-requires-android-5-818bb78d07ce
+    // Don't update to >=3.13 before minSDK 21 + Java 8
+    //noinspection GradleDependency
+    implementation 'com.squareup.okhttp3:okhttp:3.12.1'
 
-    androidTestCompile "com.android.support:appcompat-v7:$support_version"
+    implementation 'com.larswerkman:HoloColorPicker:1.5'
-    androidTestCompile "com.android.support:design:$support_version"
+    implementation 'com.google.code.findbugs:jsr305:3.0.2'
 
-    compile 'com.github.ligi:TouchImageView:2.1'
+    // https://github.com/square/moshi/issues/738
-    compile 'com.github.ligi:ExtraCompats:0.4'
+    // either wait for ProGuard update or use R8 instead (android.enableR8=true)
+    //noinspection GradleDependency
+    implementation 'com.squareup.moshi:moshi:1.7.0'
 
-    compile 'net.lingala.zip4j:zip4j:1.3.2'
+    implementation 'com.chibatching.kotpref:kotpref:2.6.0'
-    compile 'com.jakewharton.threetenabp:threetenabp:1.1.0'
+    implementation 'com.chibatching.kotpref:initializer:2.6.0'
-    compile 'org.greenrobot:eventbus:3.0.0'
+    testImplementation 'androidx.annotation:annotation:1.0.2'
-
+    testImplementation 'com.squareup.assertj:assertj-android:1.2.0'
-    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    testImplementation 'junit:junit:4.12'
-
+    testImplementation "org.mockito:mockito-core:$mockito_version"
-    compile "com.android.support:support-annotations:$support_version"
+    testImplementation 'org.threeten:threetenbp:1.3.8'
-    compile "com.android.support:recyclerview-v7:$support_version"
-    compile "com.android.support:appcompat-v7:$support_version"
-    compile "com.android.support:cardview-v7:$support_version"
-    compile "com.android.support:design:$support_version"
-    compile "com.android.support:preference-v7:$support_version"
-
-    compile 'net.i2p.android.ext:floatingactionbutton:1.10.1'
-
-    compile 'com.github.ligi:KAXT:0.20'
-    compile 'com.github.ligi:KAXTUI:0.4'
-    compile 'com.github.ligi:loadtoast:1.10.11'
-    compile 'com.github.ligi:tracedroid:1.4'
-
-    forPlayCompile 'com.github.ligi.snackengage:snackengage-playrate:0.15'
-    forFDroidCompile 'com.github.ligi.snackengage:snackengage-playrate:0.15'
-    forAmazonCompile 'com.github.ligi.snackengage:snackengage-amazonrate:0.15'
-
-    compile 'com.squareup.okhttp3:okhttp:3.11.0'
-    compile 'com.larswerkman:HoloColorPicker:1.5'
-    compile 'com.google.code.findbugs:jsr305:3.0.2'
-    compile 'com.squareup.moshi:moshi:1.4.0'
-
-    compile "com.chibatching.kotpref:kotpref:2.6.0"
-    compile "com.chibatching.kotpref:initializer:2.6.0"
-
-    testCompile "com.android.support:support-annotations:$support_version"
-    testCompile 'com.squareup.assertj:assertj-android:1.1.1'
-    testCompile 'junit:junit:4.12'
-    testCompile "org.mockito:mockito-core:${mockito_version}"
-    testCompile 'org.threeten:threetenbp:1.3.7'
 
     // https://github.com/ligi/PassAndroid/issues/181
-    // Don't update to 3.3.1 before minSDK 19 - or replace zxing
+    // Don't upgrade before minSDK 19 - or replace zxing
-    compile 'com.google.zxing:core:3.3.0'
+    //noinspection GradleDependency
+    implementation 'com.google.zxing:core:3.3.0'
 
-    debugCompile 'com.squareup.leakcanary:leakcanary-android:1.4'
+    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.6.3'
-    releaseCompile 'com.squareup.leakcanary:leakcanary-android-no-op:1.4'
+    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.6.3'
 
-    withAnalyticsCompile "com.google.android.gms:play-services-analytics:$play_version"
+    // requires minSDK 16 according to docs, not sure if it causes an issue
-    withMapsCompile "com.google.android.gms:play-services-maps:$play_version"
+    withAnalyticsImplementation 'com.google.android.gms:play-services-analytics:16.0.8'
+    withMapsImplementation 'com.google.android.gms:play-services-maps:16.1.0'
 }
 
 spoon {
     debug = true
-    grantAllPermissions = true
+    grantAll = true
+    baseOutputDir = "build/spoon"
 }
 
 play {

android/proguard-project.txt

@@ -20,9 +20,9 @@
 # If your project uses WebView with JS, uncomment the following
 # and specify the fully qualified class name to the JavaScript interface
 # class:
--keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-   public *;
+#   public *;
-}
+#}
 
 # optimize
 -optimizationpasses 2
@@ -30,12 +30,6 @@
 -dontusemixedcaseclassnames
 -dontskipnonpubliclibraryclasses
 
-# AppCompat
-
--dontwarn android.support.v7.**
--keep class android.support.v7.** { *; }
--keep interface android.support.v7.** { *; }
-
 # Keep line numbers to alleviate debugging stack traces
 
 -renamesourcefileattribute SourceFile
@@ -44,7 +38,6 @@
 
 ### for api client
 
-
 -keepattributes Signature,RuntimeVisibleAnnotations,AnnotationDefault
 
 -keepclassmembers class * {
@@ -54,7 +47,6 @@
 # Needed by Guava
 # See https://groups.google.com/forum/#!topic/guava-discuss/YCZzeCiIVoI
 
-
 -dontwarn sun.misc.Unsafe
 -dontwarn com.google.common.collect.MinMaxPriorityQueue
 
@@ -72,9 +64,6 @@
 -keep class **$$ViewBinder { *; }
 -keepnames class * { @butterknife.Bind *;}
 
-#### for support 22
--dontwarn android.support.**
-
 #### for guava
 -dontwarn javax.annotation.**
 -dontwarn javax.inject.**
@@ -105,23 +94,20 @@
 -dontwarn java.nio.file.OpenOption
 -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
 
--keep public class com.google.android.gms.**
--dontwarn com.google.android.gms.**
-
 
 ## New rules for EventBus 3.0.x ##
 # http://greenrobot.org/eventbus/documentation/proguard/
 
 -keepattributes *Annotation*
--keepclassmembers class ** {
+-keepclassmembers class * {
     @org.greenrobot.eventbus.Subscribe <methods>;
-    }
+}
-    -keep enum org.greenrobot.eventbus.ThreadMode { *; }
+-keep enum org.greenrobot.eventbus.ThreadMode { *; }
 
 # Only required if you use AsyncExecutor
 -keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
     <init>(java.lang.Throwable);
-    }
+}
 
 ### for moshi
 

android/src/androidTest/assets/passes/opass_v2/minimal.json

@@ -15,7 +15,7 @@
    "message":"",
    "transfer":"barcode_QR",
    "alternative": {
-     "order":1,
+     "order":1
    }
   },
 

android/src/androidTest/java/org/ligi/passandroid/TestApp.kt

@@ -60,6 +60,6 @@ class TestApp : App() {
             fixedPassListPassStore().setList(emptyList())
         }
 
-        fun fixedPassListPassStore() = passStore() as FixedPassListPassStore
+        private fun fixedPassListPassStore() = passStore() as FixedPassListPassStore
     }
 }

android/src/androidTest/java/org/ligi/passandroid/TheAddToCalendar.kt

@@ -3,14 +3,14 @@ package org.ligi.passandroid
 import android.app.Activity.RESULT_CANCELED
 import android.app.Instrumentation
 import android.provider.CalendarContract
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.intent.Intents.intended
+import androidx.test.espresso.intent.Intents.intended
-import android.support.test.espresso.intent.Intents.intending
+import androidx.test.espresso.intent.Intents.intending
-import android.support.test.espresso.intent.matcher.IntentMatchers.hasExtra
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasExtra
-import android.support.test.espresso.intent.matcher.IntentMatchers.hasType
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasType
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.hamcrest.CoreMatchers.not
 import org.hamcrest.Matchers.allOf
 import org.junit.Rule
@@ -23,8 +23,8 @@ import org.threeten.bp.ZonedDateTime
 
 class TheAddToCalendar {
 
-    val time = ZonedDateTime.now()
+    private val time = ZonedDateTime.now()
-    val time2 = ZonedDateTime.now().plusHours(3)
+    private val time2 = ZonedDateTime.now().plusHours(3)
 
     @get:Rule
     var rule = TruleskIntentRule(PassListActivity::class.java, false)

android/src/androidTest/java/org/ligi/passandroid/TheBarCodeEditing.kt

@@ -1,13 +1,13 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.closeSoftKeyboard
+import androidx.test.espresso.Espresso.closeSoftKeyboard
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.*
+import androidx.test.espresso.action.ViewActions.*
-import android.support.test.espresso.assertion.ViewAssertions.doesNotExist
+import androidx.test.espresso.assertion.ViewAssertions.doesNotExist
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
-import android.support.test.filters.SdkSuppress
+import androidx.test.ext.junit.runners.AndroidJUnit4
-import android.support.test.runner.AndroidJUnit4
+import androidx.test.filters.SdkSuppress
 import com.github.salomonbrys.kodein.instance
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
@@ -27,9 +27,11 @@ class TheBarCodeEditing {
 
     val passStore: PassStore = App.kodein.instance()
 
-    lateinit var currentPass: PassImpl
+    private lateinit var currentPass: PassImpl
 
-    fun start(setupPass: (pass: PassImpl) -> Unit = {}) {
+    private fun start(setupPass: (pass: PassImpl) -> Unit = {}) {
+
+        TestApp.populatePassStoreWithSinglePass()
 
         currentPass = passStore.currentPass as PassImpl
 

android/src/androidTest/java/org/ligi/passandroid/TheBarcodeHelper.kt

@@ -1,6 +1,5 @@
 package org.ligi.passandroid
 
-
 import org.assertj.core.api.Assertions.assertThat
 import org.assertj.core.api.Fail.fail
 import org.junit.Test
@@ -48,7 +47,6 @@ class TheBarcodeHelper {
         } catch (e: Exception) {
             fail("could not create barcode", e)
         }
-
     }
 
     fun testBitmapSizeIsSane(format: PassBarCodeFormat) {
@@ -59,6 +57,5 @@ class TheBarcodeHelper {
         } catch (e: Exception) {
             fail("could not create barcode", e)
         }
-
     }
 }

android/src/androidTest/java/org/ligi/passandroid/TheCondensedPassViewMode.kt

@@ -1,9 +1,9 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withId
-import android.support.test.espresso.matcher.ViewMatchers.withText
+import androidx.test.espresso.matcher.ViewMatchers.withText
 import org.hamcrest.CoreMatchers.containsString
 import org.junit.Rule
 import org.junit.Test

android/src/androidTest/java/org/ligi/passandroid/TheEmptyPassList.kt

@@ -1,10 +1,10 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.isDisplayed
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
-import android.support.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withId
 import org.junit.Rule
 import org.junit.Test
 import org.ligi.passandroid.R.id.emptyView

android/src/androidTest/java/org/ligi/passandroid/TheFieldListEditFragment.kt

@@ -1,10 +1,10 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.replaceText
+import androidx.test.espresso.action.ViewActions.replaceText
-import android.support.test.espresso.action.ViewActions.scrollTo
+import androidx.test.espresso.action.ViewActions.scrollTo
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
 import org.junit.Test

android/src/androidTest/java/org/ligi/passandroid/TheFullscreenBarcodeActivity.kt

@@ -2,10 +2,10 @@ package org.ligi.passandroid
 
 import android.graphics.Bitmap
 import android.graphics.drawable.BitmapDrawable
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.isDisplayed
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
-import android.support.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withId
 import android.widget.ImageView
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
@@ -19,9 +19,9 @@ import org.ligi.passandroid.ui.FullscreenBarcodeActivity
 import org.ligi.trulesk.TruleskIntentRule
 import java.util.*
 
-class TheFullscreenBarcodeActivity {
+private const val BARCODE_MESSAGE = "2323"
 
-    private val BARCODE_MESSAGE = "2323"
+class TheFullscreenBarcodeActivity {
 
     @get:Rule
     var rule = TruleskIntentRule(FullscreenBarcodeActivity::class.java, false)
@@ -78,11 +78,11 @@ class TheFullscreenBarcodeActivity {
         val bitmap = bitmapDrawable.bitmap
 
         val bitmapToTest: Bitmap
-        if (format === PassBarCodeFormat.AZTEC) {
+        bitmapToTest = if (format === PassBarCodeFormat.AZTEC) {
             // not sure why - but for the decoder to pick up AZTEC it must have moar pixelz - smells like a zxing bug
-            bitmapToTest = Bitmap.createScaledBitmap(bitmap, bitmap.width * 2, bitmap.height * 2, false)
+            Bitmap.createScaledBitmap(bitmap, bitmap.width * 2, bitmap.height * 2, false)
         } else {
-            bitmapToTest = bitmap
+            bitmap
         }
 
         assertThat(bitmapToTest.decodeBarCode()).isEqualTo(BARCODE_MESSAGE)

android/src/androidTest/java/org/ligi/passandroid/TheHelpActivity.kt

@@ -1,9 +1,9 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
 import org.junit.Test

android/src/androidTest/java/org/ligi/passandroid/TheNavigationDrawer.kt

@@ -5,15 +5,15 @@ import android.app.Activity.RESULT_CANCELED
 import android.app.Instrumentation.ActivityResult
 import android.content.Intent.ACTION_SEND
 import android.content.Intent.ACTION_VIEW
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.Espresso.pressBack
+import androidx.test.espresso.Espresso.pressBack
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.contrib.DrawerActions.open
+import androidx.test.espresso.contrib.DrawerActions.open
-import android.support.test.espresso.intent.Intents.intended
+import androidx.test.espresso.intent.Intents.intended
-import android.support.test.espresso.intent.Intents.intending
+import androidx.test.espresso.intent.Intents.intending
-import android.support.test.espresso.intent.matcher.IntentMatchers.*
+import androidx.test.espresso.intent.matcher.IntentMatchers.*
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.hamcrest.Matchers.allOf
 import org.hamcrest.Matchers.not
 import org.junit.Rule
@@ -61,19 +61,6 @@ class TheNavigationDrawer {
         intended(allOf(hasAction(ACTION_VIEW), hasData("https://play.google.com/apps/testing/org.ligi.passandroid")))
     }
 
-
-    @Test
-    fun testCommunityClick() {
-        testThatNavigationDrawerOpens()
-        rule.screenShot("open_drawer")
-
-        intending(hasAction(ACTION_VIEW)).respondWith(ActivityResult(RESULT_CANCELED, null))
-
-        onView(withText(nav_community_on_google)).perform(click())
-
-        intended(allOf(hasAction(ACTION_VIEW), hasData("https://plus.google.com/communities/116353894782342292067")))
-    }
-
     @Test
     fun testGitHubClick() {
         testThatNavigationDrawerOpens()

android/src/androidTest/java/org/ligi/passandroid/ThePassEditActivity.kt

@@ -4,18 +4,16 @@ import android.annotation.TargetApi
 import android.app.Activity
 import android.app.Instrumentation
 import android.content.Intent
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.*
+import androidx.test.espresso.action.ViewActions.*
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.intent.Intents.intended
+import androidx.test.espresso.intent.Intents.intended
-import android.support.test.espresso.intent.Intents.intending
+import androidx.test.espresso.intent.Intents.intending
-import android.support.test.espresso.intent.matcher.IntentMatchers.hasAction
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasAction
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
 import org.junit.Test
-import org.ligi.passandroid.R.id.*
-import org.ligi.passandroid.R.string.*
 import org.ligi.passandroid.model.pass.PassType.COUPON
 import org.ligi.passandroid.model.pass.PassType.EVENT
 import org.ligi.passandroid.ui.PassEditActivity
@@ -27,15 +25,16 @@ class ThePassEditActivity {
     val passStore = TestApp.passStore()
 
     @get:Rule
-    var rule = TruleskIntentRule(PassEditActivity::class.java)
+    var rule = TruleskIntentRule(PassEditActivity::class.java) {
+        TestApp.populatePassStoreWithSinglePass()
+    }
 
     @Test
     fun testSetToEventWorks() {
+        onView(withId(R.id.categoryView)).perform(click())
 
-        onView(withId(categoryView)).perform(click())
+        onView(withText(R.string.select_category_dialog_title)).perform(click())
-
+        onView(withText(R.string.category_event)).perform(click())
-        onView(withText(select_category_dialog_title)).perform(click())
-        onView(withText(category_event)).perform(click())
         assertThat(passStore.currentPass!!.type).isEqualTo(EVENT)
 
         rule.screenShot("edit_set_event")
@@ -43,10 +42,10 @@ class ThePassEditActivity {
 
     @Test
     fun testSetToCouponWorks() {
-        onView(withId(categoryView)).perform(click())
+        onView(withId(R.id.categoryView)).perform(click())
 
-        onView(withText(select_category_dialog_title)).perform(click())
+        onView(withText(R.string.select_category_dialog_title)).perform(click())
-        onView(withText(category_coupon)).perform(click())
+        onView(withText(R.string.category_coupon)).perform(click())
         assertThat(passStore.currentPass!!.type).isEqualTo(COUPON)
 
         rule.screenShot("edit_set_coupon")
@@ -55,7 +54,7 @@ class ThePassEditActivity {
     @Test
     fun testSetDescriptionWorks() {
 
-        onView(withId(passTitle)).perform(clearText(), typeText("test description"))
+        onView(withId(R.id.passTitle)).perform(clearText(), typeText("test description"))
         assertThat(passStore.currentPass!!.description).isEqualTo("test description")
 
         rule.screenShot("edit_set_description")
@@ -65,10 +64,10 @@ class ThePassEditActivity {
     @Test
     fun testColorWheelIsThere() {
 
-        onView(withId(categoryView)).perform(click())
+        onView(withId(R.id.categoryView)).perform(click())
-        onView(withText(change_color_dialog_title)).perform(click())
+        onView(withText(R.string.change_color_dialog_title)).perform(click())
 
-        onView(withId(colorPicker)).check(matches(isDisplayed()))
+        onView(withId(R.id.colorPicker)).check(matches(isDisplayed()))
 
         rule.screenShot("edit_set_color")
     }

android/src/androidTest/java/org/ligi/passandroid/ThePassListActivity.kt

@@ -2,11 +2,11 @@ package org.ligi.passandroid
 
 import android.annotation.TargetApi
 import android.os.Build
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.Espresso.pressBack
+import androidx.test.espresso.Espresso.pressBack
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.junit.Rule
 import org.junit.Test
 import org.ligi.passandroid.R.id.pass_recyclerview

android/src/androidTest/java/org/ligi/passandroid/ThePassListSwiping.kt

@@ -1,11 +1,11 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.action.ViewActions.typeText
+import androidx.test.espresso.action.ViewActions.typeText
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
-import android.support.v7.widget.helper.ItemTouchHelper
+import androidx.recyclerview.widget.ItemTouchHelper
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
 import org.junit.Test
@@ -14,6 +14,8 @@ import org.ligi.passandroid.ui.PassListActivity
 import org.ligi.passandroid.ui.PassListFragment
 import org.ligi.trulesk.TruleskIntentRule
 
+const val CUSTOM_PROBE = "FOO_PROBE"
+
 class ThePassListSwiping {
 
     @get:Rule
@@ -42,7 +44,6 @@ class ThePassListSwiping {
 
     @Test
     fun testWeCanMoveToCustom() {
-        val CUSTOM_PROBE = "FOO_PROBE"
 
         fakeSwipeLeft()
 

android/src/androidTest/java/org/ligi/passandroid/ThePassViewActivity.kt

@@ -1,12 +1,13 @@
 package org.ligi.passandroid
 
 import android.annotation.TargetApi
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.assertion.ViewAssertions.doesNotExist
+import androidx.test.espresso.assertion.ViewAssertions.doesNotExist
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.*
+import androidx.test.espresso.matcher.ViewMatchers.*
 import org.hamcrest.core.IsNot.not
+import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.ligi.passandroid.model.pass.BarCode
@@ -21,11 +22,16 @@ import java.util.*
 @TargetApi(14)
 class ThePassViewActivity {
 
-    internal fun getActPass() = TestApp.passStore().currentPass as PassImpl
+    private fun getActPass() = TestApp.passStore().currentPass as PassImpl
 
     @get:Rule
     var rule = TruleskActivityRule(PassViewActivity::class.java, false)
 
+    @Before
+    fun before() {
+        TestApp.populatePassStoreWithSinglePass()
+    }
+
     @Test
     fun testThatDescriptionIsThere() {
         rule.launchActivity(null)
@@ -35,7 +41,7 @@ class ThePassViewActivity {
 
     @Test
     fun testDateIsGoneWhenPassbookHasNoDate() {
-        getActPass().validTimespans = ArrayList<PassImpl.TimeSpan>()
+        getActPass().validTimespans = ArrayList()
         rule.launchActivity(null)
 
         onView(withId(R.id.date)).check(matches(not(isDisplayed())))
@@ -92,7 +98,7 @@ class ThePassViewActivity {
 
     @Test
     fun testLinkToCalendarIsNotThereWhenPassbookHasNoDate() {
-        getActPass().validTimespans = ArrayList<PassImpl.TimeSpan>()
+        getActPass().validTimespans = ArrayList()
         rule.launchActivity(null)
 
         onView(withText(R.string.pass_to_calendar)).check(matches(not(isDisplayed())))

android/src/androidTest/java/org/ligi/passandroid/ThePassViewHolder.kt

@@ -1,9 +1,9 @@
 package org.ligi.passandroid
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.assertion.ViewAssertions
+import androidx.test.espresso.assertion.ViewAssertions
-import android.support.test.espresso.matcher.ViewMatchers.isDisplayed
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
-import android.support.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withId
 import org.hamcrest.CoreMatchers.not
 import org.junit.Rule
 import org.junit.Test
@@ -16,7 +16,10 @@ import org.threeten.bp.ZonedDateTime
 
 class ThePassViewHolder {
 
-    val currentPass by lazy { App.passStore.currentPass as PassImpl }
+    private val currentPass by lazy {
+        TestApp.populatePassStoreWithSinglePass()
+        App.passStore.currentPass as PassImpl
+    }
 
     @get:Rule
     var rule = TruleskActivityRule(PassListActivity::class.java, false)

android/src/androidTest/java/org/ligi/passandroid/ThePastLocationsStore.kt

@@ -2,7 +2,7 @@ package org.ligi.passandroid
 
 import android.content.Context
 import android.content.SharedPreferences
-import android.support.test.InstrumentationRegistry.getInstrumentation
+import androidx.test.platform.app.InstrumentationRegistry
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.After
 import org.junit.Rule
@@ -17,13 +17,14 @@ class ThePastLocationsStore {
 
     @get:Rule
     var rule = TruleskActivityRule(PassViewActivity::class.java) {
+        TestApp.populatePassStoreWithSinglePass()
         MockitoAnnotations.initMocks(this)
     }
 
     @Mock
     lateinit var tracker: Tracker
 
-    val prefs: SharedPreferences by lazy { getInstrumentation().context.getSharedPreferences("" + System.currentTimeMillis() / 100000, Context.MODE_PRIVATE) }
+    private val prefs: SharedPreferences by lazy { InstrumentationRegistry.getInstrumentation().context.getSharedPreferences("" + System.currentTimeMillis() / 100000, Context.MODE_PRIVATE) }
 
     @After
     fun tearDown() {
@@ -34,7 +35,7 @@ class ThePastLocationsStore {
     fun testPastLocationsStoreShouldNeverContainMoreThanMaxElements() {
         val tested = PastLocationsStore(prefs, tracker)
 
-        for (i in 0..PastLocationsStore.MAX_ELEMENTS * 2 - 1) {
+        for (i in 0 until PastLocationsStore.MAX_ELEMENTS * 2) {
             tested.putLocation("" + i)
         }
 
@@ -44,7 +45,7 @@ class ThePastLocationsStore {
 
     @Test
     fun testPastLocationsStoreShouldStoreOnlyOneOfAKind() {
-        val tested = PastLocationsStore(prefs, tracker!!)
+        val tested = PastLocationsStore(prefs, tracker)
 
         for (i in 0..2) {
             tested.putLocation("foo")

android/src/androidTest/java/org/ligi/passandroid/ThePreferenceActivity.kt

@@ -1,10 +1,10 @@
 package org.ligi.passandroid
 
 import android.os.Build
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.action.ViewActions.click
+import androidx.test.espresso.action.ViewActions.click
-import android.support.test.espresso.matcher.ViewMatchers.withText
+import androidx.test.espresso.matcher.ViewMatchers.withText
-import android.support.v7.app.AppCompatDelegate
+import androidx.appcompat.app.AppCompatDelegate
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.Rule
 import org.junit.Test
@@ -20,7 +20,7 @@ class ThePreferenceActivity {
     @get:Rule
     val rule = TruleskActivityRule(PreferenceActivity::class.java)
 
-    val androidSettings by lazy { AndroidSettings(rule.activity) }
+    private val androidSettings by lazy { AndroidSettings(rule.activity) }
 
     @Test
     fun autoLightToggles() {

android/src/androidTest/java/org/ligi/passandroid/TheUnzipPassController.java

@@ -1,6 +1,6 @@
 package org.ligi.passandroid;
 
-import android.support.test.InstrumentationRegistry;
+import androidx.test.platform.app.InstrumentationRegistry;
 import java.io.InputStream;
 import org.junit.Before;
 import org.junit.Test;
@@ -27,7 +27,7 @@ public class TheUnzipPassController  {
     PassStore passStore;
 
     @Before
-    public void setUp() throws Exception {
+    public void setUp() {
         MockitoAnnotations.initMocks(this);
     }
 

android/src/androidTest/java/org/ligi/passandroid/functions/FabFunctions.kt

@@ -1,8 +1,8 @@
 package org.ligi.passandroid.functions
 
-import android.support.test.espresso.UiController
+import androidx.test.espresso.UiController
-import android.support.test.espresso.ViewAction
+import androidx.test.espresso.ViewAction
-import android.support.test.espresso.matcher.ViewMatchers.isAssignableFrom
+import androidx.test.espresso.matcher.ViewMatchers.isAssignableFrom
 import android.view.View
 import net.i2p.android.ext.floatingactionbutton.FloatingActionsMenu
 import org.hamcrest.Description

android/src/androidTest/java/org/ligi/passandroid/functions/HelpChecks.kt

@@ -1,12 +1,11 @@
 package org.ligi.passandroid.functions
 
-import android.support.test.espresso.Espresso.onView
+import androidx.test.espresso.Espresso.onView
-import android.support.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.assertion.ViewAssertions.matches
-import android.support.test.espresso.matcher.ViewMatchers.isDisplayed
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
-import android.support.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.matcher.ViewMatchers.withId
 import org.ligi.passandroid.R
 
-
 fun checkThatHelpIsThere() {
     onView(withId(R.id.help_text)).check(matches(isDisplayed()))
 }

android/src/androidTest/java/org/ligi/passandroid/functions/PassFromAssetLoader.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.functions
 
 import android.content.Context
-import android.support.test.InstrumentationRegistry
+import androidx.test.platform.app.InstrumentationRegistry
 import org.assertj.core.api.Fail.fail
 import org.ligi.passandroid.model.InputStreamWithSource
 import org.ligi.passandroid.model.PassStore

android/src/androidTest/java/org/ligi/passandroid/injections/FixedPassListPassStore.kt

@@ -10,7 +10,7 @@ class FixedPassListPassStore(private var passes: List<Pass>) : PassStore {
     override lateinit var classifier: PassClassifier
 
     init {
-        classifier = PassClassifier(HashMap<String, String>(), this)
+        classifier = PassClassifier(HashMap(), this)
     }
 
     fun setList(newPasses: List<Pass>, newCurrentPass: Pass? = newPasses.firstOrNull()) {
@@ -19,7 +19,7 @@ class FixedPassListPassStore(private var passes: List<Pass>) : PassStore {
         passMap.clear()
         passMap.putAll(createHashMap())
 
-        classifier = PassClassifier(HashMap<String, String>(), this)
+        classifier = PassClassifier(HashMap(), this)
     }
 
     override var currentPass: Pass? = null
@@ -31,7 +31,7 @@ class FixedPassListPassStore(private var passes: List<Pass>) : PassStore {
     private fun createHashMap(): HashMap<String, Pass> {
         val hashMap = HashMap<String, Pass>()
 
-        passes.forEach { hashMap.put(it.id, it) }
+        passes.forEach { hashMap[it.id] = it }
         return hashMap
     }
 

android/src/main/AndroidManifest.xml

@@ -29,6 +29,7 @@
 
         <receiver
                 android:name=".InstallListener"
+                android:permission="android.permission.INSTALL_PACKAGES"
                 android:exported="true">
             <intent-filter>
                 <action android:name="com.android.vending.INSTALL_REFERRER"/>
@@ -36,7 +37,7 @@
         </receiver>
 
         <provider
-                android:name="android.support.v4.content.FileProvider"
+                android:name="androidx.core.content.FileProvider"
                 android:authorities="@string/authority_fileprovider"
                 android:grantUriPermissions="true"
                 android:exported="false">
@@ -122,47 +123,35 @@
                 <category android:name="android.intent.category.DEFAULT"/>
                 <category android:name="android.intent.category.BROWSABLE"/>
 
-                <data android:mimeType="application/vnd.espass-espass"/>
+                <data android:scheme="http" android:mimeType="application/vnd.espass-espass"/>
-            </intent-filter>
+                <data android:scheme="https" android:mimeType="application/vnd.espass-espass"/>
-            <intent-filter>
+                <data android:scheme="content" android:mimeType="application/vnd.espass-espass"/>
-                <action android:name="android.intent.action.VIEW"/>
+                <data android:scheme="file" android:mimeType="application/vnd.espass-espass"/>
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:scheme="http" android:mimeType="application/vnd.espass-espass+zip"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <data android:scheme="https" android:mimeType="application/vnd.espass-espass+zip"/>
+                <data android:scheme="content" android:mimeType="application/vnd.espass-espass+zip"/>
+                <data android:scheme="file" android:mimeType="application/vnd.espass-espass+zip"/>
 
-                <data android:mimeType="application/vnd.espass-espass+zip"/>
+                <data android:scheme="http" android:mimeType="application/vnd.apple.pkpass"/>
-            </intent-filter>
+                <data android:scheme="https" android:mimeType="application/vnd.apple.pkpass"/>
-            <intent-filter>
+                <data android:scheme="content" android:mimeType="application/vnd.apple.pkpass"/>
-                <action android:name="android.intent.action.VIEW"/>
+                <data android:scheme="file" android:mimeType="application/vnd.apple.pkpass"/>
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:scheme="http" android:mimeType="application/pkpass"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <data android:scheme="https" android:mimeType="application/pkpass"/>
+                <data android:scheme="content" android:mimeType="application/pkpass"/>
+                <data android:scheme="file" android:mimeType="application/pkpass"/>
 
-                <data android:mimeType="application/vnd.apple.pkpass"/>
+                <data android:scheme="http" android:mimeType="application/vndapplepkpass"/>
-            </intent-filter>
+                <data android:scheme="https" android:mimeType="application/vndapplepkpass"/>
-            <intent-filter>
+                <data android:scheme="content" android:mimeType="application/vndapplepkpass"/>
-                <action android:name="android.intent.action.VIEW"/>
+                <data android:scheme="file" android:mimeType="application/vndapplepkpass"/>
 
-                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:scheme="http" android:mimeType="application/vnd-com.apple.pkpass"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <data android:scheme="https" android:mimeType="application/vnd-com.apple.pkpass"/>
-
+                <data android:scheme="content" android:mimeType="application/vnd-com.apple.pkpass"/>
-                <data android:mimeType="application/pkpass"/>
+                <data android:scheme="file" android:mimeType="application/vnd-com.apple.pkpass"/>
-            </intent-filter>
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
-
-                <data android:mimeType="application/vndapplepkpass"/>
-            </intent-filter>
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
-
-                <data android:mimeType="application/vnd-com.apple.pkpass"/>
             </intent-filter>
 
             <intent-filter>
@@ -616,17 +605,9 @@
                 <category android:name="android.intent.category.DEFAULT"/>
                 <category android:name="android.intent.category.BROWSABLE"/>
 
-                <data android:mimeType="application/x-pdf"/>
+                <data android:scheme="content" android:mimeType="application/x-pdf"/>
+                <data android:scheme="content" android:mimeType="application/pdf"/>
             </intent-filter>
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
-
-                <data android:mimeType="application/pdf"/>
-            </intent-filter>
-
             <intent-filter>
                 <action android:name="android.intent.action.VIEW"/>
 
@@ -1071,22 +1052,6 @@
                         android:pathPattern="/.*\\.pkpass"
                         android:scheme="content"/>
             </intent-filter>
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
-
-                <data android:mimeType="application/vnd.apple.pkpass"/>
-            </intent-filter>
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
-
-                <data android:mimeType="application/vnd-com.apple.pkpass"/>
-            </intent-filter>
 
             <intent-filter>
                 <action android:name="android.intent.action.VIEW"/>

android/src/main/java/com/ibm/icu/text/CharsetDetector.java

@@ -1,9 +1,9 @@
-/**
+/*
-*******************************************************************************
+ *******************************************************************************
-* Copyright (C) 2005-2014, International Business Machines Corporation and    *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
-* others. All Rights Reserved.                                                *
+ * others. All Rights Reserved.                                                *
-*******************************************************************************
+ *******************************************************************************
-*/
+ */
 package com.ibm.icu.text;
 
 import java.io.IOException;
@@ -35,6 +35,7 @@ import java.util.List;
  * <p/>
  * @stable ICU 3.4
  */
+@SuppressWarnings("ALL")
 public class CharsetDetector {
 
 //   Question: Should we have getters corresponding to the setters for input text
@@ -182,7 +183,7 @@ public class CharsetDetector {
      * @stable ICU 3.4
      */
     public CharsetMatch[] detectAll() {
-        ArrayList<CharsetMatch>         matches = new ArrayList<CharsetMatch>();
+        ArrayList<CharsetMatch> matches = new ArrayList<>();
         
         MungeInput();  // Strip html markup, collect byte stats.
         
@@ -344,7 +345,7 @@ public class CharsetDetector {
      *               it by removing what appears to be html markup.
      */
     private void MungeInput() {
-        int srci = 0;
+        int srci;
         int dsti = 0;
         byte b;
         boolean  inMarkup = false;
@@ -473,7 +474,7 @@ public class CharsetDetector {
     private static final List<CSRecognizerInfo> ALL_CS_RECOGNIZERS;
 
     static {
-        List<CSRecognizerInfo> list = new ArrayList<CSRecognizerInfo>();
+        List<CSRecognizerInfo> list = new ArrayList<>();
 
         list.add(new CSRecognizerInfo(new CharsetRecog_UTF8(), true));
         list.add(new CSRecognizerInfo(new CharsetRecog_Unicode.CharsetRecog_UTF_16_BE(), true));
@@ -522,7 +523,7 @@ public class CharsetDetector {
      */
     @Deprecated
     public String[] getDetectableCharsets() {
-        List<String> csnames = new ArrayList<String>(ALL_CS_RECOGNIZERS.size());
+        List<String> csnames = new ArrayList<>(ALL_CS_RECOGNIZERS.size());
         for (int i = 0; i < ALL_CS_RECOGNIZERS.size(); i++) {
             CSRecognizerInfo rcinfo = ALL_CS_RECOGNIZERS.get(i);
             boolean active = (fEnabledRecognizers == null) ? rcinfo.isDefaultEnabled : fEnabledRecognizers[i];
@@ -530,7 +531,7 @@ public class CharsetDetector {
                 csnames.add(rcinfo.recognizer.getName());
             }
         }
-        return csnames.toArray(new String[csnames.size()]);
+        return csnames.toArray(new String[0]);
     }
 
     /**

android/src/main/java/com/ibm/icu/text/CharsetMatch.java

@@ -1,9 +1,9 @@
-/**
+/*
-*******************************************************************************
+ *******************************************************************************
-* Copyright (C) 2005-2012, International Business Machines Corporation and    *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
-* others. All Rights Reserved.                                                *
+ * others. All Rights Reserved.                                                *
-*******************************************************************************
+ *******************************************************************************
-*/
+ */
 package com.ibm.icu.text;
 
 import java.io.ByteArrayInputStream;
@@ -26,6 +26,7 @@ import java.io.Reader;
  *
  * @stable ICU 3.4
  */
+@SuppressWarnings("ALL")
 public class CharsetMatch implements Comparable<CharsetMatch> {
 
     
@@ -85,13 +86,13 @@ public class CharsetMatch implements Comparable<CharsetMatch> {
      * @stable ICU 3.4
      */
     public String getString(int maxLength) throws java.io.IOException {
-        String result = null;
+        String result;
         if (fInputStream != null) {
             StringBuilder sb = new StringBuilder();
             char[] buffer = new char[1024];
             Reader reader = getReader();
             int max = maxLength < 0? Integer.MAX_VALUE : maxLength;
-            int bytesRead = 0;
+            int bytesRead;
             
             while ((bytesRead = reader.read(buffer, 0, Math.min(max, 1024))) >= 0) {
                 sb.append(buffer, 0, bytesRead);
@@ -108,6 +109,7 @@ public class CharsetMatch implements Comparable<CharsetMatch> {
              * be used to open a charset (e.g. IBM424_rtl). The ending '_rtl' or 'ltr'
              * should be stripped off before creating the string.
              */
+            //noinspection IndexOfReplaceableByContains
             int startSuffix = name.indexOf("_rtl") < 0 ? name.indexOf("_ltr") : name.indexOf("_rtl");
             if (startSuffix > 0) {
                 name = name.substring(0, startSuffix);
@@ -234,7 +236,7 @@ public class CharsetMatch implements Comparable<CharsetMatch> {
                                                       //  If user gave us a byte array, this is it.
     private int                 fRawLength;           // Length of data in fRawInput array.
 
-    private InputStream         fInputStream = null;  // User's input stream, or null if the user
+    private InputStream         fInputStream;  // User's input stream, or null if the user
                                                       //   gave us a byte array.
     
     private String              fCharsetName;         // The name of the charset this CharsetMatch

android/src/main/java/com/ibm/icu/text/CharsetRecog_2022.java

@@ -1,9 +1,9 @@
 /*
-*******************************************************************************
+ *******************************************************************************
-* Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
-* others. All Rights Reserved.                                                *
+ * others. All Rights Reserved.                                                *
-*******************************************************************************
+ *******************************************************************************
-*/
+ */
 package com.ibm.icu.text;
 
 /**
@@ -14,6 +14,7 @@ package com.ibm.icu.text;
  * 
  *                           The separate classes are nested within this class.
  */
+@SuppressWarnings("ALL")
 abstract class CharsetRecog_2022 extends CharsetRecognizer {
 
     
@@ -44,7 +45,7 @@ abstract class CharsetRecog_2022 extends CharsetRecognizer {
                             byte [] seq = escapeSequences[escN];
                             
                             if ((textLen - i) < seq.length) {
-                                continue checkEscapes;
+                                continue;
                             }
                             
                             for (j=1; j<seq.length; j++) {
@@ -92,9 +93,6 @@ abstract class CharsetRecog_2022 extends CharsetRecognizer {
         return quality;
     }
 
-    
- 
-    
     static class CharsetRecog_2022JP extends CharsetRecog_2022 {
         private byte [] [] escapeSequences = {
                 {0x1b, 0x24, 0x28, 0x43},   // KS X 1001:1992

android/src/main/java/com/ibm/icu/text/CharsetRecog_UTF8.java

@@ -1,14 +1,15 @@
-/**
+/*
-*******************************************************************************
+ *******************************************************************************
-* Copyright (C) 2005 - 2014, International Business Machines Corporation and  *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
-* others. All Rights Reserved.                                                *
+ * others. All Rights Reserved.                                                *
-*******************************************************************************
+ *******************************************************************************
-*/
+ */
 package com.ibm.icu.text;
 
 /**
  * Charset recognizer for UTF-8
  */
+@SuppressWarnings("ALL")
 class CharsetRecog_UTF8 extends CharsetRecognizer {
 
     String getName() {
@@ -24,7 +25,7 @@ class CharsetRecog_UTF8 extends CharsetRecognizer {
         int         numInvalid = 0;
         byte        input[] = det.fRawInput;
         int         i;
-        int         trailBytes = 0;
+        int         trailBytes;
         int         confidence;
         
         if (det.fRawLength >= 3 && 

android/src/main/java/com/ibm/icu/text/CharsetRecog_Unicode.java

@@ -12,6 +12,7 @@ package com.ibm.icu.text;
  * This class matches UTF-16 and UTF-32, both big- and little-endian. The
  * BOM will be used if it is present.
  */
+@SuppressWarnings("ALL")
 abstract class CharsetRecog_Unicode extends CharsetRecognizer {
 
     /* (non-Javadoc)
@@ -171,7 +172,7 @@ abstract class CharsetRecog_Unicode extends CharsetRecognizer {
     {
         int getChar(byte[] input, int index)
         {
-            return (input[index + 0] & 0xFF) << 24 | (input[index + 1] & 0xFF) << 16 |
+            return (input[index] & 0xFF) << 24 | (input[index + 1] & 0xFF) << 16 |
                    (input[index + 2] & 0xFF) <<  8 | (input[index + 3] & 0xFF);
         }
         
@@ -187,7 +188,7 @@ abstract class CharsetRecog_Unicode extends CharsetRecognizer {
         int getChar(byte[] input, int index)
         {
             return (input[index + 3] & 0xFF) << 24 | (input[index + 2] & 0xFF) << 16 |
-                   (input[index + 1] & 0xFF) <<  8 | (input[index + 0] & 0xFF);
+                   (input[index + 1] & 0xFF) <<  8 | (input[index] & 0xFF);
         }
         
         String getName()

android/src/main/java/com/ibm/icu/text/CharsetRecog_mbcs.java

@@ -1,9 +1,8 @@
 /*
- ****************************************************************************
+ *******************************************************************************
- * Copyright (C) 2005-2012, International Business Machines Corporation and *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
  * others. All Rights Reserved.                                                *
- ****************************************************************************
+ *******************************************************************************
- *
  */
 package com.ibm.icu.text;
 
@@ -21,6 +20,7 @@ import java.util.Arrays;
  *                   encodings to be checked.  The specific encoding being recognized
  *                   is determined by subclass.
  */
+@SuppressWarnings("ALL")
 abstract class CharsetRecog_mbcs extends CharsetRecognizer {
 
    /**
@@ -157,8 +157,7 @@ abstract class CharsetRecog_mbcs extends CharsetRecognizer {
                  done = true;
                  return -1;
              }
-             int byteValue = (int)det.fRawInput[nextIndex++] & 0x00ff;
+             return (int)det.fRawInput[nextIndex++] & 0x00ff;
-             return byteValue;
          }       
      }
      
@@ -321,9 +320,9 @@ abstract class CharsetRecog_mbcs extends CharsetRecognizer {
          boolean nextChar(iteratedChar it, CharsetDetector det) {
              it.index = it.nextIndex;
              it.error = false;
-             int firstByte  = 0;
+             int firstByte;
-             int secondByte = 0;
+             int secondByte;
-             int thirdByte  = 0;
+             int thirdByte;
              //int fourthByte = 0;
              
              buildChar: {
@@ -372,7 +371,7 @@ abstract class CharsetRecog_mbcs extends CharsetRecognizer {
                  }
               }
              
-             return (it.done == false);
+             return (!it.done);
          }
          
          /**
@@ -461,10 +460,10 @@ abstract class CharsetRecog_mbcs extends CharsetRecognizer {
          boolean nextChar(iteratedChar it, CharsetDetector det) {
              it.index = it.nextIndex;
              it.error = false;
-             int firstByte  = 0;
+             int firstByte;
-             int secondByte = 0;
+             int secondByte;
-             int thirdByte  = 0;
+             int thirdByte;
-             int fourthByte = 0;
+             int fourthByte;
              
              buildChar: {
                  firstByte = it.charValue = it.nextByte(det); 
@@ -483,7 +482,7 @@ abstract class CharsetRecog_mbcs extends CharsetRecognizer {
                  secondByte = it.nextByte(det);
                  it.charValue = (it.charValue << 8) | secondByte;
                  
-                 if (firstByte >= 0x81 && firstByte <= 0xFE) {
+                 if (firstByte <= 0xFE) {
                      // Two byte Char
                      if ((secondByte >= 0x40 && secondByte <= 0x7E) || (secondByte >=80 && secondByte <=0xFE)) {
                          break buildChar;
@@ -504,11 +503,10 @@ abstract class CharsetRecog_mbcs extends CharsetRecognizer {
                      }
                      
                      it.error = true;
-                     break buildChar;
                  }
              }
                  
-             return (it.done == false);
+             return !it.done;
          }
          
          static int [] commonChars = 

android/src/main/java/com/ibm/icu/text/CharsetRecog_sbcs.java

@@ -1,17 +1,16 @@
 /*
- ****************************************************************************
+ *******************************************************************************
- * Copyright (C) 2005-2013, International Business Machines Corporation and *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
  * others. All Rights Reserved.                                                *
- ************************************************************************** *
+ *******************************************************************************
- *
  */
-
 package com.ibm.icu.text;
 
 /**
  * This class recognizes single-byte encodings. Because the encoding scheme is so
  * simple, language statistics are used to do the matching.
  */
+@SuppressWarnings("ALL")
 abstract class CharsetRecog_sbcs extends CharsetRecognizer {
 
     /* (non-Javadoc)
@@ -25,7 +24,7 @@ abstract class CharsetRecog_sbcs extends CharsetRecognizer {
         private static final int N_GRAM_MASK = 0xFFFFFF;
 
         protected int byteIndex = 0;
-        private int ngram = 0;
+        private int ngram;
         
         private int[] ngramList;
         protected byte[] byteMap;
@@ -273,7 +272,7 @@ abstract class CharsetRecog_sbcs extends CharsetRecognizer {
         return parser.parse(det, spaceChar);
     }
     
-    int matchIBM420(CharsetDetector det, int[] ngrams,  byte[] byteMap, byte spaceChar){
+    int matchIBM420(CharsetDetector det, int[] ngrams, byte[] byteMap, @SuppressWarnings("SameParameterValue") byte spaceChar){
         NGramParser_IBM420 parser = new NGramParser_IBM420(ngrams, byteMap);
         return parser.parse(det, spaceChar);
     }

android/src/main/java/com/ibm/icu/text/CharsetRecognizer.java

@@ -1,9 +1,9 @@
-/**
+/*
-*******************************************************************************
+ *******************************************************************************
-* Copyright (C) 2005-2012, International Business Machines Corporation and    *
+ * Copyright (C) 2005 - 2012, International Business Machines Corporation and  *
-* others. All Rights Reserved.                                                *
+ * others. All Rights Reserved.                                                *
-*******************************************************************************
+ *******************************************************************************
-*/
+ */
 package com.ibm.icu.text;
 
 /**
@@ -20,6 +20,7 @@ package com.ibm.icu.text;
  * The WILL be shared by multiple instances of CharsetDetector.
  * They encapsulate const charset-specific information.
  */
+@SuppressWarnings("ALL")
 abstract class CharsetRecognizer {
     /**
      * Get the IANA name of this charset.

android/src/main/java/org/ligi/passandroid/App.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid
 
 import android.app.Application
-import android.support.v7.app.AppCompatDelegate
+import androidx.appcompat.app.AppCompatDelegate
 import com.github.salomonbrys.kodein.*
 import com.jakewharton.threetenabp.AndroidThreeTen
 import com.squareup.leakcanary.LeakCanary

android/src/main/java/org/ligi/passandroid/Tracker.java

@@ -1,7 +1,7 @@
 package org.ligi.passandroid;
 
 
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
 
 public interface Tracker {
     void trackException(String s, Throwable e, boolean fatal);

android/src/main/java/org/ligi/passandroid/functions/AddToCalendar.kt

@@ -3,15 +3,15 @@ package org.ligi.passandroid.functions
 import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.provider.CalendarContract
-import android.support.annotation.VisibleForTesting
+import androidx.annotation.VisibleForTesting
-import android.support.design.widget.Snackbar
+import com.google.android.material.snackbar.Snackbar
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.View
 import org.ligi.passandroid.R
 import org.ligi.passandroid.model.pass.Pass
 import org.ligi.passandroid.model.pass.PassImpl
 
-val DEFAULT_EVENT_LENGTH_IN_HOURS = 8L
+const val DEFAULT_EVENT_LENGTH_IN_HOURS = 8L
 
 fun tryAddDateToCalendar(pass: Pass, contextView: View, timeSpan: PassImpl.TimeSpan) {
     if (pass.calendarTimespan == null) {

android/src/main/java/org/ligi/passandroid/functions/Barcode.kt

@@ -33,26 +33,26 @@ fun generateBarCodeBitmap(data: String, type: PassBarCodeFormat): Bitmap? {
 
         // create buffered image to draw to
         // NTFS Bitmap.Config.ALPHA_8 sounds like an awesome idea - been there - done that ..
-        val barcode_image = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565)
+        val barcodeImage = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565)
 
         // iterate through the matrix and draw the pixels to the image
-        for (y in 0..height - 1) {
+        for (y in 0 until height) {
-            for (x in 0..width - 1) {
+            for (x in 0 until width) {
-                barcode_image.setPixel(x, y, if (matrix.get(x, if (is1D) 0 else y)) 0 else 0xFFFFFF)
+                barcodeImage.setPixel(x, y, if (matrix.get(x, if (is1D) 0 else y)) 0 else 0xFFFFFF)
             }
         }
 
-        return barcode_image
+        return barcodeImage
     } catch (e: com.google.zxing.WriterException) {
-        Log.w("could not write image " + e)
+        Log.w("could not write image: $e")
         // TODO check if we should better return some rescue Image here
         return null
     } catch (e: IllegalArgumentException) {
-        Log.w("could not write image " + e)
+        Log.w("could not write image: $e")
         return null
     } catch (e: ArrayIndexOutOfBoundsException) {
         // happens for ITF barcode on certain inputs
-        Log.w("could not write image " + e)
+        Log.w("could not write image: $e")
         return null
     }
 

android/src/main/java/org/ligi/passandroid/functions/CategoryHelper.kt

@@ -1,9 +1,9 @@
 package org.ligi.passandroid.functions
 
 import android.graphics.Color
-import android.support.annotation.ColorInt
+import androidx.annotation.ColorInt
-import android.support.annotation.DrawableRes
+import androidx.annotation.DrawableRes
-import android.support.annotation.StringRes
+import androidx.annotation.StringRes
 import org.ligi.passandroid.R
 import org.ligi.passandroid.model.pass.PassType
 

android/src/main/java/org/ligi/passandroid/functions/InputStreamProvider.kt

@@ -9,7 +9,7 @@ import org.ligi.passandroid.model.InputStreamWithSource
 import java.io.BufferedInputStream
 import java.net.URL
 
-val IPHONE_USER_AGENT = "Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53"
+const val IPHONE_USER_AGENT = "Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53"
 
 fun fromURI(context: Context, uri: Uri): InputStreamWithSource? {
     App.tracker.trackEvent("protocol", "to_inputstream", uri.scheme, null)

android/src/main/java/org/ligi/passandroid/functions/MoveHelper.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.functions
 
 import android.app.Activity
-import android.support.design.widget.Snackbar
+import com.google.android.material.snackbar.Snackbar
 import org.ligi.passandroid.R
 import org.ligi.passandroid.model.PassClassifier
 import org.ligi.passandroid.model.pass.Pass
@@ -9,7 +9,7 @@ import org.ligi.passandroid.model.pass.Pass
 fun moveWithUndoSnackbar(passClassifier: PassClassifier, pass: Pass, topic: String, activity: Activity) {
     val oldTopic = passClassifier.getTopic(pass, "")
 
-    Snackbar.make(activity.window.decorView.findViewById(R.id.fam), "Pass moved to " + topic, Snackbar.LENGTH_LONG)
+    Snackbar.make(activity.window.decorView.findViewById(R.id.fam), "Pass moved to $topic", Snackbar.LENGTH_LONG)
             .setAction(R.string.undo) { passClassifier.moveToTopic(pass, oldTopic) }
             .show()
     passClassifier.moveToTopic(pass, topic)

android/src/main/java/org/ligi/passandroid/functions/PassTemplates.kt

@@ -15,7 +15,7 @@ import java.io.FileNotFoundException
 import java.io.FileOutputStream
 import java.util.*
 
-val APP = "passandroid"
+const val APP = "passandroid"
 
 fun createAndAddEmptyPass(passStore: PassStore, resources: Resources): Pass {
     val pass = createBasePass()

android/src/main/java/org/ligi/passandroid/model/AndroidFileSystemPassStore.kt

@@ -40,7 +40,7 @@ class AndroidFileSystemPassStore(private val context: Context, settings: Setting
 
         if (BuildConfig.DEBUG) {
             val of = com.squareup.moshi.JsonWriter.of(buffer)
-            of.setIndent("  ")
+            of.indent = "  "
             jsonAdapter.toJson(of, pass as PassImpl)
             buffer.close()
             of.close()
@@ -86,7 +86,7 @@ class AndroidFileSystemPassStore(private val context: Context, settings: Setting
             if (dirty) {
                 save(result)
             }
-            passMap.put(id, result)
+            passMap[id] = result
             notifyChange()
         }
 

android/src/main/java/org/ligi/passandroid/model/AndroidSettings.kt

@@ -2,7 +2,7 @@ package org.ligi.passandroid.model
 
 import android.content.Context
 import android.preference.PreferenceManager
-import android.support.v7.app.AppCompatDelegate
+import androidx.appcompat.app.AppCompatDelegate
 import org.ligi.passandroid.R
 import org.ligi.passandroid.R.string.preference_key_autolight
 import org.ligi.passandroid.R.string.preference_key_condensed
@@ -11,12 +11,12 @@ import java.io.File
 
 class AndroidSettings(val context: Context) : Settings {
 
-    internal val sharedPreferences by lazy { PreferenceManager.getDefaultSharedPreferences(context) }
+    private val sharedPreferences by lazy { PreferenceManager.getDefaultSharedPreferences(context) }
 
     override fun getSortOrder(): PassSortOrder {
         val key = context.getString(R.string.preference_key_sort)
         val stringValue = sharedPreferences.getString(key, "0")
-        val id = Integer.valueOf(stringValue)!!
+        val id = Integer.valueOf(stringValue!!)
 
         return PassSortOrder.values().first { it.int == id }
     }

android/src/main/java/org/ligi/passandroid/model/ApplePassbookQuirkCorrector.kt

@@ -24,7 +24,7 @@ class ApplePassbookQuirkCorrector(val tracker: Tracker) {
         tryToFindDate(pass)
     }
 
-    fun tryToFindDate(pass: PassImpl) {
+    private fun tryToFindDate(pass: PassImpl) {
 
         if (pass.calendarTimespan == null) {
             val foundDate = pass.fields.filter { "date" == it.key }.map {
@@ -44,11 +44,11 @@ class ApplePassbookQuirkCorrector(val tracker: Tracker) {
     }
 
     private fun getPassFieldForKey(pass: PassImpl, key: String): PassField? {
-        return pass.fields.firstOrNull() { it.key != null && it.key == key }
+        return pass.fields.firstOrNull { it.key != null && it.key == key }
     }
 
     private fun getPassFieldThatMatchesLabel(pass: PassImpl, matcher: String): PassField? {
-        return pass.fields.firstOrNull() {
+        return pass.fields.firstOrNull {
             val label = it.label
             label != null && label.matches(matcher.toRegex())
         }

android/src/main/java/org/ligi/passandroid/model/AppleStylePassTranslation.java

@@ -1,8 +1,8 @@
 package org.ligi.passandroid.model;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
-import android.support.annotation.VisibleForTesting;
+import androidx.annotation.VisibleForTesting;
 import com.ibm.icu.text.CharsetDetector;
 import com.ibm.icu.text.CharsetMatch;
 import java.io.DataInputStream;
@@ -12,7 +12,6 @@ import java.io.UnsupportedEncodingException;
 import java.util.HashMap;
 import org.ligi.passandroid.App;
 
-@VisibleForTesting
 public class AppleStylePassTranslation extends HashMap<String, String> {
 
     public String translate(String key) {
@@ -63,6 +62,7 @@ public class AppleStylePassTranslation extends HashMap<String, String> {
             if (fileData[0] == (byte) 0xEF && fileData[1] == (byte) 0xBB && fileData[2] == (byte) 0xBF) {
                 final byte[] crop = new byte[fileData.length - 3];
                 System.arraycopy(fileData, 3, crop, 0, crop.length);
+                //noinspection CharsetObjectCanBeUsed
                 return new String(crop, "utf-8");
             }
 

android/src/main/java/org/ligi/passandroid/model/PassClassifier.kt

@@ -14,7 +14,7 @@ open class PassClassifier(val topicByIdMap: MutableMap<String, String>, private
     }
 
     fun moveToTopic(pass: Pass, newTopic: String) {
-        topicByIdMap.put(pass.id, newTopic)
+        topicByIdMap[pass.id] = newTopic
 
         processDataChange()
     }
@@ -24,7 +24,7 @@ open class PassClassifier(val topicByIdMap: MutableMap<String, String>, private
     }
 
     fun getPassListByTopic(topic: String): List<Pass> {
-        return topicByIdMap.filter { it.value.equals(topic) }.map { passStore.getPassbookForId(it.key) }.filterNotNull()
+        return topicByIdMap.filter { it.value == topic }.map { passStore.getPassbookForId(it.key) }.filterNotNull()
     }
 
     fun getTopic(pass: Pass, default: String): String {
@@ -38,7 +38,7 @@ open class PassClassifier(val topicByIdMap: MutableMap<String, String>, private
         }
 
         if (!default.isEmpty()) {
-            topicByIdMap.put(id, default)
+            topicByIdMap[id] = default
             processDataChange()
         }
         return default

android/src/main/java/org/ligi/passandroid/model/PassStoreProjection.kt

@@ -4,7 +4,7 @@ import org.ligi.passandroid.model.comparator.PassSortOrder
 import org.ligi.passandroid.model.pass.Pass
 import java.util.*
 
-class PassStoreProjection(private val passStore: PassStore, val topic: String, private val passSortOrder: PassSortOrder? = null) {
+class PassStoreProjection(private val passStore: PassStore, private val topic: String, private val passSortOrder: PassSortOrder? = null) {
 
     var passList: List<Pass> = ArrayList()
         private set

android/src/main/java/org/ligi/passandroid/model/PastLocationsStore.kt

@@ -1,18 +1,12 @@
 package org.ligi.passandroid.model
 
-import android.annotation.TargetApi
 import android.content.SharedPreferences
-import android.os.Build
 import org.ligi.passandroid.Tracker
 import java.util.*
 
 class PastLocationsStore constructor(private val sharedPreferences: SharedPreferences, private val tracker: Tracker) {
 
     fun putLocation(path: String) {
-        if (Build.VERSION.SDK_INT < 11) {
-            // feature not available for these versions
-            return
-        }
         val pastLocations = sharedPreferences.getStringSet(KEY_PAST_LOCATIONS, HashSet<String>())
 
         if (pastLocations!!.size >= MAX_ELEMENTS) {
@@ -39,17 +33,11 @@ class PastLocationsStore constructor(private val sharedPreferences: SharedPrefer
 
     // feature not available for these versions
     val locations: Set<String>
-        @TargetApi(11)
+        get() = sharedPreferences.getStringSet(KEY_PAST_LOCATIONS, emptySet<String>())
-        get() {
-            if (Build.VERSION.SDK_INT < 11) {
-                return HashSet()
-            }
-            return sharedPreferences.getStringSet(KEY_PAST_LOCATIONS, HashSet<String>())
-        }
 
     companion object {
 
-        val KEY_PAST_LOCATIONS = "past_locations"
+        const val KEY_PAST_LOCATIONS = "past_locations"
-        val MAX_ELEMENTS = 5
+        const val MAX_ELEMENTS = 5
     }
 }

android/src/main/java/org/ligi/passandroid/model/comparator/DirectionAwarePassByTimeComparator.kt

@@ -9,7 +9,7 @@ class DirectionAwarePassByTimeComparator(private val direction: Int) : PassByTim
     }
 
     companion object {
-        val DIRECTION_DESC = -1
+        const val DIRECTION_DESC = -1
-        val DIRECTION_ASC = 1
+        const val DIRECTION_ASC = 1
     }
 }

android/src/main/java/org/ligi/passandroid/model/comparator/PassByTimeComparator.kt

@@ -7,9 +7,9 @@ import java.util.*
 open class PassByTimeComparator : Comparator<Pass> {
 
     override fun compare(lhs: Pass, rhs: Pass): Int {
-        return calculateCompareForNullValues(lhs, rhs, { leftDate: ZonedDateTime, rightDate: ZonedDateTime ->
+        return calculateCompareForNullValues(lhs, rhs) { leftDate: ZonedDateTime, rightDate: ZonedDateTime ->
             return@calculateCompareForNullValues leftDate.compareTo(rightDate)
-        })
+        }
     }
 
     protected fun calculateCompareForNullValues(lhs: Pass, rhs: Pass, foo: (leftDate: ZonedDateTime, rightDate: ZonedDateTime) -> Int): Int {

android/src/main/java/org/ligi/passandroid/model/comparator/PassByTypeFirstAndTimeSecondComparator.kt

@@ -11,10 +11,10 @@ class PassByTypeFirstAndTimeSecondComparator : Comparator<Pass> {
     override fun compare(lhs: Pass, rhs: Pass): Int {
         val compareResult = lhs.type.compareTo(rhs.type)
 
-        if (compareResult != 0) {
+        return if (compareResult != 0) {
-            return compareResult
+            compareResult
         } else {
-            return passByTimeComparator.compare(lhs, rhs)
+            passByTimeComparator.compare(lhs, rhs)
         }
     }
 }

android/src/main/java/org/ligi/passandroid/model/comparator/PassSortOrder.kt

@@ -9,12 +9,10 @@ enum class PassSortOrder constructor(val int: Int) {
     TYPE(1),
     DATE_DIFF(2);
 
-    fun toComparator(): Comparator<Pass> {
+    fun toComparator(): Comparator<Pass> = when (this) {
-        when (this) {
+        TYPE -> PassByTypeFirstAndTimeSecondComparator()
-            TYPE -> return PassByTypeFirstAndTimeSecondComparator()
+        DATE_DESC -> DirectionAwarePassByTimeComparator(DirectionAwarePassByTimeComparator.DIRECTION_DESC)
-            DATE_DESC -> return DirectionAwarePassByTimeComparator(DirectionAwarePassByTimeComparator.DIRECTION_DESC)
+        DATE_DIFF -> PassTemporalDistanceComparator()
-            DATE_DIFF -> return PassTemporalDistanceComparator()
+        DATE_ASC -> DirectionAwarePassByTimeComparator(DirectionAwarePassByTimeComparator.DIRECTION_ASC)
-            DATE_ASC -> return DirectionAwarePassByTimeComparator(DirectionAwarePassByTimeComparator.DIRECTION_ASC)
-        }
     }
 }

android/src/main/java/org/ligi/passandroid/model/comparator/PassTemporalDistanceComparator.kt

@@ -8,11 +8,11 @@ import org.threeten.bp.ZonedDateTime
 class PassTemporalDistanceComparator : PassByTimeComparator() {
 
     override fun compare(lhs: Pass, rhs: Pass): Int {
-        return calculateCompareForNullValues(lhs, rhs, { leftDate: ZonedDateTime, rightDate: ZonedDateTime ->
+        return calculateCompareForNullValues(lhs, rhs) { leftDate: ZonedDateTime, rightDate: ZonedDateTime ->
             val durationLeft = Duration.between(LocalDateTime.now(), leftDate).abs()
             val durationRight = Duration.between(LocalDateTime.now(), rightDate).abs()
 
             return@calculateCompareForNullValues durationLeft.compareTo(durationRight)
-        })
+        }
     }
 }

android/src/main/java/org/ligi/passandroid/model/pass/Pass.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.model.pass
 
 import android.graphics.Bitmap
-import android.support.annotation.StringDef
+import androidx.annotation.StringDef
 import org.ligi.passandroid.model.PassBitmapDefinitions.*
 import org.ligi.passandroid.model.PassStore
 

android/src/main/java/org/ligi/passandroid/model/pass/PassField.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.model.pass
 
 import android.content.res.Resources
-import android.support.annotation.StringRes
+import androidx.annotation.StringRes
 
 class PassField(var key: String?, var label: String?, var value: String?, var hide: Boolean) {
 

android/src/main/java/org/ligi/passandroid/model/pass/PassImpl.kt

@@ -59,13 +59,13 @@ class PassImpl(override val id: String) : Pass {
     override var passIdent: String? = null
 
     override fun getBitmap(passStore: PassStore, @Pass.PassBitmap passBitmap: String): Bitmap? {
-        try {
+        return try {
             val file = File(passStore.getPathForID(id), passBitmap + FILETYPE_IMAGES)
-            return BitmapFactory.decodeStream(FileInputStream(file))
+            BitmapFactory.decodeStream(FileInputStream(file))
         } catch (expectedInSomeCases_willJustReturnNull: FileNotFoundException) {
-            return null
+            null
         } catch (e: OutOfMemoryError) {
-            return null
+            null
         }
 
     }
@@ -84,7 +84,7 @@ class PassImpl(override val id: String) : Pass {
     }
 
     companion object {
-        val FILETYPE_IMAGES = ".png"
+        const val FILETYPE_IMAGES = ".png"
     }
 
 }

android/src/main/java/org/ligi/passandroid/printing/PassPrintDocumentAdapter.kt

@@ -69,7 +69,7 @@ class PassPrintDocumentAdapter(private val context: Context, private val pass: P
         val centerPaint = Paint()
         centerPaint.textAlign = Paint.Align.CENTER
 
-        canvas.drawText(pass.description, canvas.width / 2f, centerPaint.textSize, centerPaint)
+        canvas.drawText(pass.description!!, canvas.width / 2f, centerPaint.textSize, centerPaint)
         var currentBottom = centerPaint.textSize * 3
 
         val barCode = pass.barCode
@@ -83,14 +83,14 @@ class PassPrintDocumentAdapter(private val context: Context, private val pass: P
 
                 val destRect = Rect(0, 0, (bitmap.width * ratio).toInt(), (bitmap.height * ratio).toInt())
 
-                destRect.offset(((canvas.width - destRect.width()) / 2).toInt(), currentBottom.toInt())
+                destRect.offset((canvas.width - destRect.width()) / 2, currentBottom.toInt())
 
                 currentBottom += destRect.bottom
 
                 canvas.drawBitmap(bitmap, srcRect, destRect, centerPaint)
 
                 if (barCode.alternativeText != null) {
-                    canvas.drawText(barCode.alternativeText, destRect.centerX().toFloat(), destRect.bottom.toFloat() + 7 + centerPaint.textSize, centerPaint)
+                    canvas.drawText(barCode.alternativeText!!, destRect.centerX().toFloat(), destRect.bottom.toFloat() + 7 + centerPaint.textSize, centerPaint)
                     currentBottom += 7 + centerPaint.textSize * 2
                 }
             }

android/src/main/java/org/ligi/passandroid/reader/AppleStylePassReader.kt

@@ -32,76 +32,76 @@ object AppleStylePassReader {
 
         val pass = PassImpl(passFile.name)
 
-        var pass_json: JSONObject? = null
+        var passJSON: JSONObject? = null
 
-        val localized_path = findLocalizedPath(passFile, language)
+        val localizedPath = findLocalizedPath(passFile, language)
 
-        if (localized_path != null) {
+        if (localizedPath != null) {
-            val file = File(localized_path, "pass.strings")
+            val file = File(localizedPath, "pass.strings")
             translation.loadFromFile(file)
         }
 
-        copyBitmapFile(passFile, localized_path, PassBitmapDefinitions.BITMAP_ICON)
+        copyBitmapFile(passFile, localizedPath, PassBitmapDefinitions.BITMAP_ICON)
-        copyBitmapFile(passFile, localized_path, PassBitmapDefinitions.BITMAP_LOGO)
+        copyBitmapFile(passFile, localizedPath, PassBitmapDefinitions.BITMAP_LOGO)
-        copyBitmapFile(passFile, localized_path, PassBitmapDefinitions.BITMAP_STRIP)
+        copyBitmapFile(passFile, localizedPath, PassBitmapDefinitions.BITMAP_STRIP)
-        copyBitmapFile(passFile, localized_path, PassBitmapDefinitions.BITMAP_THUMBNAIL)
+        copyBitmapFile(passFile, localizedPath, PassBitmapDefinitions.BITMAP_THUMBNAIL)
-        copyBitmapFile(passFile, localized_path, PassBitmapDefinitions.BITMAP_FOOTER)
+        copyBitmapFile(passFile, localizedPath, PassBitmapDefinitions.BITMAP_FOOTER)
 
         val file = File(passFile, "pass.json")
 
         try {
             val plainJsonString = AppleStylePassTranslation.readFileAsStringGuessEncoding(file)
-            pass_json = readJSONSafely(plainJsonString)
+            passJSON = readJSONSafely(plainJsonString)
         } catch (e: Exception) {
-            Log.i("PassParse Exception " + e)
+            Log.i("PassParse Exception: $e")
         }
 
-        if (pass_json == null) {
+        if (passJSON == null) {
             // I had got a strange passbook with UCS-2 which could not be parsed before
             // was searching for a auto-detection, but could not find one with support for this encoding
             // and the right license
 
             for (charset in Charset.availableCharsets().values) {
                 try {
-                    val json_str = file.bufferedReader(charset).readText()
+                    val json = file.bufferedReader(charset).readText()
-                    pass_json = readJSONSafely(json_str)
+                    passJSON = readJSONSafely(json)
                 } catch (ignored: Exception) {
                     // we try with next charset
                 }
 
-                if (pass_json != null) {
+                if (passJSON != null) {
                     break
                 }
             }
         }
 
-        if (pass_json == null) {
+        if (passJSON == null) {
             Log.w("could not load pass.json from passcode ")
             App.tracker.trackEvent("problem_event", "pass", "without_pass_json", null)
             return null
         }
 
         try {
-            val barcode_json = pass_json.getBarcodeJson()
+            val barcodeJSON = passJSON.getBarcodeJson()
-            if (barcode_json != null) {
+            if (barcodeJSON != null) {
-                val barcodeFormatString = barcode_json.getString("format")
+                val barcodeFormatString = barcodeJSON.getString("format")
 
                 App.tracker.trackEvent("measure_event", "barcode_format", barcodeFormatString, 0L)
                 val barcodeFormat = BarCode.getFormatFromString(barcodeFormatString)
-                val barCode = BarCode(barcodeFormat, barcode_json.getString("message"))
+                val barCode = BarCode(barcodeFormat, barcodeJSON.getString("message"))
                 pass.barCode = barCode
 
-                if (barcode_json.has("altText")) {
+                if (barcodeJSON.has("altText")) {
-                    pass.barCode!!.alternativeText = barcode_json.getString("altText")
+                    pass.barCode!!.alternativeText = barcodeJSON.getString("altText")
                 }
             }
             // TODO should check a bit more with barcode here - this can be dangerous
         } catch (ignored: Exception) {
         }
 
-        if (pass_json.has("relevantDate")) {
+        if (passJSON.has("relevantDate")) {
             try {
-                pass.calendarTimespan = PassImpl.TimeSpan(from = ZonedDateTime.parse(pass_json.getString("relevantDate")))
+                pass.calendarTimespan = PassImpl.TimeSpan(from = ZonedDateTime.parse(passJSON.getString("relevantDate")))
             } catch (e: JSONException) {
                 // be robust when it comes to bad dates - had a RL crash with "2013-12-25T00:00-57:00" here
                 // OK then we just have no date here
@@ -112,9 +112,9 @@ object AppleStylePassReader {
 
         }
 
-        if (pass_json.has("expirationDate")) {
+        if (passJSON.has("expirationDate")) {
             try {
-                pass.validTimespans = listOf(PassImpl.TimeSpan(to = ZonedDateTime.parse(pass_json.getString("expirationDate"))))
+                pass.validTimespans = listOf(PassImpl.TimeSpan(to = ZonedDateTime.parse(passJSON.getString("expirationDate"))))
             } catch (e: JSONException) {
                 // be robust when it comes to bad dates - had a RL crash with "2013-12-25T00:00-57:00" here
                 // OK then we just have no date here
@@ -125,17 +125,17 @@ object AppleStylePassReader {
 
         }
 
-        pass.serial = readJsonSafeAsOptional(pass_json, "serialNumber")
+        pass.serial = readJsonSafeAsOptional(passJSON, "serialNumber")
-        pass.authToken = readJsonSafeAsOptional(pass_json, "authenticationToken")
+        pass.authToken = readJsonSafeAsOptional(passJSON, "authenticationToken")
-        pass.webServiceURL = readJsonSafeAsOptional(pass_json, "webServiceURL")
+        pass.webServiceURL = readJsonSafeAsOptional(passJSON, "webServiceURL")
-        pass.passIdent = readJsonSafeAsOptional(pass_json, "passTypeIdentifier")
+        pass.passIdent = readJsonSafeAsOptional(passJSON, "passTypeIdentifier")
 
         val locations = ArrayList<PassLocation>()
         try {
 
-            val locations_json = pass_json.getJSONArray("locations")
+            val locationsJSON = passJSON.getJSONArray("locations")
-            for (i in 0..locations_json.length() - 1) {
+            for (i in 0 until locationsJSON.length()) {
-                val obj = locations_json.getJSONObject(i)
+                val obj = locationsJSON.getJSONObject(i)
 
                 val location = PassLocation()
                 location.lat = obj.getDouble("latitude")
@@ -153,13 +153,13 @@ object AppleStylePassReader {
 
         pass.locations = locations
 
-        readJsonSafe(pass_json, "backgroundColor", object : JsonStringReadCallback {
+        readJsonSafe(passJSON, "backgroundColor", object : JsonStringReadCallback {
             override fun onString(string: String) {
                 pass.accentColor = string.parseColor(Color.BLACK)
             }
         })
 
-        readJsonSafe(pass_json, "description", object : JsonStringReadCallback {
+        readJsonSafe(passJSON, "description", object : JsonStringReadCallback {
             override fun onString(string: String) {
                 pass.description = translation.translate(string)
             }
@@ -169,22 +169,22 @@ object AppleStylePassReader {
         // try to find in a predefined set of tickets
 
         PassDefinitions.TYPE_TO_NAME.forEach {
-            if (pass_json!!.has(it.value)) {
+            if (passJSON.has(it.value)) {
                 pass.type = it.key
             }
         }
 
         try {
             val type = PassDefinitions.TYPE_TO_NAME[pass.type]
-            val type_json = pass_json.getJSONObject(type)
+            val typeJSON = passJSON.getJSONObject(type)
-            if (type_json != null) {
+            if (typeJSON != null) {
                 val fieldList: ArrayList<PassField> = ArrayList()
 
-                addFields(fieldList, type_json, "primaryFields", translation)
+                addFields(fieldList, typeJSON, "primaryFields", translation)
-                addFields(fieldList, type_json, "headerFields", translation)
+                addFields(fieldList, typeJSON, "headerFields", translation)
-                addFields(fieldList, type_json, "secondaryFields", translation)
+                addFields(fieldList, typeJSON, "secondaryFields", translation)
-                addFields(fieldList, type_json, "auxiliaryFields", translation)
+                addFields(fieldList, typeJSON, "auxiliaryFields", translation)
-                addFields(fieldList, type_json, "backFields", translation, hide = true)
+                addFields(fieldList, typeJSON, "backFields", translation, hide = true)
 
                 fieldList.add(PassField("", context.getString(R.string.type), context.getString(getHumanCategoryString(pass.type)), false))
                 pass.fields = fieldList
@@ -195,7 +195,7 @@ object AppleStylePassReader {
 
 
         try {
-            pass.creator = pass_json.getString("organizationName")
+            pass.creator = passJSON.getString("organizationName")
             App.tracker.trackEvent("measure_event", "organisation_parse", pass.creator, 1L)
         } catch (ignored: JSONException) {
             // ok - we have no organisation - big deal ..-)
@@ -220,7 +220,7 @@ object AppleStylePassReader {
     private fun addFields(list: ArrayList<PassField>, type_json: JSONObject, fieldsName: String, translation: AppleStylePassTranslation, hide: Boolean = false) {
         try {
             val jsonArray = type_json.getJSONArray(fieldsName)
-            for (i in 0..jsonArray.length() - 1) {
+            for (i in 0 until jsonArray.length()) {
                 try {
                     val jsonObject = jsonArray.getJSONObject(i)
                     val field = PassField(key = getField(jsonObject, "key", translation),
@@ -230,19 +230,18 @@ object AppleStylePassReader {
                     list.add(field)
 
                 } catch (e: JSONException) {
-                    Log.w("could not process PassField from JSON for $fieldsName cause:$e")
+                    Log.w("could not process PassField from JSON for $fieldsName cause: $e")
                 }
 
             }
         } catch (e: JSONException) {
-            Log.w("could not process PassFields $fieldsName from JSON$e")
+            Log.w("could not process PassFields $fieldsName from JSON: $e")
         }
 
     }
 
     private fun findLocalizedPath(path: File, language: String): String? {
-
+        val localized = File(path, "$language.lproj")
-        val localized = File(path, language + ".lproj")
 
         if (localized.exists() && localized.isDirectory) {
             App.tracker.trackEvent("measure_event", "pass", language + "_native_lproj", null)
@@ -282,7 +281,6 @@ object AppleStylePassReader {
             } catch (e: JSONException) {
                 // some passes just do not have the field
             }
-
         }
     }
 
@@ -294,7 +292,6 @@ object AppleStylePassReader {
             } catch (e: Exception) {
                 e.printStackTrace()
             }
-
         }
     }
 
@@ -329,6 +326,4 @@ object AppleStylePassReader {
         }
         return null
     }
-
-
 }

android/src/main/java/org/ligi/passandroid/reader/PassReader.kt

@@ -21,47 +21,47 @@ object PassReader {
 
         try {
             val plainJsonString = file.bufferedReader().readText()
-            val pass_json = readJSONSafely(plainJsonString)!!
+            val passJSON = readJSONSafely(plainJsonString)!!
 
-            if (pass_json.has("what")) {
+            if (passJSON.has("what")) {
-                val what_json = pass_json.getJSONObject("what")
+                val whatJSON = passJSON.getJSONObject("what")
-                pass.description = what_json.getString("description")
+                pass.description = whatJSON.getString("description")
             }
 
-            if (pass_json.has("meta")) {
+            if (passJSON.has("meta")) {
-                val meta_json = pass_json.getJSONObject("meta")
+                val metaJSON = passJSON.getJSONObject("meta")
-                pass.type = PassDefinitions.NAME_TO_TYPE[meta_json.getString("type")] ?: PassType.GENERIC
+                pass.type = PassDefinitions.NAME_TO_TYPE[metaJSON.getString("type")] ?: PassType.GENERIC
-                pass.creator = meta_json.getString("organisation")
+                pass.creator = metaJSON.getString("organisation")
-                pass.app = meta_json.getString("app")
+                pass.app = metaJSON.getString("app")
             }
 
-            if (pass_json.has("ui")) {
+            if (passJSON.has("ui")) {
-                val ui_json = pass_json.getJSONObject("ui")
+                val uiJSON = passJSON.getJSONObject("ui")
-                pass.accentColor = Color.parseColor(ui_json.getString("bgColor"))
+                pass.accentColor = Color.parseColor(uiJSON.getString("bgColor"))
             }
 
-            if (pass_json.has("barcode")) {
+            if (passJSON.has("barcode")) {
-                val barcode_json = pass_json.getJSONObject("barcode")
+                val barcodeJSON = passJSON.getJSONObject("barcode")
-                val barcodeFormatString = barcode_json.getString("type")
+                val barcodeFormatString = barcodeJSON.getString("type")
 
                 val barcodeFormat = BarCode.getFormatFromString(barcodeFormatString)
-                val barCode = BarCode(barcodeFormat, barcode_json.getString("message"))
+                val barCode = BarCode(barcodeFormat, barcodeJSON.getString("message"))
                 pass.barCode = barCode
 
-                if (barcode_json.has("altText")) {
+                if (barcodeJSON.has("altText")) {
-                    barCode.alternativeText = barcode_json.getString("altText")
+                    barCode.alternativeText = barcodeJSON.getString("altText")
                 }
             }
 
-            if (pass_json.has("when")) {
+            if (passJSON.has("when")) {
-                val dateTime = pass_json.getJSONObject("when").getString("dateTime")
+                val dateTime = passJSON.getJSONObject("when").getString("dateTime")
 
                 pass.calendarTimespan = PassImpl.TimeSpan()
                 pass.calendarTimespan = PassImpl.TimeSpan(from = ZonedDateTime.parse(dateTime))
             }
 
         } catch (e: Exception) {
-            Log.i("PassParse Exception " + e)
+            Log.i("PassParse Exception: $e")
         }
 
         return pass

android/src/main/java/org/ligi/passandroid/ui/BarcodeUIController.kt

@@ -4,14 +4,15 @@ import android.app.Activity
 import android.view.View
 import android.view.View.*
 import android.view.ViewGroup
+import android.widget.ImageView
 import android.widget.LinearLayout
 import kotlinx.android.synthetic.main.barcode.view.*
 import org.ligi.kaxt.getSmallestSide
 import org.ligi.passandroid.model.pass.BarCode
 
-internal class BarcodeUIController(val rootView: View, private val barCode: BarCode?, activity: Activity, private val passViewHelper: PassViewHelper) {
+internal class BarcodeUIController(private val rootView: View, private val barCode: BarCode?, activity: Activity, private val passViewHelper: PassViewHelper) {
 
-    fun getBarcodeView() = rootView.barcode_img
+    fun getBarcodeView(): ImageView = rootView.barcode_img
 
     private var currentBarcodeWidth: Int = 0
 

android/src/main/java/org/ligi/passandroid/ui/ExtractURLAsIphoneActivity.kt

@@ -22,11 +22,13 @@ class ExtractURLAsIphoneActivity : PassAndroidActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        if (intent?.data != null) {
             progressDialog.show()
-        tracker.trackEvent("quirk_fix", "unpack_attempt", intent.data.host, null)
+            tracker.trackEvent("quirk_fix", "unpack_attempt", intent?.data?.host, null)
 
             DownloadExtractAndStartImportTask().execute()
         }
+    }
 
     private inner class DownloadExtractAndStartImportTask : AsyncTask<Void, Void, String>() {
 
@@ -34,7 +36,7 @@ class ExtractURLAsIphoneActivity : PassAndroidActivity() {
 
             val client = OkHttpClient()
             try {
-                val requestBuilder = Request.Builder().url(URI(intent.data.toString()).toURL())
+                val requestBuilder = Request.Builder().url(URI(intent?.data.toString()).toURL())
                 requestBuilder.header("User-Agent", IPHONE_USER_AGENT)
 
                 val body = client.newCall(requestBuilder.build()).execute().body()
@@ -46,7 +48,7 @@ class ExtractURLAsIphoneActivity : PassAndroidActivity() {
                     val url = extractURL(bodyString) ?: return null
 
                     if (!url.startsWith("http")) {
-                        return intent.data.scheme + "://" + intent.data.host + "/" + url
+                        return intent?.data?.scheme + "://" + intent?.data?.host + "/" + url
                     }
 
                     return url
@@ -79,7 +81,7 @@ class ExtractURLAsIphoneActivity : PassAndroidActivity() {
                 return
             }
 
-            tracker.trackEvent("quirk_fix", "unpack_success", intent.data.host, null)
+            tracker.trackEvent("quirk_fix", "unpack_success", intent?.data?.host, null)
 
             val intent = Intent(this@ExtractURLAsIphoneActivity, PassImportActivity::class.java)
             intent.data = Uri.parse(s)

android/src/main/java/org/ligi/passandroid/ui/FullscreenBarcodeActivity.kt

@@ -2,6 +2,7 @@ package org.ligi.passandroid.ui
 
 import android.content.pm.ActivityInfo
 import android.content.res.Configuration
+import android.os.Build
 import android.os.Bundle
 import android.view.View
 import android.view.WindowManager
@@ -15,12 +16,19 @@ class FullscreenBarcodeActivity : PassViewActivityBase() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.fullscreen_image)
+
+        if (Build.VERSION.SDK_INT >= 27) {
+            setShowWhenLocked(true)
+            setTurnScreenOn(true)
+        } else {
+            this.window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
+        }
     }
 
     override fun onResume() {
         super.onResume()
 
-        if (currentPass == null || currentPass.barCode == null) {
+        if (currentPass.barCode == null) {
             Log.w("FullscreenBarcodeActivity in bad state")
             finish() // this should never happen, but better safe than sorry
             return
@@ -47,7 +55,6 @@ class FullscreenBarcodeActivity : PassViewActivityBase() {
      * ( reverse orientation / sensor is the problem here ..)
      */
     private fun setBestFittingOrientationForBarCode() {
-
         if (currentPass.barCode!!.format!!.isQuadratic()) {
             when (requestedOrientation) {
 
@@ -72,9 +79,4 @@ class FullscreenBarcodeActivity : PassViewActivityBase() {
 
         }
     }
-
-    override fun onAttachedToWindow() {
-        window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
-    }
-
 }

android/src/main/java/org/ligi/passandroid/ui/HelpActivity.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui
 
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.text.Editable
 import android.text.Html
 import android.text.method.LinkMovementMethod

android/src/main/java/org/ligi/passandroid/ui/MoveToNewTopicUI.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui
 
 import android.app.Activity
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.ViewGroup
 import android.widget.Button
 import android.widget.EditText
@@ -26,9 +26,10 @@ internal class MoveToNewTopicUI(private val context: Activity, private val passS
             dialog.dismiss()
         }
 
-        val newTopicEditText = dialog.findViewById(R.id.new_topic_edit) as EditText
+        val newTopicEditText = dialog.findViewById<EditText>(R.id.new_topic_edit)
-        val suggestionButtonContainer= dialog.findViewById(R.id.topic_suggestions_button_container) as ViewGroup
+        val suggestionButtonContainer = dialog.findViewById<ViewGroup>(R.id.topic_suggestions_button_container)
 
+        if (newTopicEditText != null) {
             // we need to do this here so the dialog does not get dismissed
             dialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
                 if (newTopicEditText.text.toString().isEmpty()) {
@@ -38,17 +39,18 @@ internal class MoveToNewTopicUI(private val context: Activity, private val passS
                     move(newTopicEditText.text.toString())
                 }
             }
+        }
 
         val oldTopic = passStore.classifier.getTopic(pass, "")
 
         val suggestionTopicStringIds = intArrayOf(R.string.topic_trash, R.string.topic_archive, R.string.topic_new)
 
-        suggestionTopicStringIds.map { context.getString(it) }.forEach {
+        suggestionTopicStringIds.map { context.getString(it) }.forEach { topic ->
-            if (it != oldTopic) {
+            if (topic != oldTopic) {
                 val button = Button(context)
-                button.text = it
+                button.text = topic
-                suggestionButtonContainer.addView(button)
+                suggestionButtonContainer?.addView(button)
-                button.setOnClickListener { _ -> move(it) }
+                button.setOnClickListener { move(topic) }
             }
         }
     }

android/src/main/java/org/ligi/passandroid/ui/MyShyFABBehavior.java

@@ -2,32 +2,36 @@ package org.ligi.passandroid.ui;
 
 import android.content.Context;
 import android.content.res.TypedArray;
-import android.support.design.widget.AppBarLayout;
+import com.google.android.material.appbar.AppBarLayout;
-import android.support.design.widget.CoordinatorLayout;
+
-import android.support.design.widget.Snackbar;
+import androidx.annotation.NonNull;
-import android.support.v4.view.ViewCompat;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import com.google.android.material.snackbar.Snackbar;
 import android.util.AttributeSet;
 import android.view.View;
 import net.i2p.android.ext.floatingactionbutton.FloatingActionsMenu;
 import org.ligi.passandroid.R;
 
+@SuppressWarnings("WeakerAccess")
 public class MyShyFABBehavior extends CoordinatorLayout.Behavior<FloatingActionsMenu> {
 
-    public MyShyFABBehavior() {
+    public MyShyFABBehavior() {}
-    }
 
     public MyShyFABBehavior(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
 
-
     @Override
-    public boolean layoutDependsOn(CoordinatorLayout parent, FloatingActionsMenu child, View dependency) {
+    public boolean layoutDependsOn(@NonNull CoordinatorLayout parent,
+                                   @NonNull FloatingActionsMenu child,
+                                   @NonNull View dependency) {
         return dependency instanceof Snackbar.SnackbarLayout || dependency instanceof AppBarLayout;
     }
 
     @Override
-    public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionsMenu child, View dependency) {
+    public boolean onDependentViewChanged(@NonNull CoordinatorLayout parent,
+                                          @NonNull FloatingActionsMenu child,
+                                          @NonNull View dependency) {
         if (dependency instanceof Snackbar.SnackbarLayout) {
             updateFabTranslationForSnackbar(child, dependency);
         }
@@ -40,23 +44,24 @@ public class MyShyFABBehavior extends CoordinatorLayout.Behavior<FloatingActions
             } else {
                 distanceToScroll = (int) (child.getContext().getResources().getDimension(R.dimen.fab_size_normal) + 2 * fabBottomMargin);
             }
-            final float ratio = ViewCompat.getY(dependency) / getToolbarHeight(dependency.getContext());
+            final float ratio = dependency.getY() / getToolbarHeight(dependency.getContext());
 
-            ViewCompat.setTranslationY(child, -distanceToScroll * ratio);
+            child.setTranslationY(-distanceToScroll * ratio);
         }
         return false;
     }
 
     @Override
-    public void onDependentViewRemoved(final CoordinatorLayout parent, final FloatingActionsMenu child, final View dependency) {
+    public void onDependentViewRemoved(@NonNull final CoordinatorLayout parent,
+                                       @NonNull final FloatingActionsMenu child,
+                                       @NonNull final View dependency) {
         super.onDependentViewRemoved(parent, child, dependency);
         onDependentViewChanged(parent,child,dependency);
     }
 
     private void updateFabTranslationForSnackbar(FloatingActionsMenu child, View dependency) {
-        final float translationY = ViewCompat.getTranslationY(dependency) - dependency.getHeight();
+        final float translationY = dependency.getTranslationY() - dependency.getHeight();
-        final float translationYClipped = Math.min(0, translationY);
+        child.setTranslationY(Math.min(0, translationY));
-        ViewCompat.setTranslationY(child, translationYClipped);
     }
 
     private int getToolbarHeight(Context context) {

android/src/main/java/org/ligi/passandroid/ui/NavigateToLocationsDialog.kt

@@ -4,7 +4,7 @@ import android.app.Activity
 import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.net.Uri
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import org.ligi.passandroid.R
 import org.ligi.passandroid.model.pass.Pass
 import org.ligi.passandroid.model.pass.PassLocation
@@ -15,12 +15,13 @@ import java.net.URLEncoder
 fun Activity.showNavigateToLocationsDialog(pass: Pass, finishOnDone: Boolean) {
     val locations = pass.locations
 
-    if (locations.isEmpty()) {
+    when {
-        done(this, finishOnDone)
+        locations.isEmpty() -> done(this, finishOnDone)
-    } else if (locations.size == 1) {
+        locations.size == 1 -> {
             startIntentForLocation(this, locations.first(), pass)
             done(this, finishOnDone)
-    } else if (locations.size > 1) {
+        }
+        locations.size > 1 -> {
             val locationDescriptions = arrayOfNulls<String>(locations.size)
 
             var i = 0
@@ -33,7 +34,7 @@ fun Activity.showNavigateToLocationsDialog(pass: Pass, finishOnDone: Boolean) {
                         done(this, finishOnDone)
                     }
                     .show()
-
+        }
     }
 }
 

android/src/main/java/org/ligi/passandroid/ui/PassAdapter.kt

@@ -1,9 +1,9 @@
 package org.ligi.passandroid.ui
 
-import android.support.design.widget.Snackbar
+import com.google.android.material.snackbar.Snackbar
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
-import android.support.v7.widget.CardView
+import androidx.cardview.widget.CardView
-import android.support.v7.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import com.github.salomonbrys.kodein.instance
@@ -26,12 +26,11 @@ class PassAdapter(private val passListActivity: AppCompatActivity, private val p
         val inflater = LayoutInflater.from(viewGroup.context)
 
         val res = inflater.inflate(R.layout.pass_list_item, viewGroup, false) as CardView
-        if (settings.isCondensedModeEnabled()) {
+        return if (settings.isCondensedModeEnabled()) {
-            return CondensedPassViewHolder(res)
+            CondensedPassViewHolder(res)
         } else {
-            return VerbosePassViewHolder(res)
+            VerbosePassViewHolder(res)
         }
-
     }
 
     override fun onBindViewHolder(viewHolder: PassViewHolder, position: Int) {

android/src/main/java/org/ligi/passandroid/ui/PassAndroidActivity.kt

@@ -1,9 +1,8 @@
 package org.ligi.passandroid.ui
 
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import com.github.salomonbrys.kodein.instance
 import org.greenrobot.eventbus.EventBus
-import org.ligi.kaxt.recreateWhenPossible
 import org.ligi.passandroid.App
 import org.ligi.passandroid.Tracker
 import org.ligi.passandroid.model.PassStore
@@ -22,7 +21,7 @@ open class PassAndroidActivity : AppCompatActivity() {
         super.onResume()
 
         if (lastSetNightMode != null && lastSetNightMode != settings.getNightMode()) {
-            recreateWhenPossible()
+            recreate()
         }
         lastSetNightMode = settings.getNightMode()
     }

android/src/main/java/org/ligi/passandroid/ui/PassEditActivity.kt

@@ -3,11 +3,12 @@ package org.ligi.passandroid.ui
 import android.Manifest
 import android.content.Intent
 import android.os.Bundle
-import android.support.annotation.IdRes
+import androidx.annotation.IdRes
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.view.MenuItem
 import android.view.View
+import android.widget.Button
 import android.widget.ImageView
 import com.github.salomonbrys.kodein.instance
 import kotlinx.android.synthetic.main.edit.*
@@ -58,7 +59,7 @@ class PassEditActivity : AppCompatActivity() {
                 when (i) {
                     0 -> showCategoryPickDialog(this@PassEditActivity, currentPass, bus)
                     1 -> showColorPickDialog(this@PassEditActivity, currentPass, bus)
-                    2 -> PassEditActivityPermissionsDispatcher.pickImageWithCheck(this@PassEditActivity, ImageEditHelper.REQ_CODE_PICK_ICON)
+                    2 -> pickImageWithPermissionCheck(ImageEditHelper.REQ_CODE_PICK_ICON)
                 }
             }.show()
         }
@@ -103,7 +104,7 @@ class PassEditActivity : AppCompatActivity() {
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-        PassEditActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults)
+        onRequestPermissionsResult(requestCode, grantResults)
     }
 
     private fun refresh(pass: Pass) {
@@ -126,14 +127,14 @@ class PassEditActivity : AppCompatActivity() {
 
         val bitmap = currentPass.getBitmap(passStore, imageString)
 
-        val addButton = findViewById(add_logo)!!
+        val addButton = findViewById<Button>(add_logo)!!
         addButton.visibility = if (bitmap == null) View.VISIBLE else View.GONE
 
         val listener = View.OnClickListener {
-            PassEditActivityPermissionsDispatcher.pickImageWithCheck(this@PassEditActivity, requestCode)
+            pickImageWithPermissionCheck(requestCode)
         }
 
-        val logoImage = findViewById(logo_img) as ImageView
+        val logoImage = findViewById<ImageView>(logo_img)
         passViewHelper.setBitmapSafe(logoImage, bitmap)
         logoImage.setOnClickListener(listener)
         addButton.setOnClickListener(listener)
@@ -159,7 +160,5 @@ class PassEditActivity : AppCompatActivity() {
             true
         }
         else -> super.onOptionsItemSelected(item)
-
     }
-
 }

android/src/main/java/org/ligi/passandroid/ui/PassExportTaskAndShare.kt

@@ -4,35 +4,35 @@ import android.app.Activity
 import android.app.ProgressDialog
 import android.content.Intent
 import android.os.Handler
-import android.support.annotation.UiThread
+import androidx.annotation.UiThread
-import android.support.v4.content.FileProvider
+import androidx.core.content.FileProvider
 import android.widget.Toast
 import org.ligi.passandroid.App
 import org.ligi.passandroid.R
 import java.io.File
 
-internal open class PassExportTaskAndShare(protected val activity: Activity, val inputPath: File)  {
+internal open class PassExportTaskAndShare(protected val activity: Activity, private val inputPath: File)  {
 
     @UiThread
     fun execute() {
         val file = File(activity.filesDir, "share/share.espass") // important - the FileProvider must be configured for this path
         val passExporter = PassExporter(inputPath, file)
-        val progress_dialog = ProgressDialog(activity)
+        val progressDialog = ProgressDialog(activity)
-        progress_dialog.setTitle(R.string.preparing_pass)
+        progressDialog.setTitle(R.string.preparing_pass)
-        progress_dialog.setMessage(activity.getString(R.string.please_wait))
+        progressDialog.setMessage(activity.getString(R.string.please_wait))
-        progress_dialog.show()
+        progressDialog.show()
 
         val handler = Handler()
         Thread(Runnable {
             passExporter.export()
             handler.post {
-                if (!activity.isFinishing && progress_dialog.isShowing) {
+                if (!activity.isFinishing && progressDialog.isShowing) {
-                    progress_dialog.dismiss()
+                    progressDialog.dismiss()
                 }
 
                 if (passExporter.exception != null) {
-                    App.tracker.trackException("passExporterException", passExporter.exception, false)
+                    App.tracker.trackException("passExporterException", passExporter.exception!!, false)
-                    Toast.makeText(activity, "could not export pass " + passExporter.exception, Toast.LENGTH_LONG).show()
+                    Toast.makeText(activity, "could not export pass: " + passExporter.exception, Toast.LENGTH_LONG).show()
                 } else {
                     val uriForFile = FileProvider.getUriForFile(activity, activity.getString(R.string.authority_fileprovider), file)
                     val it = Intent(Intent.ACTION_SEND)

android/src/main/java/org/ligi/passandroid/ui/PassImportActivity.kt

@@ -2,9 +2,8 @@ package org.ligi.passandroid.ui
 
 import android.Manifest
 import android.app.ProgressDialog
-import android.content.DialogInterface
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import com.github.salomonbrys.kodein.instance
 import org.ligi.kaxt.dismissIfShowing
 import org.ligi.kaxt.startActivityFromClass
@@ -44,22 +43,21 @@ class PassImportActivity : AppCompatActivity() {
 
         progressDialog.show()
 
-        doImport(false)
+        doImportWithPermissionCheck(false)
-
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-        PassImportActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults)
+        onRequestPermissionsResult(requestCode, grantResults)
     }
 
     @NeedsPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
     fun doImport(withPermission: Boolean) {
-        Thread({
+        Thread {
             try {
-                val fromURI = fromURI(this, intent.data)
+                val fromURI = fromURI(this, intent!!.data!!)
 
-                runOnUiThread({
+                runOnUiThread {
                     progressDialog.dismissIfShowing()
 
                     if (fromURI == null) {
@@ -87,25 +85,20 @@ class PassImportActivity : AppCompatActivity() {
                             }
                         }
                     }
-                })
+                }
             } catch (e: Exception) {
                 if (e.message?.contains("Permission") == true && !withPermission) {
-                    PassImportActivityPermissionsDispatcher.doImportWithCheck(this@PassImportActivity, true)
+                    doImportWithPermissionCheck(true)
                 } else {
                     tracker.trackException("Error in import", e, false)
                 }
-
             }
-
+        }.start()
-
-        }).start()
     }
 
-
     @OnPermissionDenied(Manifest.permission.READ_EXTERNAL_STORAGE)
     fun showDeniedDialog() {
         progressDialog.dismissIfShowing()
-        alert(R.string.error_no_permission_msg, R.string.error_no_permission_title, onOKListener = DialogInterface.OnClickListener { _, _ -> finish() })
+        alert(R.string.error_no_permission_msg, R.string.error_no_permission_title, onOK = { finish() })
     }
-
 }

android/src/main/java/org/ligi/passandroid/ui/PassListActivity.kt

@@ -10,11 +10,11 @@ import android.content.Intent
 import android.content.res.Configuration
 import android.os.Build
 import android.os.Bundle
-import android.support.design.widget.Snackbar
+import com.google.android.material.snackbar.Snackbar
-import android.support.v4.view.GravityCompat
+import androidx.core.view.GravityCompat
-import android.support.v4.view.ViewPager
+import androidx.viewpager.widget.ViewPager
-import android.support.v7.app.ActionBarDrawerToggle
+import androidx.appcompat.app.ActionBarDrawerToggle
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
@@ -99,7 +99,7 @@ class PassListActivity : PassAndroidActivity() {
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-        PassListActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults)
+        onRequestPermissionsResult(requestCode, grantResults)
     }
 
     @TargetApi(VERSION_STARTING_TO_SUPPORT_STORAGE_FRAMEWORK)
@@ -162,7 +162,7 @@ class PassListActivity : PassAndroidActivity() {
 
             override fun onPageSelected(position: Int) {
                 State.lastSelectedTab = position
-                supportInvalidateOptionsMenu()
+                invalidateOptionsMenu()
             }
 
             override fun onPageScrollStateChanged(state: Int) {
@@ -189,7 +189,7 @@ class PassListActivity : PassAndroidActivity() {
         }
 
         fab_action_scan.setOnClickListener {
-            PassListActivityPermissionsDispatcher.scanWithCheck(this)
+            scanWithPermissionCheck()
             fam.collapse()
         }
 
@@ -214,7 +214,11 @@ class PassListActivity : PassAndroidActivity() {
         }
 
         R.id.menu_emptytrash -> {
-            AlertDialog.Builder(this).setMessage(getString(R.string.empty_trash_dialog_message)).setIcon(R.drawable.ic_alert_warning).setTitle(getString(R.string.empty_trash_dialog_title)).setPositiveButton(R.string.emtytrash_label) { dialog, which ->
+            AlertDialog.Builder(this)
+                    .setMessage(getString(R.string.empty_trash_dialog_message))
+                    .setIcon(R.drawable.ic_alert_warning)
+                    .setTitle(getString(R.string.empty_trash_dialog_title))
+                    .setPositiveButton(R.string.emtytrash_label) { _, _ ->
                         val passStoreProjection = PassStoreProjection(passStore,
                                 getString(R.string.topic_trash),
                                 null)
@@ -225,7 +229,6 @@ class PassListActivity : PassAndroidActivity() {
             }.setNegativeButton(android.R.string.cancel, null).show()
             true
         }
-
         else -> drawerToggle.onOptionsItemSelected(item) || super.onOptionsItemSelected(item)
     }
 
@@ -269,7 +272,7 @@ class PassListActivity : PassAndroidActivity() {
 
         setupWithViewPagerIfNeeded()
 
-        supportInvalidateOptionsMenu()
+        invalidateOptionsMenu()
 
         val empty = passStore.classifier.topicByIdMap.isEmpty()
         emptyView.visibility = if (empty) View.VISIBLE else View.GONE
@@ -284,7 +287,6 @@ class PassListActivity : PassAndroidActivity() {
     }
 
     private fun areTabLayoutAndViewPagerInSync(): Boolean {
-
         if (adapter.count != tab_layout.tabCount) {
             return false
         }
@@ -296,7 +298,6 @@ class PassListActivity : PassAndroidActivity() {
             }
         }
         return true
-
     }
 
     override fun onBackPressed() {
@@ -306,5 +307,4 @@ class PassListActivity : PassAndroidActivity() {
             else -> super.onBackPressed()
         }
     }
-
 }

android/src/main/java/org/ligi/passandroid/ui/PassListFragment.kt

@@ -1,13 +1,14 @@
 package org.ligi.passandroid.ui
 
 import android.os.Bundle
-import android.support.annotation.VisibleForTesting
+import androidx.annotation.VisibleForTesting
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
-import android.support.v7.widget.LinearLayoutManager
+import androidx.recyclerview.widget.LinearLayoutManager
-import android.support.v7.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView
-import android.support.v7.widget.helper.ItemTouchHelper
+import androidx.recyclerview.widget.RecyclerView.ViewHolder
-import android.support.v7.widget.helper.ItemTouchHelper.*
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.ItemTouchHelper.*
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -38,7 +39,7 @@ class PassListFragment : Fragment() {
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         val inflate = inflater.inflate(R.layout.pass_recycler, container, false)
 
-        passStoreProjection = PassStoreProjection(passStore, arguments.getString(BUNDLE_KEY_TOPIC)!!, settings.getSortOrder())
+        passStoreProjection = PassStoreProjection(passStore, arguments?.getString(BUNDLE_KEY_TOPIC)!!, settings.getSortOrder())
         adapter = PassAdapter(activity as AppCompatActivity, passStoreProjection)
 
         inflate.pass_recyclerview.adapter = adapter
@@ -47,10 +48,10 @@ class PassListFragment : Fragment() {
 
         val simpleItemTouchCallback = object : SimpleCallback(0, LEFT or RIGHT) {
 
-            override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder)
+            override fun onMove(recyclerView: RecyclerView, viewHolder: ViewHolder, target: ViewHolder)
                     = false
 
-            override fun onSwiped(viewHolder: RecyclerView.ViewHolder, swipeDir: Int) {
+            override fun onSwiped(viewHolder: ViewHolder, swipeDir: Int) {
                 this@PassListFragment.onSwiped(viewHolder.adapterPosition, swipeDir)
             }
         }
@@ -67,10 +68,12 @@ class PassListFragment : Fragment() {
         val pass = passStoreProjection.passList[pos]
         val nextTopic = passStore.classifier.getTopicWithOffset(pass, if (swipeDir == LEFT) -1 else 1)
 
+        activity?.let {
             if (nextTopic != null) {
-            moveWithUndoSnackbar(passStore.classifier, pass, nextTopic, activity)
+                moveWithUndoSnackbar(passStore.classifier, pass, nextTopic, it)
             } else {
-            MoveToNewTopicUI(activity, passStore, pass).show()
+                MoveToNewTopicUI(it, passStore, pass).show()
+            }
         }
     }
 
@@ -93,12 +96,12 @@ class PassListFragment : Fragment() {
     }
 
     companion object {
-
+        private const val BUNDLE_KEY_TOPIC = "topic"
-        private val BUNDLE_KEY_TOPIC = "topic"
 
         fun newInstance(topic: String) = PassListFragment().apply {
-            arguments = Bundle()
+            val bundle = Bundle()
-            arguments.putString(BUNDLE_KEY_TOPIC, topic)
+            bundle.putString(BUNDLE_KEY_TOPIC, topic)
+            arguments = bundle
         }
     }
 

android/src/main/java/org/ligi/passandroid/ui/PassMenuOptions.kt

@@ -2,8 +2,8 @@ package org.ligi.passandroid.ui
 
 import android.app.Activity
 import android.content.Intent
-import android.support.v4.app.NavUtils
+import androidx.core.app.NavUtils
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.LayoutInflater
 import android.view.MenuItem
 import com.github.salomonbrys.kodein.instance

android/src/main/java/org/ligi/passandroid/ui/PassNavigationView.kt

@@ -1,9 +1,10 @@
 package org.ligi.passandroid.ui
 
+import android.annotation.SuppressLint
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
-import android.support.design.widget.NavigationView
+import com.google.android.material.navigation.NavigationView
 import android.util.AttributeSet
 import com.github.salomonbrys.kodein.instance
 import kotlinx.android.synthetic.main.navigation_drawer_header.view.*
@@ -20,9 +21,8 @@ class PassNavigationView(context: Context, attrs: AttributeSet) : NavigationView
     val passStore: PassStore = App.kodein.instance()
     val bus: EventBus = App.kodein.instance()
 
-    fun getIntent(id: Int) = when (id) {
+    private fun getIntent(id: Int) = when (id) {
         R.id.menu_settings -> Intent(context, PreferenceActivity::class.java)
-        R.id.menu_plus -> intentFromUrl("https://plus.google.com/communities/116353894782342292067")
         R.id.menu_github -> intentFromUrl("https://github.com/ligi/PassAndroid")
         R.id.menu_beta -> intentFromUrl("https://play.google.com/apps/testing/org.ligi.passandroid")
         R.id.menu_language -> intentFromUrl("https://transifex.com/projects/p/passandroid")
@@ -33,8 +33,9 @@ class PassNavigationView(context: Context, attrs: AttributeSet) : NavigationView
         else -> null
     }
 
-    fun intentFromUrl(url: String) = Intent(Intent.ACTION_VIEW).apply { data = Uri.parse(url) }
+    private fun intentFromUrl(url: String) = Intent(Intent.ACTION_VIEW).apply { data = Uri.parse(url) }
 
+    @SuppressLint("RestrictedApi") // FIXME: temporary workaround for false-positive
     override fun onAttachedToWindow() {
         super.onAttachedToWindow()
 
@@ -50,6 +51,7 @@ class PassNavigationView(context: Context, attrs: AttributeSet) : NavigationView
         onPassStoreChangeEvent(PassStoreChangeEvent)
     }
 
+    @SuppressLint("RestrictedApi") // FIXME: temporary workaround for false-positive
     override fun onDetachedFromWindow() {
         super.onDetachedFromWindow()
         bus.unregister(this)

android/src/main/java/org/ligi/passandroid/ui/PassTopicFragmentPagerAdapter.kt

@@ -1,13 +1,13 @@
 package org.ligi.passandroid.ui
 
-import android.support.v4.app.FragmentManager
+import androidx.fragment.app.FragmentManager
-import android.support.v4.app.FragmentStatePagerAdapter
+import androidx.fragment.app.FragmentStatePagerAdapter
-import android.support.v4.view.PagerAdapter
+import androidx.viewpager.widget.PagerAdapter
 import org.ligi.passandroid.model.PassClassifier
 
 class PassTopicFragmentPagerAdapter(private val passClassifier: PassClassifier, fragmentManager: FragmentManager) : FragmentStatePagerAdapter(fragmentManager) {
 
-    private lateinit var topic_array: Array<String>
+    private lateinit var topics: Array<String>
 
     init {
         notifyDataSetChanged()
@@ -15,15 +15,16 @@ class PassTopicFragmentPagerAdapter(private val passClassifier: PassClassifier,
 
     override fun notifyDataSetChanged() {
         val topics = passClassifier.getTopics()
-        topic_array = topics.toTypedArray()
+        this.topics = topics.toTypedArray()
         super.notifyDataSetChanged()
     }
 
-    override fun getItem(position: Int) = PassListFragment.newInstance(topic_array[position])
+    override fun getItem(position: Int) = PassListFragment.newInstance(topics[position])
 
-    override fun getItemPosition(`object`: Any?) = PagerAdapter.POSITION_NONE // TODO - return POSITION_UNCHANGED in some cases
+    // TODO - return POSITION_UNCHANGED in some cases
+    override fun getItemPosition(`object`: Any) = PagerAdapter.POSITION_NONE
 
-    override fun getCount() = topic_array.size
+    override fun getCount() = topics.size
 
-    override fun getPageTitle(position: Int) = topic_array[position]
+    override fun getPageTitle(position: Int) = topics[position]
 }

android/src/main/java/org/ligi/passandroid/ui/PassViewActivity.kt

@@ -2,11 +2,14 @@ package org.ligi.passandroid.ui
 
 import android.os.Build
 import android.os.Bundle
-import android.support.v4.app.*
+import androidx.core.app.*
-import android.support.v4.view.ViewPager
+import androidx.viewpager.widget.ViewPager
 import android.view.Menu
 import android.view.MenuItem
 import android.view.WindowManager
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.FragmentStatePagerAdapter
 import kotlinx.android.synthetic.main.activity_pass_view_base.*
 import org.ligi.kaxt.disableRotation
 import org.ligi.passandroid.R
@@ -20,6 +23,13 @@ class PassViewActivity : PassViewActivityBase() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        if (Build.VERSION.SDK_INT >= 27) {
+            setShowWhenLocked(true)
+            setTurnScreenOn(true)
+        } else {
+            this.window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
+        }
+
         disableRotation()
         setContentView(R.layout.activity_pass_view)
 
@@ -30,8 +40,8 @@ class PassViewActivity : PassViewActivityBase() {
         viewPager.adapter = pagerAdapter
         viewPager.currentItem = pagerAdapter.getPos(currentPass)
         viewPager.addOnPageChangeListener(object : ViewPager.SimpleOnPageChangeListener() {
-            override fun onPageSelected(i: Int) {
+            override fun onPageSelected(pos: Int) {
-                currentPass = pagerAdapter.getPass(i)
+                currentPass = pagerAdapter.getPass(pos)
                 passStore.currentPass = currentPass
             }
         })
@@ -95,6 +105,7 @@ class PassViewActivity : PassViewActivityBase() {
     override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
         android.R.id.home -> {
             val upIntent = NavUtils.getParentActivityIntent(this)
+            if (upIntent != null) {
                 if (NavUtils.shouldUpRecreateTask(this, upIntent)) {
                     TaskStackBuilder.create(this).addNextIntentWithParentStack(upIntent).startActivities()
                     finish()
@@ -103,10 +114,9 @@ class PassViewActivity : PassViewActivityBase() {
                 }
                 true
             }
+            else false
+        }
 
         else -> super.onOptionsItemSelected(item)
     }
-
-    override fun onAttachedToWindow() = window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
-
 }

android/src/main/java/org/ligi/passandroid/ui/PassViewActivityBase.kt

@@ -5,12 +5,15 @@ import android.app.Dialog
 import android.app.ProgressDialog
 import android.content.ComponentName
 import android.content.Intent
+import android.content.pm.ShortcutInfo
+import android.content.pm.ShortcutManager
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
+import android.graphics.drawable.Icon
 import android.os.Build
 import android.os.Bundle
-import android.support.design.widget.Snackbar
+import com.google.android.material.snackbar.Snackbar
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.*
 import okhttp3.OkHttpClient
 import okhttp3.Request
@@ -25,6 +28,7 @@ import org.ligi.passandroid.ui.UnzipPassController.InputStreamUnzipControllerSpe
 import permissions.dispatcher.NeedsPermission
 import permissions.dispatcher.RuntimePermissions
 import java.io.IOException
+import java.util.*
 
 @SuppressLint("Registered")
 @RuntimePermissions
@@ -44,10 +48,8 @@ open class PassViewActivityBase : PassAndroidActivity() {
         try {
             val config = ViewConfiguration.get(this)
             val menuKeyField = ViewConfiguration::class.java.getDeclaredField("sHasPermanentMenuKey")
-            if (menuKeyField != null) {
             menuKeyField.isAccessible = true
             menuKeyField.setBoolean(config, false)
-            }
         } catch (ex: Exception) {
             // Ignore - but at least we tried ;-)
         }
@@ -82,7 +84,7 @@ open class PassViewActivityBase : PassAndroidActivity() {
         }
 
         if (passStore.currentPass == null) {
-            tracker.trackException("pass not present in " + this, false)
+            tracker.trackException("pass not present in $this", false)
             finish()
             return
         }
@@ -127,7 +129,7 @@ open class PassViewActivityBase : PassAndroidActivity() {
             }
 
             R.id.install_shortcut -> {
-                PassViewActivityBasePermissionsDispatcher.createShortcutWithCheck(this)
+                createShortcutWithPermissionCheck()
                 true
             }
 
@@ -143,29 +145,40 @@ open class PassViewActivityBase : PassAndroidActivity() {
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-        PassViewActivityBasePermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults)
+        onRequestPermissionsResult(requestCode, grantResults)
     }
 
     @NeedsPermission("com.android.launcher.permission.INSTALL_SHORTCUT")
     fun createShortcut() {
-        val intent = Intent("com.android.launcher.action.INSTALL_SHORTCUT")
         val shortcutIntent = Intent()
         shortcutIntent.putExtra(EXTRA_KEY_UUID, currentPass.id)
-        val component = ComponentName(BuildConfig.APPLICATION_ID, BuildConfig.APPLICATION_ID + ".ui.PassViewActivity")
+        shortcutIntent.component = ComponentName(BuildConfig.APPLICATION_ID,
-        shortcutIntent.component = component
+                BuildConfig.APPLICATION_ID + ".ui.PassViewActivity")
-        intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent)
-        intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, currentPass.description)
 
         val passBitmap = currentPass.getBitmap(passStore, BITMAP_ICON)
-
+        val shortcutIcon = if (passBitmap != null) {
-        val bitmapToUse = if (passBitmap != null) {
             Bitmap.createScaledBitmap(passBitmap, 128, 128, true)
         } else {
             BitmapFactory.decodeResource(resources, R.drawable.ic_launcher)
         }
-        intent.putExtra(Intent.EXTRA_SHORTCUT_ICON, bitmapToUse)
+
+        if (Build.VERSION.SDK_INT >= 25) {
+            val shortcutManager = getSystemService<ShortcutManager>(ShortcutManager::class.java)
+            val shortcut = ShortcutInfo.Builder(this, "id1")
+                    .setShortLabel(currentPass.description ?: "")
+                    .setIcon(Icon.createWithBitmap(shortcutIcon))
+                    .setIntent(shortcutIntent)
+                    .build()
+
+            shortcutManager.dynamicShortcuts = Arrays.asList(shortcut)
+        } else {
+            val intent = Intent("com.android.launcher.action.INSTALL_SHORTCUT")
+            intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent)
+            intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, currentPass.description)
+            intent.putExtra(Intent.EXTRA_SHORTCUT_ICON, shortcutIcon)
             sendBroadcast(intent)
         }
+    }
 
     inner class UpdateAsync : Runnable {
 
@@ -183,7 +196,7 @@ open class PassViewActivityBase : PassAndroidActivity() {
 
             val url = pass.webServiceURL + "/v1/passes/" + pass.passIdent + "/" + pass.serial
             val requestBuilder = Request.Builder().url(url)
-            requestBuilder.addHeader("Authorization", "ApplePass " + pass.authToken!!)
+            requestBuilder.addHeader("Authorization", "ApplePass " + pass.authToken)
 
             val request = requestBuilder.build()
 
@@ -250,7 +263,7 @@ open class PassViewActivityBase : PassAndroidActivity() {
         params.screenBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_FULL
         win.attributes = params
         fullBrightnessSet = true
-        supportInvalidateOptionsMenu()
+        invalidateOptionsMenu()
     }
 
     companion object {

android/src/main/java/org/ligi/passandroid/ui/PassViewFragment.kt

@@ -2,14 +2,15 @@ package org.ligi.passandroid.ui
 
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
-import android.support.v4.text.util.LinkifyCompat
+import androidx.core.text.util.LinkifyCompat
 import android.text.util.Linkify
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import android.widget.TextView
+import androidx.fragment.app.FragmentActivity
 import com.github.salomonbrys.kodein.instance
 import kotlinx.android.synthetic.main.activity_pass_view.*
 import kotlinx.android.synthetic.main.barcode.*
@@ -27,7 +28,7 @@ import org.ligi.passandroid.ui.pass_view_holder.VerbosePassViewHolder
 
 class PassViewFragment : Fragment() {
 
-    private val passViewHelper by lazy { PassViewHelper(activity) }
+    private val passViewHelper by lazy { PassViewHelper(requireActivity()) }
     private var passStore : PassStore = App.kodein.instance()
     lateinit var pass : Pass
 
@@ -57,10 +58,10 @@ class PassViewFragment : Fragment() {
         }
 
         barcode_img.setOnClickListener {
-            activity.startActivityFromClass(FullscreenBarcodeActivity::class.java)
+            activity?.startActivityFromClass(FullscreenBarcodeActivity::class.java)
         }
 
-        BarcodeUIController(view!!, pass.barCode, activity, passViewHelper)
+        BarcodeUIController(view!!, pass.barCode, activity!!, passViewHelper)
 
         processImage(logo_img_view, PassBitmapDefinitions.BITMAP_LOGO, pass)
         processImage(footer_img_view, PassBitmapDefinitions.BITMAP_FOOTER, pass)
@@ -68,7 +69,7 @@ class PassViewFragment : Fragment() {
         processImage(strip_img_view, PassBitmapDefinitions.BITMAP_STRIP, pass)
 
         if (map_container != null) {
-            if (!(pass.locations.isNotEmpty() && PassbookMapsFacade.init(activity))) {
+            if (!(pass.locations.isNotEmpty() && PassbookMapsFacade.init(activity as FragmentActivity))) {
                 @Suppress("PLUGIN_WARNING")
                 map_container.visibility = View.GONE
             }
@@ -82,15 +83,15 @@ class PassViewFragment : Fragment() {
             if (field.hide) {
                 backStrBuilder.append(field.toHtmlSnippet())
             } else {
-                val v = activity.layoutInflater.inflate(R.layout.main_field_item, front_field_container, false)
+                val v = activity!!.layoutInflater.inflate(R.layout.main_field_item, front_field_container, false)
-                val key = v.findViewById(R.id.key) as TextView
+                val key = v?.findViewById<TextView>(R.id.key)
-                key.text = field.label
+                key?.text = field.label
-                val value = v.findViewById(R.id.value) as TextView
+                val value = v?.findViewById<TextView>(R.id.value)
-                value.text = field.value
+                value?.text = field.value
 
                 front_field_container.addView(v)
-                LinkifyCompat.addLinks(key, Linkify.ALL)
+                key?.let { LinkifyCompat.addLinks(it, Linkify.ALL) }
-                LinkifyCompat.addLinks(value, Linkify.ALL)
+                value?.let { LinkifyCompat.addLinks(it, Linkify.ALL) }
             }
         }
 
@@ -104,8 +105,7 @@ class PassViewFragment : Fragment() {
         LinkifyCompat.addLinks(back_fields, Linkify.ALL)
 
         val passViewHolder = VerbosePassViewHolder(pass_card)
-        passViewHolder.apply(pass, passStore, activity)
+        passViewHolder.apply(pass, passStore, activity!!)
-
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
@@ -114,7 +114,6 @@ class PassViewFragment : Fragment() {
         val rootView = inflater.inflate(R.layout.activity_pass_view_page, container, false)
         arguments?.takeIf { it.containsKey(PassViewActivityBase.EXTRA_KEY_UUID) }?.apply {
             val uuid = getString(PassViewActivityBase.EXTRA_KEY_UUID)
-
             pass = if (uuid != null) {
                 passStore.getPassbookForId(uuid) ?: passStore.currentPass!!
             } else {
@@ -125,10 +124,10 @@ class PassViewFragment : Fragment() {
         return rootView
     }
 
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        val passExtrasView = activity.layoutInflater.inflate(R.layout.pass_view_extra_data, passExtrasContainer, false)
+        val passExtrasView = activity!!.layoutInflater.inflate(R.layout.pass_view_extra_data, passExtrasContainer, false)
         passExtrasContainer.addView(passExtrasView)
     }
 }

android/src/main/java/org/ligi/passandroid/ui/PassViewHelper.kt

@@ -17,13 +17,13 @@ class PassViewHelper(private val context: Activity) {
         if (bitmap != null) {
             imageView.setImageBitmap(bitmap)
             imageView.visibility = View.VISIBLE
-            imageView.layoutParams = getLayoutParamsSoThatWeHaveMinimumAFingerInHeight(imageView, bitmap)
+            imageView.layoutParams = getLayoutParamsMinHeight(imageView, bitmap)
         } else {
             imageView.visibility = View.GONE
         }
     }
 
-    fun getLayoutParamsSoThatWeHaveMinimumAFingerInHeight(imageView: ImageView, bitmap: Bitmap)
+    private fun getLayoutParamsMinHeight(imageView: ImageView, bitmap: Bitmap)
             = imageView.layoutParams!!.apply {
         height = if (bitmap.height < fingerSize) {
             fingerSize
@@ -33,5 +33,4 @@ class PassViewHelper(private val context: Activity) {
     }
 
     val windowWidth by lazy { context.windowManager.getSizeAsPointCompat().x }
-
 }

android/src/main/java/org/ligi/passandroid/ui/PreferenceActivity.kt

@@ -2,7 +2,7 @@ package org.ligi.passandroid.ui
 
 import android.annotation.SuppressLint
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.view.MenuItem
 import org.ligi.passandroid.R
 

android/src/main/java/org/ligi/passandroid/ui/PrefsFragment.kt

@@ -3,10 +3,9 @@ package org.ligi.passandroid.ui
 import android.Manifest
 import android.content.SharedPreferences
 import android.os.Bundle
-import android.support.v7.app.AppCompatDelegate
+import androidx.appcompat.app.AppCompatDelegate
-import android.support.v7.app.AppCompatDelegate.MODE_NIGHT_AUTO
+import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_AUTO
-import android.support.v7.preference.PreferenceFragmentCompat
+import androidx.preference.PreferenceFragmentCompat
-import org.ligi.kaxt.recreateWhenPossible
 import org.ligi.passandroid.App
 import org.ligi.passandroid.R
 import permissions.dispatcher.NeedsPermission
@@ -27,15 +26,14 @@ class PrefsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedPref
 
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) {
         if (key == getString(R.string.preference_key_nightmode)) {
-
             @AppCompatDelegate.NightMode val nightMode = App.settings.getNightMode()
 
             if (nightMode == MODE_NIGHT_AUTO) {
-                PrefsFragmentPermissionsDispatcher.ensureDayNightWithCheck(this)
+                ensureDayNightWithPermissionCheck()
             }
 
             AppCompatDelegate.setDefaultNightMode(nightMode)
-            activity.recreateWhenPossible()
+            activity?.recreate()
         }
     }
 
@@ -51,7 +49,7 @@ class PrefsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedPref
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-        PrefsFragmentPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults)
+        onRequestPermissionsResult(requestCode, grantResults)
     }
 
 }

android/src/main/java/org/ligi/passandroid/ui/SearchPassesIntentService.kt

@@ -8,7 +8,7 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Environment
 import android.preference.PreferenceManager
-import android.support.v4.app.NotificationCompat
+import androidx.core.app.NotificationCompat
 import com.github.salomonbrys.kodein.instance
 import org.greenrobot.eventbus.EventBus
 import org.ligi.passandroid.App
@@ -57,7 +57,7 @@ class SearchPassesIntentService : IntentService("SearchPassesIntentService") {
 
         val preferences = PreferenceManager.getDefaultSharedPreferences(applicationContext)
         for (path in PastLocationsStore(preferences, tracker).locations) {
-            search_in(File(path), false)
+            searchIn(File(path), false)
         }
 
         // note to future_me: yea one thinks we only need to search root here, but root was /system for me and so
@@ -69,19 +69,19 @@ class SearchPassesIntentService : IntentService("SearchPassesIntentService") {
         // up the refreshing of passes as it took so long to traverse all files on the SDCard
         // one could think about not going there anymore but a short look at this showed that it seems cost more time to check than what it gains
         // in download there are mostly single files in a flat dir - no huge tree behind this imho
-        search_in(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), true)
+        searchIn(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), true)
 
         // | /system
-        search_in(Environment.getRootDirectory(), true)
+        searchIn(Environment.getRootDirectory(), true)
 
         // | /mnt/sdcard
-        search_in(Environment.getExternalStorageDirectory(), true)
+        searchIn(Environment.getExternalStorageDirectory(), true)
 
         // | /cache
-        search_in(Environment.getDownloadCacheDirectory(), true)
+        searchIn(Environment.getDownloadCacheDirectory(), true)
 
         // | /data
-        search_in(Environment.getDataDirectory(), true)
+        searchIn(Environment.getDataDirectory(), true)
         notifyManager!!.cancel(PROGRESS_NOTIFICATION_ID)
 
         bus.post(ScanFinishedEvent(foundList!!))
@@ -90,7 +90,7 @@ class SearchPassesIntentService : IntentService("SearchPassesIntentService") {
     /**
      * recursive voyage starting at path to find files named .pkpass
      */
-    private fun search_in(path: File, recursive: Boolean) {
+    private fun searchIn(path: File, recursive: Boolean) {
 
         if (System.currentTimeMillis() - lastProgressUpdate > 1000) {
             lastProgressUpdate = System.currentTimeMillis()
@@ -114,7 +114,7 @@ class SearchPassesIntentService : IntentService("SearchPassesIntentService") {
             }
             Log.i("search " + file.absoluteFile)
             if (recursive && file.isDirectory) {
-                search_in(file, true)
+                searchIn(file, true)
             } else if (file.name.toLowerCase().endsWith(".pkpass") || file.name.toLowerCase().endsWith(".espass")) {
                 Log.i("found" + file.absolutePath)
 
@@ -149,10 +149,8 @@ class SearchPassesIntentService : IntentService("SearchPassesIntentService") {
     }
 
     companion object {
-
+        const val PROGRESS_NOTIFICATION_ID = 1
-        val PROGRESS_NOTIFICATION_ID = 1
+        const val FOUND_NOTIFICATION_ID = 2
-        val FOUND_NOTIFICATION_ID = 2
+        const val REQUEST_CODE = 1
-
-        val REQUEST_CODE = 1
     }
 }

android/src/main/java/org/ligi/passandroid/ui/SearchSuccessCallback.kt

@@ -5,7 +5,7 @@ import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
-import android.support.v4.app.NotificationCompat
+import androidx.core.app.NotificationCompat
 import org.ligi.passandroid.R
 import org.ligi.passandroid.model.PassBitmapDefinitions
 import org.ligi.passandroid.model.PassStore

android/src/main/java/org/ligi/passandroid/ui/TouchImageActivity.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui
 
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.view.MenuItem
 import com.github.salomonbrys.kodein.instance
 import com.ortiz.touch.TouchImageView

android/src/main/java/org/ligi/passandroid/ui/UnzipPassController.kt

@@ -39,7 +39,7 @@ object UnzipPassController {
             tempFile.delete()
         } catch (e: Exception) {
             App.tracker.trackException("problem processing InputStream", e, false)
-            spec.failCallback?.fail("problem with temp file" + e)
+            spec.failCallback?.fail("problem with temp file: $e")
         }
 
     }
@@ -47,12 +47,12 @@ object UnzipPassController {
     private fun processFile(spec: FileUnzipControllerSpec) {
 
         var uuid = UUID.randomUUID().toString()
-        val path = File(spec.context.cacheDir, "temp/" + uuid)
+        val path = File(spec.context.cacheDir, "temp/$uuid")
 
         path.mkdirs()
 
         if (!path.exists()) {
-            spec.failCallback?.fail("Problem creating the temp dir: " + path)
+            spec.failCallback?.fail("Problem creating the temp dir: $path")
             return
         }
 
@@ -66,36 +66,31 @@ object UnzipPassController {
         }
 
 
-        val manifest_json: JSONObject
         val manifestFile = File(path, "manifest.json")
         val espassFile = File(path, "main.json")
+        val manifestJSON: JSONObject
 
-        if (manifestFile.exists()) {
+        when {
-            try {
+            manifestFile.exists() -> try {
                 val readToString = manifestFile.bufferedReader().readText()
-                manifest_json = readJSONSafely(readToString)!!
+                manifestJSON = readJSONSafely(readToString)!!
-                uuid = manifest_json.getString("pass.json")
+                uuid = manifestJSON.getString("pass.json")
             } catch (e: Exception) {
-                spec.failCallback?.fail("Problem with manifest.json: " + e)
+                spec.failCallback?.fail("Problem with manifest.json: $e")
                 return
             }
-
+            espassFile.exists() -> try {
-        } else if (espassFile.exists()) {
-            try {
                 val readToString = espassFile.bufferedReader().readText()
-                manifest_json = readJSONSafely(readToString)!!
+                manifestJSON = readJSONSafely(readToString)!!
-                uuid = manifest_json.getString("id")
+                uuid = manifestJSON.getString("id")
             } catch (e: Exception) {
-                spec.failCallback?.fail("Problem with manifest.json: " + e)
+                spec.failCallback?.fail("Problem with manifest.json: $e")
                 return
             }
-
+            else -> {
-        } else {
-
-
                 val bitmap = BitmapFactory.decodeFile(spec.zipFileString)
-
                 val resources = spec.context.resources
+
                 if (bitmap != null) {
                     val imagePass = createPassForImageImport(resources)
                     val pathForID = spec.passStore.getPathForID(imagePass.id)
@@ -138,22 +133,22 @@ object UnzipPassController {
                     } catch (e: Exception) {
                         e.printStackTrace()
                     }
-
                 }
 
                 spec.failCallback?.fail("Pass is not espass or pkpass format :-(")
                 return
             }
-
-        spec.targetPath.mkdirs()
-        val rename_file = File(spec.targetPath, uuid)
-
-        if (spec.overwrite && rename_file.exists()) {
-            rename_file.deleteRecursively()
         }
 
-        if (!rename_file.exists()) {
+        spec.targetPath.mkdirs()
-            path.renameTo(rename_file)
+        val renamedFile = File(spec.targetPath, uuid)
+
+        if (spec.overwrite && renamedFile.exists()) {
+            renamedFile.deleteRecursively()
+        }
+
+        if (!renamedFile.exists()) {
+            path.renameTo(renamedFile)
         } else {
             Log.i("Pass with same ID exists")
         }

android/src/main/java/org/ligi/passandroid/ui/UnzipPassDialog.kt

@@ -2,7 +2,7 @@ package org.ligi.passandroid.ui
 
 import android.app.Activity
 import android.app.ProgressDialog
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import org.ligi.passandroid.R
 import org.ligi.passandroid.model.InputStreamWithSource
 import org.ligi.passandroid.model.PassStore

android/src/main/java/org/ligi/passandroid/ui/Visibility.java

@@ -1,6 +1,6 @@
 package org.ligi.passandroid.ui;
 
-import android.support.annotation.IntDef;
+import androidx.annotation.IntDef;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import static android.view.View.GONE;

android/src/main/java/org/ligi/passandroid/ui/edit/BarCodeIntentIntegrator.java

@@ -8,8 +8,8 @@ import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
-import android.support.v7.app.AlertDialog;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Log;
 import java.util.Arrays;
 import java.util.Collection;
@@ -90,6 +90,7 @@ import java.util.Map;
  * @author Brad Drehmer
  * @author gcstang
  */
+@SuppressWarnings("WeakerAccess")
 public class BarCodeIntentIntegrator {
 
     public static final int REQUEST_CODE = 0x0000c0de; // Only use bottom 16 bits
@@ -130,7 +131,7 @@ public class BarCodeIntentIntegrator {
     private String buttonYes;
     private String buttonNo;
     private List<String> targetApplications;
-    private final Map<String, Object> moreExtras = new HashMap<String, Object>(3);
+    private final Map<String, Object> moreExtras = new HashMap<>(3);
 
     /**
      * @param activity {@link Activity} invoking the integration
@@ -313,7 +314,7 @@ public class BarCodeIntentIntegrator {
      * @see android.app.Activity#startActivityForResult(Intent, int)
      * @see android.app.Fragment#startActivityForResult(Intent, int)
      */
-    protected void startActivityForResult(Intent intent, int code) {
+    private void startActivityForResult(Intent intent, @SuppressWarnings("SameParameterValue") int code) {
         if (fragment == null) {
             activity.startActivityForResult(intent, code);
         } else {

android/src/main/java/org/ligi/passandroid/ui/edit/BarcodeEditController.kt

@@ -1,8 +1,8 @@
 package org.ligi.passandroid.ui.edit
 
 import android.content.Intent
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.view.View
 import android.widget.RadioButton
 import kotlinx.android.synthetic.main.barcode_edit.view.*
@@ -14,14 +14,11 @@ import org.ligi.passandroid.ui.BarcodeUIController
 import org.ligi.passandroid.ui.PassViewHelper
 import java.util.*
 
-class BarcodeEditController(val rootView: View, internal val context: AppCompatActivity, barCode: BarCode) {
+class BarcodeEditController(private val rootView: View, internal val context: AppCompatActivity, barCode: BarCode) {
-
+    private var barcodeFormat: PassBarCodeFormat?
-    var barcodeFormat: PassBarCodeFormat?
+    private val intentFragment: Fragment
-
-    internal val intentFragment: Fragment
 
     class IntentFragment : Fragment() {
-
         var scanCallback: (String) -> Unit = {}
 
         override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
@@ -37,7 +34,7 @@ class BarcodeEditController(val rootView: View, internal val context: AppCompatA
             rootView.barcodeRadioGroup.addView(radioButton)
 
             radioButton.text = it.name
-            radioButton.setOnCheckedChangeListener { buttonView, isChecked ->
+            radioButton.setOnCheckedChangeListener { _, isChecked ->
                 if (isChecked) {
                     barcodeFormat = it
                     refresh()
@@ -53,7 +50,7 @@ class BarcodeEditController(val rootView: View, internal val context: AppCompatA
         intentFragment = IntentFragment()
         barcodeFormat = barCode.format
 
-        rootView.randomButton.setOnClickListener({
+        rootView.randomButton.setOnClickListener {
             rootView.messageInput.setText(when (barcodeFormat) {
                 EAN_8 -> getRandomEAN8()
                 EAN_13 -> getRandomEAN13()
@@ -61,9 +58,9 @@ class BarcodeEditController(val rootView: View, internal val context: AppCompatA
                 else -> UUID.randomUUID().toString().toUpperCase()
             })
             refresh()
-        })
+        }
 
-        rootView.scanButton.setOnClickListener({
+        rootView.scanButton.setOnClickListener {
             val barCodeIntentIntegrator = BarCodeIntentIntegrator(intentFragment)
 
             if (barcodeFormat == QR_CODE) {
@@ -72,7 +69,7 @@ class BarcodeEditController(val rootView: View, internal val context: AppCompatA
                 barCodeIntentIntegrator.initiateScan(setOf(barcodeFormat!!.name))
             }
 
-        })
+        }
 
         intentFragment.scanCallback = { newMessage ->
             rootView.messageInput.setText(newMessage)

android/src/main/java/org/ligi/passandroid/ui/edit/FieldsEditFragment.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui.edit
 
 import android.os.Bundle
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -26,7 +26,7 @@ class FieldsEditFragment : Fragment() {
         this.inflater = inflater
         val inflate = inflater.inflate(R.layout.edit_fields, container, false)
 
-        isEditingHiddenFields = arguments.getBoolean(ARGUMENT_KEY)
+        arguments?.let { isEditingHiddenFields = it.getBoolean(ARGUMENT_KEY) }
 
         if (isEditingHiddenFields) {
             inflate.add_field.setText(R.string.add_back_fields)
@@ -74,7 +74,7 @@ class FieldsEditFragment : Fragment() {
 
     companion object {
 
-        private val ARGUMENT_KEY = "KEY"
+        private const val ARGUMENT_KEY = "KEY"
 
         fun create(primary: Boolean): FieldsEditFragment {
             val fieldsEditFragment = FieldsEditFragment()

android/src/main/java/org/ligi/passandroid/ui/edit/ImageEditHelper.kt

@@ -46,12 +46,12 @@ class ImageEditHelper(private val context: Activity, private val passStore: Pass
 
     companion object {
 
-        private val REQ_CODE_OFFSET = 5555
+        private const val REQ_CODE_OFFSET = 5555
-        val REQ_CODE_PICK_LOGO = 1 + REQ_CODE_OFFSET
+        const val REQ_CODE_PICK_LOGO = 1 + REQ_CODE_OFFSET
-        val REQ_CODE_PICK_ICON = 2 + REQ_CODE_OFFSET
+        const val REQ_CODE_PICK_ICON = 2 + REQ_CODE_OFFSET
-        val REQ_CODE_PICK_STRIP = 3 + REQ_CODE_OFFSET
+        const val REQ_CODE_PICK_STRIP = 3 + REQ_CODE_OFFSET
-        val REQ_CODE_PICK_THUMBNAIL = 4 + REQ_CODE_OFFSET
+        const val REQ_CODE_PICK_THUMBNAIL = 4 + REQ_CODE_OFFSET
-        val REQ_CODE_PICK_FOOTER = 5 + REQ_CODE_OFFSET
+        const val REQ_CODE_PICK_FOOTER = 5 + REQ_CODE_OFFSET
 
         @Pass.PassBitmap
         fun getImageStringByRequestCode(requestCode: Int): String? = when (requestCode) {

android/src/main/java/org/ligi/passandroid/ui/edit/dialogs/BarcodePickDialog.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui.edit.dialogs
 
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import org.greenrobot.eventbus.EventBus
 import org.ligi.kaxt.inflate
 import org.ligi.passandroid.R

android/src/main/java/org/ligi/passandroid/ui/edit/dialogs/CategoryPickDialog.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui.edit.dialogs
 
 import android.content.Context
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup

android/src/main/java/org/ligi/passandroid/ui/edit/dialogs/ColorPickDialog.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui.edit.dialogs
 
 import android.content.Context
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import android.view.LayoutInflater
 import kotlinx.android.synthetic.main.edit_color.view.*
 import org.greenrobot.eventbus.EventBus

android/src/main/java/org/ligi/passandroid/ui/pass_view_holder/CondensedPassViewHolder.kt

@@ -1,7 +1,7 @@
 package org.ligi.passandroid.ui.pass_view_holder
 
 import android.app.Activity
-import android.support.v7.widget.CardView
+import androidx.cardview.widget.CardView
 import android.view.View
 import kotlinx.android.synthetic.main.pass_list_item.view.*
 import kotlinx.android.synthetic.main.time_and_nav.view.*

android/src/main/java/org/ligi/passandroid/ui/pass_view_holder/EditViewHolder.kt

@@ -3,8 +3,8 @@ package org.ligi.passandroid.ui.pass_view_holder
 import android.app.Activity
 import android.app.DatePickerDialog
 import android.app.TimePickerDialog
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
-import android.support.v7.widget.CardView
+import androidx.cardview.widget.CardView
 import android.view.View.VISIBLE
 import android.widget.DatePicker
 import android.widget.TimePicker
@@ -19,9 +19,9 @@ import org.threeten.bp.ZonedDateTime
 
 class EditViewHolder(view: CardView) : VerbosePassViewHolder(view), TimePickerDialog.OnTimeSetListener, DatePickerDialog.OnDateSetListener {
 
-    lateinit private var time: ZonedDateTime
+    private lateinit var time: ZonedDateTime
-    lateinit private var pass: PassImpl
+    private lateinit var pass: PassImpl
-    lateinit private var passStore: PassStore
+    private lateinit var passStore: PassStore
 
     override fun apply(pass: Pass, passStore: PassStore, activity: Activity) {
         super.apply(pass, passStore, activity)
@@ -30,7 +30,7 @@ class EditViewHolder(view: CardView) : VerbosePassViewHolder(view), TimePickerDi
         this.passStore = passStore
 
         val calendarTimespan = pass.calendarTimespan
-        time = if (calendarTimespan != null && calendarTimespan.from != null) {
+        time = if (calendarTimespan?.from != null) {
             calendarTimespan.from
         } else {
             ZonedDateTime.now()

android/src/main/java/org/ligi/passandroid/ui/pass_view_holder/PassViewHolder.kt

@@ -1,8 +1,8 @@
 package org.ligi.passandroid.ui.pass_view_holder
 
 import android.app.Activity
-import android.support.v7.widget.CardView
+import androidx.cardview.widget.CardView
-import android.support.v7.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView
 import android.text.format.DateUtils
 import android.view.View.*
 import kotlinx.android.synthetic.main.pass_list_item.view.*