Merge pull request #6233 from thundernest/fix_build_warnings

Fix some build warnings

app/autodiscovery/api/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 java {
     sourceCompatibility = javaVersion

app/autodiscovery/srvrecords/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 java {
     sourceCompatibility = javaVersion

app/autodiscovery/thunderbird/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 java {
     sourceCompatibility = javaVersion

app/core/src/main/java/com/fsck/k9/AccountPreferenceSerializer.kt

@@ -521,11 +521,11 @@ class AccountPreferenceSerializer(
             defaultEnum
         } else {
             try {
-                java.lang.Enum.valueOf<T>(defaultEnum.declaringClass, stringPref)
+                java.lang.Enum.valueOf<T>(defaultEnum.declaringJavaClass, stringPref)
             } catch (ex: IllegalArgumentException) {
                 Timber.w(
                     ex, "Unable to convert preference key [%s] value [%s] to enum of type %s",
-                    key, stringPref, defaultEnum.declaringClass
+                    key, stringPref, defaultEnum.declaringJavaClass
                 )
 
                 defaultEnum

app/html-cleaner/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 java {
     sourceCompatibility = javaVersion

build.gradle

@@ -104,7 +104,7 @@ subprojects {
 
     tasks.withType(KotlinCompile) {
         kotlinOptions {
-            freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
+            freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
         }
     }
 

mail/common/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 if (rootProject.testCoverage) {
     apply plugin: 'jacoco'

mail/protocols/imap/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 if (rootProject.testCoverage) {
     apply plugin: 'jacoco'

mail/protocols/pop3/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'java-library'
+apply plugin: 'com.android.lint'
 
 if (rootProject.testCoverage) {
     apply plugin: 'jacoco'

mail/protocols/smtp/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 if (rootProject.testCoverage) {
     apply plugin: 'jacoco'

mail/protocols/webdav/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'java-library'
+apply plugin: 'com.android.lint'
 
 if (rootProject.testCoverage) {
     apply plugin: 'jacoco'

mail/testing/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
 
 if (rootProject.testCoverage) {
     apply plugin: 'jacoco'