allow changing the app language on Android 13+

app/src/main/kotlin/com/simplemobiletools/launcher/activities/SettingsActivity.kt

@@ -3,12 +3,14 @@ package com.simplemobiletools.launcher.activities
 import android.os.Bundle
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.NavigationIcon
+import com.simplemobiletools.commons.helpers.isTiramisuPlus
 import com.simplemobiletools.commons.models.FAQItem
 import com.simplemobiletools.launcher.BuildConfig
 import com.simplemobiletools.launcher.R
 import com.simplemobiletools.launcher.extensions.config
 import kotlinx.android.synthetic.main.activity_settings.*
 import java.util.*
+import kotlin.system.exitProcess
 
 class SettingsActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -24,6 +26,7 @@ class SettingsActivity : SimpleActivity() {
         setupPurchaseThankYou()
         setupCustomizeColors()
         setupUseEnglish()
+        setupLanguage()
         updateTextColors(settings_holder)
 
         arrayOf(settings_color_customization_label, settings_general_settings_label).forEach {
@@ -54,6 +57,7 @@ class SettingsActivity : SimpleActivity() {
         // make sure the corners at ripple fit the stroke rounded corners
         if (settings_purchase_thank_you_holder.isGone()) {
             settings_use_english_holder.background = resources.getDrawable(R.drawable.ripple_top_corners, theme)
+            settings_language_holder.background = resources.getDrawable(R.drawable.ripple_top_corners, theme)
         }
 
         settings_purchase_thank_you_holder.setOnClickListener {
@@ -68,13 +72,20 @@ class SettingsActivity : SimpleActivity() {
     }
 
     private fun setupUseEnglish() {
-        settings_use_english_holder.beVisibleIf(config.wasUseEnglishToggled || Locale.getDefault().language != "en")
+        settings_use_english_holder.beVisibleIf((config.wasUseEnglishToggled || Locale.getDefault().language != "en") && !isTiramisuPlus())
         settings_use_english.isChecked = config.useEnglish
-
         settings_use_english_holder.setOnClickListener {
             settings_use_english.toggle()
             config.useEnglish = settings_use_english.isChecked
-            System.exit(0)
+            exitProcess(0)
+        }
+    }
+
+    private fun setupLanguage() {
+        settings_language.text = Locale.getDefault().displayLanguage
+        settings_language_holder.beVisibleIf(isTiramisuPlus())
+        settings_language_holder.setOnClickListener {
+            launchChangeAppLanguageIntent()
         }
     }
 

app/src/main/res/layout/activity_settings.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/settings_coordinator"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
@@ -113,6 +114,30 @@
                         android:text="@string/use_english_language" />
 
                 </RelativeLayout>
+
+                <RelativeLayout
+                    android:id="@+id/settings_language_holder"
+                    style="@style/SettingsHolderTextViewStyle"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="@drawable/ripple_background">
+
+                    <com.simplemobiletools.commons.views.MyTextView
+                        android:id="@+id/settings_language_label"
+                        style="@style/SettingsTextLabelStyle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/language" />
+
+                    <com.simplemobiletools.commons.views.MyTextView
+                        android:id="@+id/settings_language"
+                        style="@style/SettingsTextValueStyle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_below="@+id/settings_language_label"
+                        tools:text="English" />
+
+                </RelativeLayout>
             </LinearLayout>
         </LinearLayout>
     </androidx.core.widget.NestedScrollView>