Android Oreo Issues Has Been Resolved.

app/build.gradle

@@ -1,13 +1,15 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.2"
+    compileSdkVersion 29
+    buildToolsVersion '29.0.3'
 
     defaultConfig {
         applicationId "com.ahmedjazzar.rosetta.app"
-        minSdkVersion 14
-        targetSdkVersion 23
+        minSdkVersion 15
+        targetSdkVersion 29
         versionCode 1
         versionName "0.9.3"
     }
@@ -20,12 +22,15 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:23.1.1'
-    compile 'com.android.support:design:23.1.1'
-
-    testCompile 'junit:junit:4.12'
-    testCompile 'org.mockito:mockito-core:1.10.19'
-
-    compile project(':rosetta')
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    testImplementation 'junit:junit:4.13'
+    testImplementation 'org.mockito:mockito-core:2.23.0'
+    implementation project(':rosetta')
+    implementation "androidx.core:core-ktx:1.2.0"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
 }

app/src/main/AndroidManifest.xml

@@ -3,21 +3,21 @@
     package="com.ahmedjazzar.rosetta.app">
 
     <application
+        android:name=".MainApplication"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"
-        android:name=".MainApplication" >
+        android:theme="@style/AppTheme">
 
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name"
             android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
     </application>

app/src/main/java/com/ahmedjazzar/rosetta/app/BaseActivity.java

@@ -0,0 +1,29 @@
+package com.ahmedjazzar.rosetta.app;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.ahmedjazzar.rosetta.ContextWrapper;
+
+import java.util.Locale;
+
+public abstract class BaseActivity extends AppCompatActivity {
+    SharedPreferences mSharedPreferences;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+    }
+
+    @Override
+    protected void attachBaseContext(Context newBase) {
+        mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(newBase);
+        Locale locale = new Locale(mSharedPreferences.getString("user_preferred_language", "en"));
+        Context context = ContextWrapper.wrap(newBase, locale);
+        super.attachBaseContext(context);
+    }
+}

app/src/main/java/com/ahmedjazzar/rosetta/app/MainActivity.java

@@ -1,27 +1,23 @@
 package com.ahmedjazzar.rosetta.app;
 
 import android.os.Bundle;
-import android.support.design.widget.FloatingActionButton;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.view.View;
 import android.view.Menu;
 import android.view.MenuItem;
 
-import com.ahmedjazzar.rosetta.LanguageSwitcher;
-
-import java.util.Locale;
-
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends BaseActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        Toolbar toolbar = findViewById(R.id.toolbar);
 
         // This floating button switching between Arabic and English Locales manually upon click
-        final FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
+        final FloatingActionButton fab = findViewById(R.id.fab);
         setSupportActionBar(toolbar);
 
         if (MainApplication.languageSwitcher.getCurrentLocale().getLanguage().equals("ar"))   {

app/src/main/java/com/ahmedjazzar/rosetta/app/MainApplication.java

@@ -1,7 +1,11 @@
 package com.ahmedjazzar.rosetta.app;
 
 import android.app.Application;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
 
+import com.ahmedjazzar.rosetta.ContextWrapper;
 import com.ahmedjazzar.rosetta.LanguageSwitcher;
 
 import java.util.HashSet;

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

@@ -1,34 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<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:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fitsSystemWindows="true"
     tools:context="com.ahmedjazzar.rosetta.app.MainActivity">
 
-    <android.support.design.widget.AppBarLayout
+    <com.google.android.material.appbar.AppBarLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:theme="@style/AppTheme.AppBarOverlay">
 
-        <android.support.v7.widget.Toolbar
+        <androidx.appcompat.widget.Toolbar
             android:id="@+id/toolbar"
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
             app:popupTheme="@style/AppTheme.PopupOverlay" />
 
-    </android.support.design.widget.AppBarLayout>
+    </com.google.android.material.appbar.AppBarLayout>
 
     <include layout="@layout/content_main" />
 
-    <android.support.design.widget.FloatingActionButton
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/fab"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|end"
         android:layout_margin="@dimen/fab_margin"
         android:src="@drawable/ic_action_name" />
 
-</android.support.design.widget.CoordinatorLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/values-v21/styles.xml

@@ -4,6 +4,6 @@
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
         <item name="android:windowDrawsSystemBarBackgrounds">true</item>
-        <item name="android:statusBarColor">@android:color/transparent</item>
+        <item name="android:statusBarColor">@color/colorPrimaryDark</item>
     </style>
 </resources>

build.gradle

@@ -1,11 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+    ext.kotlin_version = '1.3.71'
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,6 +18,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 

gradle.properties

@@ -15,4 +15,6 @@
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
-# org.gradle.parallel=true
+# org.gradle.parallel=true
+android.enableJetifier=true
+android.useAndroidX=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Oct 21 11:34:03 PDT 2015
+#Mon Mar 30 15:47:02 GST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip

rosetta/build.gradle

@@ -1,4 +1,6 @@
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-android'
 
 ext {
     bintrayRepo = 'maven'
@@ -14,7 +16,7 @@ ext {
     siteUrl = 'https://github.com/ahmedaljazzar/rosetta'
     gitUrl = 'https://github.com/ahmedaljazzar/rosetta.git'
 
-    libraryVersion = '1.0.1'
+    libraryVersion = '1.0.2'
 
     developerId = 'ahmedaljazzar'
     developerName = 'Ahmed Jazzar'
@@ -29,11 +31,12 @@ buildscript {
     repositories {
         jcenter()
         mavenCentral()
+        google()
     }
     dependencies {
-        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.4'
-        classpath 'com.android.tools.build:gradle:1.2.3'
-        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
+        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
+        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
     }
 }
 
@@ -45,12 +48,12 @@ android {
         maven { url 'http://repo1.maven.org/maven2' }
     }
 
-    compileSdkVersion 23
-    buildToolsVersion "23.0.2"
+    compileSdkVersion 29
+    buildToolsVersion '29.0.3'
 
     defaultConfig {
-        minSdkVersion 14
-        targetSdkVersion 23
+        minSdkVersion 15
+        targetSdkVersion 29
         versionCode 3
         versionName "1.0.1"
     }
@@ -64,11 +67,17 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
-    testCompile 'org.mockito:mockito-core:1.10.19'
-    compile 'com.android.support:appcompat-v7:23.1.1'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.13'
+    testImplementation 'org.mockito:mockito-core:2.23.0'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.jakewharton:process-phoenix:2.0.0'
+    implementation "androidx.core:core-ktx:1.2.0"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
 }
 
-apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle'
-apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/bintrayv1.gradle'
+//apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle'
+//apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/bintrayv1.gradle'

rosetta/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.ahmedjazzar.rosetta">
 
-    <application android:supportsRtl="true" />
+    <application android:supportsRtl="true"/>
 </manifest>

rosetta/src/main/java/com/ahmedjazzar/rosetta/ContextWrapper.java

@@ -0,0 +1,42 @@
+package com.ahmedjazzar.rosetta;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.os.Build;
+import android.os.LocaleList;
+
+import java.util.Locale;
+
+public class ContextWrapper extends android.content.ContextWrapper {
+
+    public ContextWrapper(Context base) {
+        super(base);
+    }
+
+    public static ContextWrapper wrap(Context context, Locale newLocale) {
+
+        Resources res = context.getResources();
+        Configuration configuration = res.getConfiguration();
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            configuration.setLocale(newLocale);
+
+            LocaleList localeList = new LocaleList(newLocale);
+            LocaleList.setDefault(localeList);
+            configuration.setLocales(localeList);
+
+            context = context.createConfigurationContext(configuration);
+
+        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            configuration.setLocale(newLocale);
+            context = context.createConfigurationContext(configuration);
+
+        } else {
+            configuration.locale = newLocale;
+            res.updateConfiguration(configuration, res.getDisplayMetrics());
+        }
+
+        return new ContextWrapper(context);
+    }
+}

rosetta/src/main/java/com/ahmedjazzar/rosetta/LanguageSwitcher.java

@@ -2,8 +2,8 @@
 
 import android.app.Activity;
 import android.content.Context;
-import android.support.annotation.NonNull;
-import android.support.v4.app.FragmentActivity;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.FragmentActivity;
 
 import java.util.HashSet;
 import java.util.Locale;