Gradle version Updated, Migrated to AndroidX, Dependencies version Updated

app/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    compileSdkVersion 29
+    buildToolsVersion '29.0.2'
     defaultConfig {
         applicationId "com.boisneyphilippe.githubarchitecturecomponents"
         minSdkVersion 19
-        targetSdkVersion 27
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
     buildTypes {
         release {
@@ -25,32 +25,33 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'com.android.support:design:27.1.1'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
-    implementation 'com.android.support:recyclerview-v7:27.1.1'
+    implementation 'com.google.android.material:material:1.2.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
 
     // ViewModel and LiveData
-    implementation "android.arch.lifecycle:extensions:1.1.1"
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
     // alternatively, just ViewModel
-    implementation "android.arch.lifecycle:viewmodel:1.1.1"
+    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.2.0'
     // alternatively, just LiveData
-    implementation "android.arch.lifecycle:livedata:1.1.1"
+    implementation 'androidx.lifecycle:lifecycle-livedata:2.2.0'
 
-    annotationProcessor "android.arch.lifecycle:compiler:1.1.1"
+    //noinspection LifecycleAnnotationProcessorWithJava8
+    annotationProcessor 'androidx.lifecycle:lifecycle-compiler:2.2.0'
 
     // Room (use 1.1.0-alpha2 for latest alpha)
-    implementation "android.arch.persistence.room:runtime:1.1.1"
-    annotationProcessor "android.arch.persistence.room:compiler:1.1.1"
+    implementation 'androidx.room:room-runtime:2.2.5'
+    annotationProcessor 'androidx.room:room-compiler:2.2.5'
 
     // GSON
-    compile 'com.google.code.gson:gson:2.8.2'
+    implementation 'com.google.code.gson:gson:2.8.5'
 
     // RETROFIT
-    compile 'com.squareup.retrofit2:retrofit:2.4.0'
-    compile 'com.squareup.retrofit2:converter-gson:2.4.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.4.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
 
     // DAGGER 2
     implementation 'com.google.dagger:dagger-android:2.17'
@@ -59,8 +60,8 @@ dependencies {
     annotationProcessor 'com.google.dagger:dagger-compiler:2.17'
 
     // BUTTERKNIFE
-    compile 'com.jakewharton:butterknife:8.8.1'
-    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
+    implementation 'com.jakewharton:butterknife:10.0.0'
+    annotationProcessor 'com.jakewharton:butterknife-compiler:10.0.0'
 
     // GLIDE
     implementation 'com.github.bumptech.glide:glide:4.8.0'

app/src/androidTest/java/com/boisneyphilippe/githubarchitecturecomponents/db/DbTest.java

@@ -17,8 +17,8 @@
 package com.boisneyphilippe.githubarchitecturecomponents.db;
 
 
-import android.arch.persistence.room.Room;
-import android.support.test.InstrumentationRegistry;
+import androidx.room.Room;
+import androidx.test.platform.app.InstrumentationRegistry;
 
 import com.boisneyphilippe.githubarchitecturecomponents.database.MyDatabase;
 
@@ -30,7 +30,7 @@ abstract public class DbTest {
 
     @Before
     public void initDb() {
-        db = Room.inMemoryDatabaseBuilder(InstrumentationRegistry.getContext(),
+        db = Room.inMemoryDatabaseBuilder(InstrumentationRegistry.getInstrumentation().getContext(),
                 MyDatabase.class).build();
     }
 

app/src/androidTest/java/com/boisneyphilippe/githubarchitecturecomponents/db/UserDaoTest.java

@@ -1,11 +1,8 @@
 package com.boisneyphilippe.githubarchitecturecomponents.db;
 
-import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import com.boisneyphilippe.githubarchitecturecomponents.database.entity.User;
-import com.boisneyphilippe.githubarchitecturecomponents.db.DbTest;
 import com.boisneyphilippe.githubarchitecturecomponents.utils.LiveDataTestUtil;
 
 import org.junit.Test;
@@ -15,7 +12,6 @@
 
 import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.MatcherAssert.assertThat;
-import static org.junit.Assert.*;
 
 /**
  * Instrumented test, which will execute on an Android device.

app/src/androidTest/java/com/boisneyphilippe/githubarchitecturecomponents/utils/LiveDataTestUtil.java

@@ -1,8 +1,11 @@
 package com.boisneyphilippe.githubarchitecturecomponents.utils;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.lifecycle.Observer;
-import android.support.annotation.Nullable;
+import android.os.Handler;
+import android.os.Looper;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.Observer;
+import androidx.annotation.Nullable;
 
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
@@ -23,7 +26,12 @@ public void onChanged(@Nullable T o) {
                 liveData.removeObserver(this);
             }
         };
-        liveData.observeForever(observer);
+        new Handler(Looper.getMainLooper()).post(new Runnable() {
+            @Override
+            public void run() {
+                liveData.observeForever(observer);
+            }
+        });
         latch.await(2, TimeUnit.SECONDS);
         //noinspection unchecked
         return (T) data[0];

app/src/main/java/com/boisneyphilippe/githubarchitecturecomponents/activities/MainActivity.java

@@ -1,7 +1,7 @@
 package com.boisneyphilippe.githubarchitecturecomponents.activities;
 
-import android.support.v4.app.Fragment;
-import android.support.v7.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;
 
 import com.boisneyphilippe.githubarchitecturecomponents.R;
@@ -10,7 +10,6 @@
 import javax.inject.Inject;
 
 import dagger.android.AndroidInjection;
-import dagger.android.AndroidInjector;
 import dagger.android.DispatchingAndroidInjector;
 import dagger.android.support.HasSupportFragmentInjector;