Updated code and dependencies to build on Android Studio 3.2 (pre-androidx)

app/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.1'
+    compileSdkVersion 28
+    buildToolsVersion "28.0.3"
 
     defaultConfig {
         applicationId "com.example.android.sunshine"
-        minSdkVersion 14
-        targetSdkVersion 26
+        minSdkVersion 19
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -28,21 +28,28 @@ android {
 
 // Versions number variables are defined in the module build.gradle file
 dependencies {
-    compile "com.android.support:appcompat-v7:$support_version"
-    compile "com.android.support:recyclerview-v7:$support_version"
-    compile "com.android.support:preference-v7:$support_version"
-    compile "com.android.support.constraint:constraint-layout:$constraint_layout_version"
-    compile "com.firebase:firebase-jobdispatcher:$firebase_jobdispatcher_version"
-    compile "android.arch.lifecycle:runtime:$arch_version"
-    compile "android.arch.lifecycle:extensions:$arch_version"
-    annotationProcessor "android.arch.lifecycle:compiler:$arch_version"
-    compile "android.arch.persistence.room:runtime:$arch_version"
+    implementation "com.android.support:appcompat-v7:$support_version"
+    implementation "com.android.support:recyclerview-v7:$support_version"
+    implementation "com.android.support:preference-v7:$support_version"
+    implementation "com.android.support.constraint:constraint-layout:$constraint_layout_version"
+    implementation "com.firebase:firebase-jobdispatcher:$firebase_jobdispatcher_version"
+
+    // https://developer.android.com/topic/libraries/architecture/adding-components
+
+    // ViewModel and LiveData
+    implementation "android.arch.lifecycle:extensions:$arch_version"
+    implementation "android.arch.lifecycle:common-java8:$arch_version"
+    implementation "android.arch.persistence.room:runtime:$arch_version"
     annotationProcessor "android.arch.persistence.room:compiler:$arch_version"
 
-    // Instrumentation dependencies use androidTestCompile"
+    // optional - Test helpers for LiveData and Room
+    testImplementation "android.arch.core:core-testing:$arch_version"
+    testImplementation "android.arch.persistence.room:testing:$arch_version"
+
+    // Instrumentation dependencies use androidTestImplementation"
     // (as opposed to testCompile for local unit tests run in the JVM"
-    androidTestCompile "junit:junit:$junit_version"
-    androidTestCompile "com.android.support:support-annotations:$support_version"
-    androidTestCompile "com.android.support.test:runner:$support_test_version"
-    androidTestCompile "com.android.support.test:rules:$support_test_version"
+    androidTestImplementation "junit:junit:$junit_version"
+    androidTestImplementation "com.android.support:support-annotations:$support_version"
+    androidTestImplementation "com.android.support.test:runner:$support_test_version"
+    androidTestImplementation "com.android.support.test:rules:$support_test_version"
 }

app/src/main/java/com/example/android/sunshine/ui/detail/DetailActivity.java

@@ -15,10 +15,11 @@
  */
 package com.example.android.sunshine.ui.detail;
 
-import android.arch.lifecycle.LifecycleActivity;
+import android.arch.lifecycle.LifecycleOwner;
 import android.arch.lifecycle.ViewModelProviders;
 import android.databinding.DataBindingUtil;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 
 import com.example.android.sunshine.R;
 import com.example.android.sunshine.data.database.WeatherEntry;
@@ -32,7 +33,7 @@
 /**
  * Displays single day's forecast
  */
-public class DetailActivity extends LifecycleActivity {
+public class DetailActivity extends AppCompatActivity implements LifecycleOwner {
 
     public static final String WEATHER_ID_EXTRA = "WEATHER_ID_EXTRA";
 

app/src/main/java/com/example/android/sunshine/ui/list/MainActivity.java

@@ -15,10 +15,11 @@
  */
 package com.example.android.sunshine.ui.list;
 
-import android.arch.lifecycle.LifecycleActivity;
+import android.arch.lifecycle.LifecycleOwner;
 import android.arch.lifecycle.ViewModelProviders;
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
@@ -34,8 +35,9 @@
 /**
  * Displays a list of the next 14 days of forecasts
  */
-public class MainActivity extends LifecycleActivity implements
-        ForecastAdapter.ForecastAdapterOnItemClickHandler {
+public class MainActivity extends AppCompatActivity implements LifecycleOwner,
+                                                    ForecastAdapter.ForecastAdapterOnItemClickHandler
+                                                     {
 
     private ForecastAdapter mForecastAdapter;
     private RecyclerView mRecyclerView;

build.gradle

@@ -6,24 +6,25 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-beta2'
+        classpath 'com.android.tools.build:gradle:3.3.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
 }
 
-ext.arch_version = "1.0.0-alpha8"
-ext.support_version = "26.0.1"
-ext.constraint_layout_version = "1.1.0-beta1"
-ext.firebase_jobdispatcher_version = "0.7.0"
+ext.arch_version = "1.1.1"
+ext.support_version = "28.0.0"
+ext.constraint_layout_version = "1.1.3"
+ext.firebase_jobdispatcher_version = "0.8.5"
 ext.junit_version = "4.12"
 ext.support_test_version = "1.0.0"
 
 allprojects {
     repositories {
         jcenter()
         maven { url 'https://maven.google.com' }
+        google()
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-rc-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
+