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Merge pull request flutter#2673 from jason-simmons/gradle_example
Example that builds a Flutter Android app using Gradle
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‎examples/hello_android/README.md

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# Example of building a Flutter app for Android using Gradle
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This project demonstrates how to embed Flutter within an Android application
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and build the Android and Flutter components with Gradle.
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To build this project:
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* Create a `local.properties` file with these entries:
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* `sdk.dir=[path to the Android SDK]`
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* `flutter.sdk=[path to the Flutter SDK]`
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* `flutter.jar=[path to the flutter.jar file in your build of the Flutter engine]`
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Then run:
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* `gradle wrapper`
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* `./gradlew build`

‎examples/hello_android/app/build.gradle

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apply plugin: 'com.android.application'
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apply plugin: 'flutter'
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android {
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compileSdkVersion 22
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buildToolsVersion '22.0.1'
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lintOptions {
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disable 'InvalidPackage'
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}
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}
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flutter {
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source 'src/flutter'
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}

‎examples/hello_android/app/src/flutter/lib/main.dart

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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/widgets.dart';
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void main() => runApp(new Center(child: new Text('Hello from Flutter!')));

‎examples/hello_android/app/src/flutter/pubspec.yaml

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name: gradle
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dependencies:
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flutter:
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path: ../../../../../packages/flutter

‎examples/hello_android/app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.flutter"
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android:versionCode="1"
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android:versionName="1.0.0" >
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<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
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<uses-permission android:name="android.permission.INTERNET"/>
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<application android:name="org.domokit.sky.shell.SkyApplication" android:label="@string/app_name" >
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<activity
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android:name=".FlutterActivity"
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android:label="@string/app_name"
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android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
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android:launchMode="singleTask"
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android:theme="@android:style/Theme.Black.NoTitleBar"
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android:windowSoftInputMode="adjustResize">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎examples/hello_android/app/src/main/java/com/example/flutter/FlutterActivity.java

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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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package com.example.flutter;
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import android.app.Activity;
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import android.os.Bundle;
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import org.chromium.base.PathUtils;
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import org.domokit.sky.shell.SkyApplication;
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import org.domokit.sky.shell.SkyMain;
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import org.domokit.sky.shell.PlatformViewAndroid;
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import java.io.File;
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public class FlutterActivity extends Activity {
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private PlatformViewAndroid flutterView;
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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SkyMain.ensureInitialized(getApplicationContext(), null);
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setContentView(R.layout.flutter_layout);
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flutterView = (PlatformViewAndroid) findViewById(R.id.flutter_view);
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File appBundle = new File(PathUtils.getDataDirectory(this), SkyApplication.APP_BUNDLE);
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flutterView.runFromBundle(appBundle.getPath(), null);
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}
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@Override
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protected void onDestroy() {
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if (flutterView != null) {
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flutterView.destroy();
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}
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super.onDestroy();
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}
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}

‎examples/hello_android/app/src/main/res/layout/flutter_layout.xml

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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:orientation="vertical"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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>
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<TextView
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android:id="@+id/text_view"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:text="@string/title"
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/>
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<org.domokit.sky.shell.PlatformViewAndroid
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android:id="@+id/flutter_view"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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/>
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</LinearLayout>

‎examples/hello_android/app/src/main/res/values/strings.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<string name="app_name">Flutter App</string>
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<string name="title">Flutter Application</string>
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</resources>

‎examples/hello_android/build.gradle

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buildscript {
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repositories {
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jcenter()
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}
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dependencies {
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classpath 'com.android.tools.build:gradle:1.5.0'
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}
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}
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task clean(type: Delete) {
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delete rootProject.buildDir
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}
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task wrapper(type: Wrapper) {
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gradleVersion = '2.8'
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}

‎examples/hello_android/buildSrc/build.gradle

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repositories {
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jcenter()
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}
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dependencies {
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compile "com.android.tools.build:gradle:1.5.0"
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}

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