├── ios ├── Runner │ ├── Runner-Bridging-Header.h │ ├── Assets.xcassets │ │ ├── LaunchImage.imageset │ │ │ ├── LaunchImage.png │ │ │ ├── LaunchImage@2x.png │ │ │ ├── LaunchImage@3x.png │ │ │ ├── README.md │ │ │ └── Contents.json │ │ └── AppIcon.appiconset │ │ │ ├── Icon-App-20x20@1x.png │ │ │ ├── Icon-App-20x20@2x.png │ │ │ ├── Icon-App-20x20@3x.png │ │ │ ├── Icon-App-29x29@1x.png │ │ │ ├── Icon-App-29x29@2x.png │ │ │ ├── Icon-App-29x29@3x.png │ │ │ ├── Icon-App-40x40@1x.png │ │ │ ├── Icon-App-40x40@2x.png │ │ │ ├── Icon-App-40x40@3x.png │ │ │ ├── Icon-App-60x60@2x.png │ │ │ ├── Icon-App-60x60@3x.png │ │ │ ├── Icon-App-76x76@1x.png │ │ │ ├── Icon-App-76x76@2x.png │ │ │ ├── Icon-App-1024x1024@1x.png │ │ │ ├── Icon-App-83.5x83.5@2x.png │ │ │ └── Contents.json │ ├── AppDelegate.swift │ ├── Base.lproj │ │ ├── Main.storyboard │ │ └── LaunchScreen.storyboard │ └── Info.plist ├── Flutter │ ├── Debug.xcconfig │ ├── Release.xcconfig │ └── AppFrameworkInfo.plist ├── Runner.xcworkspace │ └── contents.xcworkspacedata ├── Runner.xcodeproj │ ├── project.xcworkspace │ │ └── contents.xcworkspacedata │ ├── xcshareddata │ │ └── xcschemes │ │ │ └── Runner.xcscheme │ └── project.pbxproj └── Podfile ├── android ├── gradle.properties ├── app │ ├── src │ │ ├── main │ │ │ ├── res │ │ │ │ ├── mipmap-hdpi │ │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-mdpi │ │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-xhdpi │ │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-xxhdpi │ │ │ │ │ └── ic_launcher.png │ │ │ │ ├── mipmap-xxxhdpi │ │ │ │ │ └── ic_launcher.png │ │ │ │ ├── values │ │ │ │ │ └── styles.xml │ │ │ │ └── drawable │ │ │ │ │ └── launch_background.xml │ │ │ ├── kotlin │ │ │ │ └── com │ │ │ │ │ └── example │ │ │ │ │ └── background │ │ │ │ │ ├── App.kt │ │ │ │ │ ├── Notifications.kt │ │ │ │ │ ├── LifecycleDetector.kt │ │ │ │ │ ├── MainActivity.kt │ │ │ │ │ └── BackgroundService.kt │ │ │ └── AndroidManifest.xml │ │ ├── debug │ │ │ └── AndroidManifest.xml │ │ └── profile │ │ │ └── AndroidManifest.xml │ └── build.gradle ├── gradle │ └── wrapper │ │ └── gradle-wrapper.properties ├── settings.gradle └── build.gradle ├── lib ├── background_main.dart ├── counter_service.dart ├── counter.dart ├── app_retain_widget.dart └── main.dart ├── .metadata ├── test └── widget_test.dart ├── README.md ├── .gitignore ├── pubspec.yaml └── pubspec.lock /ios/Runner/Runner-Bridging-Header.h: -------------------------------------------------------------------------------- 1 | #import "GeneratedPluginRegistrant.h" -------------------------------------------------------------------------------- /android/gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx1536M 2 | android.useAndroidX=true 3 | android.enableJetifier=true 4 | android.enableR8=true -------------------------------------------------------------------------------- /ios/Flutter/Debug.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig" 2 | #include "Generated.xcconfig" 3 | -------------------------------------------------------------------------------- /ios/Flutter/Release.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig" 2 | #include "Generated.xcconfig" 3 | -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-mdpi/ic_launcher.png: 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/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png: -------------------------------------------------------------------------------- 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/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ppicas/flutter-android-background/HEAD/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png -------------------------------------------------------------------------------- /ios/Runner.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /lib/background_main.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/cupertino.dart'; 2 | 3 | import 'counter_service.dart'; 4 | 5 | void backgroundMain() { 6 | WidgetsFlutterBinding.ensureInitialized(); 7 | 8 | CounterService.instance().startCounting(); 9 | } 10 | -------------------------------------------------------------------------------- /android/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sun Oct 18 11:40:19 CEST 2020 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip 7 | -------------------------------------------------------------------------------- /android/app/src/main/kotlin/com/example/background/App.kt: -------------------------------------------------------------------------------- 1 | package com.example.background 2 | 3 | import android.app.Application 4 | 5 | 6 | class App : Application() { 7 | override fun onCreate() { 8 | super.onCreate() 9 | registerActivityLifecycleCallbacks(LifecycleDetector.activityLifecycleCallbacks) 10 | } 11 | } -------------------------------------------------------------------------------- /.metadata: -------------------------------------------------------------------------------- 1 | # This file tracks properties of this Flutter project. 2 | # Used by Flutter tool to assess capabilities and perform upgrades etc. 3 | # 4 | # This file should be version controlled and should not be manually edited. 5 | 6 | version: 7 | revision: cc949a8e8b9cf394b9290a8e80f87af3e207dce5 8 | channel: beta 9 | 10 | project_type: app 11 | -------------------------------------------------------------------------------- /android/app/src/debug/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /android/app/src/profile/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md: -------------------------------------------------------------------------------- 1 | # Launch Screen Assets 2 | 3 | You can customize the launch screen with your own desired assets by replacing the image files in this directory. 4 | 5 | You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images. -------------------------------------------------------------------------------- /android/app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 6 | 7 | 10 | 11 | -------------------------------------------------------------------------------- /ios/Runner/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | import UIKit 2 | import Flutter 3 | 4 | @UIApplicationMain 5 | @objc class AppDelegate: FlutterAppDelegate { 6 | override func application( 7 | _ application: UIApplication, 8 | didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? 9 | ) -> Bool { 10 | GeneratedPluginRegistrant.register(with: self) 11 | return super.application(application, didFinishLaunchingWithOptions: launchOptions) 12 | } 13 | } 14 | -------------------------------------------------------------------------------- /android/app/src/main/res/drawable/launch_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 12 | 13 | -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "universal", 5 | "filename" : "LaunchImage.png", 6 | "scale" : "1x" 7 | }, 8 | { 9 | "idiom" : "universal", 10 | "filename" : "LaunchImage@2x.png", 11 | "scale" : "2x" 12 | }, 13 | { 14 | "idiom" : "universal", 15 | "filename" : "LaunchImage@3x.png", 16 | "scale" : "3x" 17 | } 18 | ], 19 | "info" : { 20 | "version" : 1, 21 | "author" : "xcode" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /lib/counter_service.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/foundation.dart'; 2 | 3 | import 'counter.dart'; 4 | 5 | class CounterService { 6 | factory CounterService.instance() => _instance; 7 | 8 | CounterService._internal(); 9 | 10 | static final _instance = CounterService._internal(); 11 | 12 | final _counter = Counter(); 13 | 14 | ValueListenable get count => _counter.count; 15 | 16 | void startCounting() { 17 | Stream.periodic(Duration(seconds: 1)).listen((_) { 18 | _counter.increment(); 19 | print('Counter incremented: ${_counter.count.value}'); 20 | }); 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /android/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | 3 | rootProject.name = 'FlutterAndroidBackgroundAndroid' 4 | 5 | def flutterProjectRoot = rootProject.projectDir.parentFile.toPath() 6 | 7 | def plugins = new Properties() 8 | def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins') 9 | if (pluginsFile.exists()) { 10 | pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) } 11 | } 12 | 13 | plugins.each { name, path -> 14 | def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile() 15 | include ":$name" 16 | project(":$name").projectDir = pluginDirectory 17 | } 18 | -------------------------------------------------------------------------------- /android/build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | ext.kotlin_version = '1.3.50' 3 | repositories { 4 | google() 5 | jcenter() 6 | } 7 | 8 | dependencies { 9 | classpath 'com.android.tools.build:gradle:4.1.0' 10 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 11 | } 12 | } 13 | 14 | allprojects { 15 | repositories { 16 | google() 17 | jcenter() 18 | } 19 | } 20 | 21 | rootProject.buildDir = '../build' 22 | subprojects { 23 | project.buildDir = "${rootProject.buildDir}/${project.name}" 24 | } 25 | subprojects { 26 | project.evaluationDependsOn(':app') 27 | } 28 | 29 | task clean(type: Delete) { 30 | delete rootProject.buildDir 31 | } 32 | -------------------------------------------------------------------------------- /lib/counter.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/cupertino.dart'; 2 | import 'package:flutter/foundation.dart'; 3 | import 'package:shared_preferences/shared_preferences.dart'; 4 | 5 | class Counter { 6 | Counter() { 7 | _readCount().then((count) => _count.value = count); 8 | } 9 | 10 | ValueNotifier _count = ValueNotifier(0); 11 | 12 | ValueListenable get count => _count; 13 | 14 | void increment() { 15 | _count.value++; 16 | _writeCount(_count.value); 17 | } 18 | 19 | Future _readCount() async { 20 | var prefs = await SharedPreferences.getInstance(); 21 | return prefs.getInt('Counter.count') ?? 0; 22 | } 23 | 24 | Future _writeCount(int count) async { 25 | var prefs = await SharedPreferences.getInstance(); 26 | return prefs.setInt('Counter.count', count); 27 | } 28 | } 29 | -------------------------------------------------------------------------------- /lib/app_retain_widget.dart: -------------------------------------------------------------------------------- 1 | import 'dart:io'; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'package:flutter/services.dart'; 5 | 6 | class AppRetainWidget extends StatelessWidget { 7 | const AppRetainWidget({Key key, this.child}) : super(key: key); 8 | 9 | final Widget child; 10 | 11 | final _channel = const MethodChannel('com.example/app_retain'); 12 | 13 | @override 14 | Widget build(BuildContext context) { 15 | return WillPopScope( 16 | onWillPop: () async { 17 | if (Platform.isAndroid) { 18 | if (Navigator.of(context).canPop()) { 19 | return true; 20 | } else { 21 | _channel.invokeMethod('sendToBackground'); 22 | return false; 23 | } 24 | } else { 25 | return true; 26 | } 27 | }, 28 | child: child, 29 | ); 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /ios/Flutter/AppFrameworkInfo.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | App 9 | CFBundleIdentifier 10 | io.flutter.flutter.app 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | App 15 | CFBundlePackageType 16 | FMWK 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | 1.0 23 | MinimumOSVersion 24 | 8.0 25 | 26 | 27 | -------------------------------------------------------------------------------- /test/widget_test.dart: -------------------------------------------------------------------------------- 1 | // This is a basic Flutter widget test. 2 | // 3 | // To perform an interaction with a widget in your test, use the WidgetTester 4 | // utility that Flutter provides. For example, you can send tap and scroll 5 | // gestures. You can also use WidgetTester to find child widgets in the widget 6 | // tree, read text, and verify that the values of widget properties are correct. 7 | 8 | import 'package:flutter/material.dart'; 9 | import 'package:flutter_test/flutter_test.dart'; 10 | 11 | import 'package:flutter_background/main.dart'; 12 | 13 | void main() { 14 | testWidgets('Counter increments smoke test', (WidgetTester tester) async { 15 | // Build our app and trigger a frame. 16 | await tester.pumpWidget(MyApp()); 17 | 18 | // Verify that our counter starts at 0. 19 | expect(find.text('0'), findsOneWidget); 20 | expect(find.text('1'), findsNothing); 21 | 22 | // Tap the '+' icon and trigger a frame. 23 | await tester.tap(find.byIcon(Icons.add)); 24 | await tester.pump(); 25 | 26 | // Verify that our counter has incremented. 27 | expect(find.text('0'), findsNothing); 28 | expect(find.text('1'), findsOneWidget); 29 | }); 30 | } 31 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # How to keep Flutter apps running in background on Android 2 | 3 | This is a sample project that acts as a companion for an article that I wrote talking about some techniques to keep Flutter apps running. If you are interested you can find the article here: https://medium.com/@ppicas/keep-flutter-running-background-on-android-6ffc85be0234 4 | 5 | ## App features 6 | 7 | This is simple Flutter app that when it's opened it will show a screen with a counter that it's incremented every second. The interesting thing is that the counter never stops counting. No matter if you remove the app from recent apps or Android system kills the process to reclaim more memory. The app always recovers from any situation and keeps counting. Just uninstall the app if you want to stop it. 8 | 9 | These are the techniques used by this project to keep Flutter running: 10 | 11 | - Use of `moveTaskToBack` to survive when back button is pressed. 12 | - Creation of a foreground service to increase process priority. 13 | - Start and stop a new Isolate to run Dart background code when `FlutterActivity` is destroyed. 14 | 15 | ## How to run the project 16 | 17 | - Follow [Get Started](https://flutter.dev/docs/get-started/install) tutorial and install Flutter 18 | - Start and Android emulator 19 | - Run the app from terminal with `flutter run` 20 | -------------------------------------------------------------------------------- /android/app/src/main/kotlin/com/example/background/Notifications.kt: -------------------------------------------------------------------------------- 1 | package com.example.background 2 | 3 | import android.app.Notification 4 | import android.app.NotificationChannel 5 | import android.app.NotificationManager 6 | import android.content.Context 7 | import android.os.Build 8 | import androidx.core.app.NotificationCompat 9 | 10 | object Notifications { 11 | const val NOTIFICATION_ID_BACKGROUND_SERVICE = 1 12 | 13 | private const val CHANNEL_ID_BACKGROUND_SERVICE = "background_service" 14 | 15 | fun createNotificationChannels(context: Context) { 16 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { 17 | val channel = NotificationChannel( 18 | CHANNEL_ID_BACKGROUND_SERVICE, 19 | "Background Service", 20 | NotificationManager.IMPORTANCE_DEFAULT 21 | ) 22 | val manager = 23 | context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager 24 | manager.createNotificationChannel(channel) 25 | } 26 | } 27 | 28 | fun buildForegroundNotification(context: Context): Notification { 29 | return NotificationCompat 30 | .Builder(context, CHANNEL_ID_BACKGROUND_SERVICE) 31 | .setSmallIcon(R.mipmap.ic_launcher) 32 | .setContentTitle("Background Service") 33 | .setContentText("Keeps app process on foreground.") 34 | .build() 35 | } 36 | } -------------------------------------------------------------------------------- /android/app/src/main/kotlin/com/example/background/LifecycleDetector.kt: -------------------------------------------------------------------------------- 1 | package com.example.background 2 | 3 | import android.app.Activity 4 | import android.app.Application 5 | import android.os.Bundle 6 | 7 | object LifecycleDetector { 8 | 9 | val activityLifecycleCallbacks: Application.ActivityLifecycleCallbacks = 10 | ActivityLifecycleCallbacks() 11 | 12 | var listener: Listener? = null 13 | 14 | var isActivityRunning = false 15 | private set 16 | 17 | interface Listener { 18 | 19 | fun onFlutterActivityCreated() 20 | 21 | fun onFlutterActivityDestroyed() 22 | 23 | } 24 | 25 | private class ActivityLifecycleCallbacks : Application.ActivityLifecycleCallbacks { 26 | override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) { 27 | if (activity is MainActivity) { 28 | isActivityRunning = true 29 | listener?.onFlutterActivityCreated() 30 | } 31 | } 32 | 33 | override fun onActivityDestroyed(activity: Activity) { 34 | if (activity is MainActivity) { 35 | isActivityRunning = false 36 | listener?.onFlutterActivityDestroyed() 37 | } 38 | } 39 | 40 | override fun onActivityStarted(activity: Activity) {} 41 | 42 | override fun onActivityStopped(activity: Activity) {} 43 | 44 | override fun onActivityResumed(activity: Activity) {} 45 | 46 | override fun onActivityPaused(activity: Activity) {} 47 | 48 | override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle?) {} 49 | } 50 | 51 | } -------------------------------------------------------------------------------- /lib/main.dart: -------------------------------------------------------------------------------- 1 | import 'dart:ui'; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'package:flutter/services.dart'; 5 | import 'package:flutter_background/app_retain_widget.dart'; 6 | import 'package:flutter_background/background_main.dart'; 7 | import 'package:flutter_background/counter_service.dart'; 8 | 9 | void main() { 10 | runApp(MyApp()); 11 | 12 | var channel = const MethodChannel('com.example/background_service'); 13 | var callbackHandle = PluginUtilities.getCallbackHandle(backgroundMain); 14 | channel.invokeMethod('startService', callbackHandle.toRawHandle()); 15 | 16 | CounterService.instance().startCounting(); 17 | } 18 | 19 | class MyApp extends StatelessWidget { 20 | @override 21 | Widget build(BuildContext context) { 22 | return MaterialApp( 23 | title: 'Flutter Background Demo', 24 | home: AppRetainWidget( 25 | child: MyHomePage(), 26 | ), 27 | ); 28 | } 29 | } 30 | 31 | class MyHomePage extends StatefulWidget { 32 | MyHomePage({Key key}) : super(key: key); 33 | 34 | @override 35 | _MyHomePageState createState() => _MyHomePageState(); 36 | } 37 | 38 | class _MyHomePageState extends State { 39 | @override 40 | Widget build(BuildContext context) { 41 | return Scaffold( 42 | appBar: AppBar( 43 | title: Text('Flutter Background Demo'), 44 | ), 45 | body: Center( 46 | child: ValueListenableBuilder( 47 | valueListenable: CounterService.instance().count, 48 | builder: (context, count, child) { 49 | return Text('Counting: $count'); 50 | }, 51 | ), 52 | ), 53 | ); 54 | } 55 | } 56 | -------------------------------------------------------------------------------- /android/app/src/main/kotlin/com/example/background/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.example.background 2 | 3 | import android.os.Bundle 4 | import io.flutter.embedding.android.FlutterActivity 5 | import io.flutter.embedding.engine.FlutterEngine 6 | import io.flutter.plugin.common.MethodChannel 7 | 8 | class MainActivity : FlutterActivity() { 9 | override fun onCreate(savedInstanceState: Bundle?) { 10 | super.onCreate(savedInstanceState) 11 | Notifications.createNotificationChannels(this) 12 | } 13 | 14 | override fun configureFlutterEngine(flutterEngine: FlutterEngine) { 15 | super.configureFlutterEngine(flutterEngine) 16 | 17 | val binaryMessenger = flutterEngine.dartExecutor.binaryMessenger 18 | 19 | MethodChannel(binaryMessenger, "com.example/background_service").apply { 20 | setMethodCallHandler { method, result -> 21 | if (method.method == "startService") { 22 | val callbackRawHandle = method.arguments as Long 23 | BackgroundService.startService(this@MainActivity, callbackRawHandle) 24 | result.success(null) 25 | } else { 26 | result.notImplemented() 27 | } 28 | } 29 | } 30 | 31 | MethodChannel(binaryMessenger, "com.example/app_retain").apply { 32 | setMethodCallHandler { method, result -> 33 | if (method.method == "sendToBackground") { 34 | moveTaskToBack(true) 35 | result.success(null) 36 | } else { 37 | result.notImplemented() 38 | } 39 | } 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /ios/Runner/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /ios/Runner/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | flutter_background 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | $(FLUTTER_BUILD_NAME) 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | $(FLUTTER_BUILD_NUMBER) 23 | LSRequiresIPhoneOS 24 | 25 | UILaunchStoryboardName 26 | LaunchScreen 27 | UIMainStoryboardFile 28 | Main 29 | UISupportedInterfaceOrientations 30 | 31 | UIInterfaceOrientationPortrait 32 | UIInterfaceOrientationLandscapeLeft 33 | UIInterfaceOrientationLandscapeRight 34 | 35 | UISupportedInterfaceOrientations~ipad 36 | 37 | UIInterfaceOrientationPortrait 38 | UIInterfaceOrientationPortraitUpsideDown 39 | UIInterfaceOrientationLandscapeLeft 40 | UIInterfaceOrientationLandscapeRight 41 | 42 | UIViewControllerBasedStatusBarAppearance 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Miscellaneous 2 | *.class 3 | *.log 4 | *.pyc 5 | *.swp 6 | .DS_Store 7 | .atom/ 8 | .buildlog/ 9 | .history 10 | .svn/ 11 | 12 | # IntelliJ related 13 | *.iml 14 | *.ipr 15 | *.iws 16 | .idea/ 17 | 18 | # The .vscode folder contains launch configuration and tasks you configure in 19 | # VS Code which you may wish to be included in version control, so this line 20 | # is commented out by default. 21 | #.vscode/ 22 | 23 | # Flutter/Dart/Pub related 24 | **/doc/api/ 25 | .dart_tool/ 26 | .flutter-plugins 27 | .flutter-plugins-dependencies 28 | .packages 29 | .pub-cache/ 30 | .pub/ 31 | /build/ 32 | 33 | # Android related 34 | **/android/**/gradle-wrapper.jar 35 | **/android/.gradle 36 | **/android/captures/ 37 | **/android/gradlew 38 | **/android/gradlew.bat 39 | **/android/local.properties 40 | **/android/**/GeneratedPluginRegistrant.java 41 | 42 | # iOS/XCode related 43 | **/ios/**/*.mode1v3 44 | **/ios/**/*.mode2v3 45 | **/ios/**/*.moved-aside 46 | **/ios/**/*.pbxuser 47 | **/ios/**/*.perspectivev3 48 | **/ios/**/*sync/ 49 | **/ios/**/.sconsign.dblite 50 | **/ios/**/.tags* 51 | **/ios/**/.vagrant/ 52 | **/ios/**/DerivedData/ 53 | **/ios/**/Icon? 54 | **/ios/**/Pods/ 55 | **/ios/**/.symlinks/ 56 | **/ios/**/profile 57 | **/ios/**/xcuserdata 58 | **/ios/.generated/ 59 | **/ios/Flutter/App.framework 60 | **/ios/Flutter/Flutter.framework 61 | **/ios/Flutter/Generated.xcconfig 62 | **/ios/Flutter/app.flx 63 | **/ios/Flutter/app.zip 64 | **/ios/Flutter/flutter_assets/ 65 | **/ios/Flutter/flutter_export_environment.sh 66 | **/ios/ServiceDefinitions.json 67 | **/ios/Runner/GeneratedPluginRegistrant.* 68 | 69 | # Exceptions to above rules. 70 | !**/ios/**/default.mode1v3 71 | !**/ios/**/default.mode2v3 72 | !**/ios/**/default.pbxuser 73 | !**/ios/**/default.perspectivev3 74 | !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages 75 | -------------------------------------------------------------------------------- /android/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 7 | 8 | 14 | 15 | 22 | 23 | 26 | 27 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 41 | 42 | 45 | 46 | 47 | -------------------------------------------------------------------------------- /android/app/build.gradle: -------------------------------------------------------------------------------- 1 | def localProperties = new Properties() 2 | def localPropertiesFile = rootProject.file('local.properties') 3 | if (localPropertiesFile.exists()) { 4 | localPropertiesFile.withReader('UTF-8') { reader -> 5 | localProperties.load(reader) 6 | } 7 | } 8 | 9 | def flutterRoot = localProperties.getProperty('flutter.sdk') 10 | if (flutterRoot == null) { 11 | throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.") 12 | } 13 | 14 | def flutterVersionCode = localProperties.getProperty('flutter.versionCode') 15 | if (flutterVersionCode == null) { 16 | flutterVersionCode = '1' 17 | } 18 | 19 | def flutterVersionName = localProperties.getProperty('flutter.versionName') 20 | if (flutterVersionName == null) { 21 | flutterVersionName = '1.0' 22 | } 23 | 24 | apply plugin: 'com.android.application' 25 | apply plugin: 'kotlin-android' 26 | apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" 27 | apply plugin: 'kotlin-android-extensions' 28 | 29 | android { 30 | compileSdkVersion 28 31 | 32 | sourceSets { 33 | main.java.srcDirs += 'src/main/kotlin' 34 | } 35 | 36 | lintOptions { 37 | disable 'InvalidPackage' 38 | } 39 | 40 | defaultConfig { 41 | // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). 42 | applicationId "com.example.background" 43 | minSdkVersion 16 44 | targetSdkVersion 28 45 | versionCode flutterVersionCode.toInteger() 46 | versionName flutterVersionName 47 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 48 | } 49 | 50 | buildTypes { 51 | release { 52 | // TODO: Add your own signing config for the release build. 53 | // Signing with the debug keys for now, so `flutter run --release` works. 54 | signingConfig signingConfigs.debug 55 | } 56 | } 57 | } 58 | 59 | flutter { 60 | source '../..' 61 | } 62 | 63 | dependencies { 64 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 65 | implementation "androidx.appcompat:appcompat:1.2.0" 66 | testImplementation 'junit:junit:4.13' 67 | androidTestImplementation 'androidx.test:runner:1.3.0' 68 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0' 69 | } 70 | -------------------------------------------------------------------------------- /ios/Runner/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | -------------------------------------------------------------------------------- /ios/Podfile: -------------------------------------------------------------------------------- 1 | # Uncomment this line to define a global platform for your project 2 | # platform :ios, '9.0' 3 | 4 | # CocoaPods analytics sends network stats synchronously affecting flutter build latency. 5 | ENV['COCOAPODS_DISABLE_STATS'] = 'true' 6 | 7 | project 'Runner', { 8 | 'Debug' => :debug, 9 | 'Profile' => :release, 10 | 'Release' => :release, 11 | } 12 | 13 | def parse_KV_file(file, separator='=') 14 | file_abs_path = File.expand_path(file) 15 | if !File.exists? file_abs_path 16 | return []; 17 | end 18 | pods_ary = [] 19 | skip_line_start_symbols = ["#", "/"] 20 | File.foreach(file_abs_path) { |line| 21 | next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ } 22 | plugin = line.split(pattern=separator) 23 | if plugin.length == 2 24 | podname = plugin[0].strip() 25 | path = plugin[1].strip() 26 | podpath = File.expand_path("#{path}", file_abs_path) 27 | pods_ary.push({:name => podname, :path => podpath}); 28 | else 29 | puts "Invalid plugin specification: #{line}" 30 | end 31 | } 32 | return pods_ary 33 | end 34 | 35 | target 'Runner' do 36 | use_frameworks! 37 | 38 | # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock 39 | # referring to absolute paths on developers' machines. 40 | system('rm -rf .symlinks') 41 | system('mkdir -p .symlinks/plugins') 42 | 43 | # Flutter Pods 44 | generated_xcode_build_settings = parse_KV_file('./Flutter/Generated.xcconfig') 45 | if generated_xcode_build_settings.empty? 46 | puts "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first." 47 | end 48 | generated_xcode_build_settings.map { |p| 49 | if p[:name] == 'FLUTTER_FRAMEWORK_DIR' 50 | symlink = File.join('.symlinks', 'flutter') 51 | File.symlink(File.dirname(p[:path]), symlink) 52 | pod 'Flutter', :path => File.join(symlink, File.basename(p[:path])) 53 | end 54 | } 55 | 56 | # Plugin Pods 57 | plugin_pods = parse_KV_file('../.flutter-plugins') 58 | plugin_pods.map { |p| 59 | symlink = File.join('.symlinks', 'plugins', p[:name]) 60 | File.symlink(p[:path], symlink) 61 | pod p[:name], :path => File.join(symlink, 'ios') 62 | } 63 | end 64 | 65 | # Prevent Cocoapods from embedding a second Flutter framework and causing an error with the new Xcode build system. 66 | install! 'cocoapods', :disable_input_output_paths => true 67 | 68 | post_install do |installer| 69 | installer.pods_project.targets.each do |target| 70 | target.build_configurations.each do |config| 71 | config.build_settings['ENABLE_BITCODE'] = 'NO' 72 | end 73 | end 74 | end 75 | -------------------------------------------------------------------------------- /pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: flutter_background 2 | description: A new Flutter project. 3 | 4 | # The following defines the version and build number for your application. 5 | # A version number is three numbers separated by dots, like 1.2.43 6 | # followed by an optional build number separated by a +. 7 | # Both the version and the builder number may be overridden in flutter 8 | # build by specifying --build-name and --build-number, respectively. 9 | # In Android, build-name is used as versionName while build-number used as versionCode. 10 | # Read more about Android versioning at https://developer.android.com/studio/publish/versioning 11 | # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. 12 | # Read more about iOS versioning at 13 | # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html 14 | version: 1.0.0+1 15 | 16 | environment: 17 | sdk: ">=2.1.0 <3.0.0" 18 | 19 | dependencies: 20 | flutter: 21 | sdk: flutter 22 | 23 | # The following adds the Cupertino Icons font to your application. 24 | # Use with the CupertinoIcons class for iOS style icons. 25 | cupertino_icons: ^1.0.0 26 | 27 | shared_preferences: ^0.5.12+2 28 | 29 | dev_dependencies: 30 | flutter_test: 31 | sdk: flutter 32 | 33 | 34 | # For information on the generic Dart part of this file, see the 35 | # following page: https://dart.dev/tools/pub/pubspec 36 | 37 | # The following section is specific to Flutter. 38 | flutter: 39 | 40 | # The following line ensures that the Material Icons font is 41 | # included with your application, so that you can use the icons in 42 | # the material Icons class. 43 | uses-material-design: true 44 | 45 | # To add assets to your application, add an assets section, like this: 46 | # assets: 47 | # - images/a_dot_burr.jpeg 48 | # - images/a_dot_ham.jpeg 49 | 50 | # An image asset can refer to one or more resolution-specific "variants", see 51 | # https://flutter.dev/assets-and-images/#resolution-aware. 52 | 53 | # For details regarding adding assets from package dependencies, see 54 | # https://flutter.dev/assets-and-images/#from-packages 55 | 56 | # To add custom fonts to your application, add a fonts section here, 57 | # in this "flutter" section. Each entry in this list should have a 58 | # "family" key with the font family name, and a "fonts" key with a 59 | # list giving the asset and other descriptors for the font. For 60 | # example: 61 | # fonts: 62 | # - family: Schyler 63 | # fonts: 64 | # - asset: fonts/Schyler-Regular.ttf 65 | # - asset: fonts/Schyler-Italic.ttf 66 | # style: italic 67 | # - family: Trajan Pro 68 | # fonts: 69 | # - asset: fonts/TrajanPro.ttf 70 | # - asset: fonts/TrajanPro_Bold.ttf 71 | # weight: 700 72 | # 73 | # For details regarding fonts from package dependencies, 74 | # see https://flutter.dev/custom-fonts/#from-packages 75 | -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "size" : "20x20", 5 | "idiom" : "iphone", 6 | "filename" : "Icon-App-20x20@2x.png", 7 | "scale" : "2x" 8 | }, 9 | { 10 | "size" : "20x20", 11 | "idiom" : "iphone", 12 | "filename" : "Icon-App-20x20@3x.png", 13 | "scale" : "3x" 14 | }, 15 | { 16 | "size" : "29x29", 17 | "idiom" : "iphone", 18 | "filename" : "Icon-App-29x29@1x.png", 19 | "scale" : "1x" 20 | }, 21 | { 22 | "size" : "29x29", 23 | "idiom" : "iphone", 24 | "filename" : "Icon-App-29x29@2x.png", 25 | "scale" : "2x" 26 | }, 27 | { 28 | "size" : "29x29", 29 | "idiom" : "iphone", 30 | "filename" : "Icon-App-29x29@3x.png", 31 | "scale" : "3x" 32 | }, 33 | { 34 | "size" : "40x40", 35 | "idiom" : "iphone", 36 | "filename" : "Icon-App-40x40@2x.png", 37 | "scale" : "2x" 38 | }, 39 | { 40 | "size" : "40x40", 41 | "idiom" : "iphone", 42 | "filename" : "Icon-App-40x40@3x.png", 43 | "scale" : "3x" 44 | }, 45 | { 46 | "size" : "60x60", 47 | "idiom" : "iphone", 48 | "filename" : "Icon-App-60x60@2x.png", 49 | "scale" : "2x" 50 | }, 51 | { 52 | "size" : "60x60", 53 | "idiom" : "iphone", 54 | "filename" : "Icon-App-60x60@3x.png", 55 | "scale" : "3x" 56 | }, 57 | { 58 | "size" : "20x20", 59 | "idiom" : "ipad", 60 | "filename" : "Icon-App-20x20@1x.png", 61 | "scale" : "1x" 62 | }, 63 | { 64 | "size" : "20x20", 65 | "idiom" : "ipad", 66 | "filename" : "Icon-App-20x20@2x.png", 67 | "scale" : "2x" 68 | }, 69 | { 70 | "size" : "29x29", 71 | "idiom" : "ipad", 72 | "filename" : "Icon-App-29x29@1x.png", 73 | "scale" : "1x" 74 | }, 75 | { 76 | "size" : "29x29", 77 | "idiom" : "ipad", 78 | "filename" : "Icon-App-29x29@2x.png", 79 | "scale" : "2x" 80 | }, 81 | { 82 | "size" : "40x40", 83 | "idiom" : "ipad", 84 | "filename" : "Icon-App-40x40@1x.png", 85 | "scale" : "1x" 86 | }, 87 | { 88 | "size" : "40x40", 89 | "idiom" : "ipad", 90 | "filename" : "Icon-App-40x40@2x.png", 91 | "scale" : "2x" 92 | }, 93 | { 94 | "size" : "76x76", 95 | "idiom" : "ipad", 96 | "filename" : "Icon-App-76x76@1x.png", 97 | "scale" : "1x" 98 | }, 99 | { 100 | "size" : "76x76", 101 | "idiom" : "ipad", 102 | "filename" : "Icon-App-76x76@2x.png", 103 | "scale" : "2x" 104 | }, 105 | { 106 | "size" : "83.5x83.5", 107 | "idiom" : "ipad", 108 | "filename" : "Icon-App-83.5x83.5@2x.png", 109 | "scale" : "2x" 110 | }, 111 | { 112 | "size" : "1024x1024", 113 | "idiom" : "ios-marketing", 114 | "filename" : "Icon-App-1024x1024@1x.png", 115 | "scale" : "1x" 116 | } 117 | ], 118 | "info" : { 119 | "version" : 1, 120 | "author" : "xcode" 121 | } 122 | } 123 | -------------------------------------------------------------------------------- /ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 32 | 33 | 39 | 40 | 41 | 42 | 43 | 44 | 54 | 56 | 62 | 63 | 64 | 65 | 66 | 67 | 73 | 75 | 81 | 82 | 83 | 84 | 86 | 87 | 90 | 91 | 92 | -------------------------------------------------------------------------------- /android/app/src/main/kotlin/com/example/background/BackgroundService.kt: -------------------------------------------------------------------------------- 1 | package com.example.background 2 | 3 | import android.app.Service 4 | import android.content.Context 5 | import android.content.Intent 6 | import android.os.IBinder 7 | import android.util.Log 8 | import androidx.core.content.ContextCompat 9 | import io.flutter.embedding.engine.FlutterEngine 10 | import io.flutter.embedding.engine.dart.DartExecutor 11 | import io.flutter.view.FlutterCallbackInformation 12 | import io.flutter.view.FlutterMain 13 | 14 | class BackgroundService : Service(), LifecycleDetector.Listener { 15 | 16 | private var flutterEngine: FlutterEngine? = null 17 | 18 | override fun onCreate() { 19 | super.onCreate() 20 | 21 | val notification = Notifications.buildForegroundNotification(this) 22 | startForeground(Notifications.NOTIFICATION_ID_BACKGROUND_SERVICE, notification) 23 | 24 | LifecycleDetector.listener = this 25 | } 26 | 27 | override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int { 28 | intent?.getLongExtra(KEY_CALLBACK_RAW_HANDLE, -1)?.let { callbackRawHandle -> 29 | if (callbackRawHandle != -1L) setCallbackRawHandle(callbackRawHandle) 30 | } 31 | 32 | if (!LifecycleDetector.isActivityRunning) { 33 | startFlutterNativeView() 34 | } 35 | 36 | return START_STICKY 37 | } 38 | 39 | override fun onDestroy() { 40 | super.onDestroy() 41 | LifecycleDetector.listener = null 42 | } 43 | 44 | override fun onBind(intent: Intent): IBinder? = null 45 | 46 | override fun onFlutterActivityCreated() { 47 | stopFlutterNativeView() 48 | } 49 | 50 | override fun onFlutterActivityDestroyed() { 51 | startFlutterNativeView() 52 | } 53 | 54 | private fun startFlutterNativeView() { 55 | if (flutterEngine != null) return 56 | 57 | Log.i("BackgroundService", "Starting FlutterEngine") 58 | 59 | getCallbackRawHandle()?.let { callbackRawHandle -> 60 | flutterEngine = FlutterEngine(this).also { engine -> 61 | val callbackInformation = 62 | FlutterCallbackInformation.lookupCallbackInformation(callbackRawHandle) 63 | 64 | engine.dartExecutor.executeDartCallback( 65 | DartExecutor.DartCallback( 66 | assets, 67 | FlutterMain.findAppBundlePath(), 68 | callbackInformation 69 | ) 70 | ) 71 | } 72 | } 73 | } 74 | 75 | private fun stopFlutterNativeView() { 76 | Log.i("BackgroundService", "Stopping FlutterEngine") 77 | flutterEngine?.destroy() 78 | flutterEngine = null 79 | } 80 | 81 | private fun getCallbackRawHandle(): Long? { 82 | val prefs = getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE) 83 | val callbackRawHandle = prefs.getLong(KEY_CALLBACK_RAW_HANDLE, -1) 84 | return if (callbackRawHandle != -1L) callbackRawHandle else null 85 | } 86 | 87 | private fun setCallbackRawHandle(handle: Long) { 88 | val prefs = getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE) 89 | prefs.edit().putLong(KEY_CALLBACK_RAW_HANDLE, handle).apply() 90 | } 91 | 92 | companion object { 93 | private const val SHARED_PREFERENCES_NAME = "com.example.BackgroundService" 94 | 95 | private const val KEY_CALLBACK_RAW_HANDLE = "callbackRawHandle" 96 | 97 | fun startService(context: Context, callbackRawHandle: Long) { 98 | val intent = Intent(context, BackgroundService::class.java).apply { 99 | putExtra(KEY_CALLBACK_RAW_HANDLE, callbackRawHandle) 100 | } 101 | ContextCompat.startForegroundService(context, intent) 102 | } 103 | } 104 | 105 | } 106 | -------------------------------------------------------------------------------- /pubspec.lock: -------------------------------------------------------------------------------- 1 | # Generated by pub 2 | # See https://dart.dev/tools/pub/glossary#lockfile 3 | packages: 4 | async: 5 | dependency: transitive 6 | description: 7 | name: async 8 | url: "https://pub.dartlang.org" 9 | source: hosted 10 | version: "2.5.0-nullsafety.1" 11 | boolean_selector: 12 | dependency: transitive 13 | description: 14 | name: boolean_selector 15 | url: "https://pub.dartlang.org" 16 | source: hosted 17 | version: "2.1.0-nullsafety.1" 18 | characters: 19 | dependency: transitive 20 | description: 21 | name: characters 22 | url: "https://pub.dartlang.org" 23 | source: hosted 24 | version: "1.1.0-nullsafety.3" 25 | charcode: 26 | dependency: transitive 27 | description: 28 | name: charcode 29 | url: "https://pub.dartlang.org" 30 | source: hosted 31 | version: "1.2.0-nullsafety.1" 32 | clock: 33 | dependency: transitive 34 | description: 35 | name: clock 36 | url: "https://pub.dartlang.org" 37 | source: hosted 38 | version: "1.1.0-nullsafety.1" 39 | collection: 40 | dependency: transitive 41 | description: 42 | name: collection 43 | url: "https://pub.dartlang.org" 44 | source: hosted 45 | version: "1.15.0-nullsafety.3" 46 | cupertino_icons: 47 | dependency: "direct main" 48 | description: 49 | name: cupertino_icons 50 | url: "https://pub.dartlang.org" 51 | source: hosted 52 | version: "1.0.0" 53 | fake_async: 54 | dependency: transitive 55 | description: 56 | name: fake_async 57 | url: "https://pub.dartlang.org" 58 | source: hosted 59 | version: "1.2.0-nullsafety.1" 60 | ffi: 61 | dependency: transitive 62 | description: 63 | name: ffi 64 | url: "https://pub.dartlang.org" 65 | source: hosted 66 | version: "0.1.3" 67 | file: 68 | dependency: transitive 69 | description: 70 | name: file 71 | url: "https://pub.dartlang.org" 72 | source: hosted 73 | version: "5.2.1" 74 | flutter: 75 | dependency: "direct main" 76 | description: flutter 77 | source: sdk 78 | version: "0.0.0" 79 | flutter_test: 80 | dependency: "direct dev" 81 | description: flutter 82 | source: sdk 83 | version: "0.0.0" 84 | flutter_web_plugins: 85 | dependency: transitive 86 | description: flutter 87 | source: sdk 88 | version: "0.0.0" 89 | intl: 90 | dependency: transitive 91 | description: 92 | name: intl 93 | url: "https://pub.dartlang.org" 94 | source: hosted 95 | version: "0.16.1" 96 | matcher: 97 | dependency: transitive 98 | description: 99 | name: matcher 100 | url: "https://pub.dartlang.org" 101 | source: hosted 102 | version: "0.12.10-nullsafety.1" 103 | meta: 104 | dependency: transitive 105 | description: 106 | name: meta 107 | url: "https://pub.dartlang.org" 108 | source: hosted 109 | version: "1.3.0-nullsafety.3" 110 | path: 111 | dependency: transitive 112 | description: 113 | name: path 114 | url: "https://pub.dartlang.org" 115 | source: hosted 116 | version: "1.8.0-nullsafety.1" 117 | path_provider_linux: 118 | dependency: transitive 119 | description: 120 | name: path_provider_linux 121 | url: "https://pub.dartlang.org" 122 | source: hosted 123 | version: "0.0.1+2" 124 | path_provider_platform_interface: 125 | dependency: transitive 126 | description: 127 | name: path_provider_platform_interface 128 | url: "https://pub.dartlang.org" 129 | source: hosted 130 | version: "1.0.3" 131 | path_provider_windows: 132 | dependency: transitive 133 | description: 134 | name: path_provider_windows 135 | url: "https://pub.dartlang.org" 136 | source: hosted 137 | version: "0.0.4+1" 138 | platform: 139 | dependency: transitive 140 | description: 141 | name: platform 142 | url: "https://pub.dartlang.org" 143 | source: hosted 144 | version: "2.2.1" 145 | plugin_platform_interface: 146 | dependency: transitive 147 | description: 148 | name: plugin_platform_interface 149 | url: "https://pub.dartlang.org" 150 | source: hosted 151 | version: "1.0.3" 152 | process: 153 | dependency: transitive 154 | description: 155 | name: process 156 | url: "https://pub.dartlang.org" 157 | source: hosted 158 | version: "3.0.13" 159 | shared_preferences: 160 | dependency: "direct main" 161 | description: 162 | name: shared_preferences 163 | url: "https://pub.dartlang.org" 164 | source: hosted 165 | version: "0.5.12+2" 166 | shared_preferences_linux: 167 | dependency: transitive 168 | description: 169 | name: shared_preferences_linux 170 | url: "https://pub.dartlang.org" 171 | source: hosted 172 | version: "0.0.2+2" 173 | shared_preferences_macos: 174 | dependency: transitive 175 | description: 176 | name: shared_preferences_macos 177 | url: "https://pub.dartlang.org" 178 | source: hosted 179 | version: "0.0.1+10" 180 | shared_preferences_platform_interface: 181 | dependency: transitive 182 | description: 183 | name: shared_preferences_platform_interface 184 | url: "https://pub.dartlang.org" 185 | source: hosted 186 | version: "1.0.4" 187 | shared_preferences_web: 188 | dependency: transitive 189 | description: 190 | name: shared_preferences_web 191 | url: "https://pub.dartlang.org" 192 | source: hosted 193 | version: "0.1.2+7" 194 | shared_preferences_windows: 195 | dependency: transitive 196 | description: 197 | name: shared_preferences_windows 198 | url: "https://pub.dartlang.org" 199 | source: hosted 200 | version: "0.0.1+1" 201 | sky_engine: 202 | dependency: transitive 203 | description: flutter 204 | source: sdk 205 | version: "0.0.99" 206 | source_span: 207 | dependency: transitive 208 | description: 209 | name: source_span 210 | url: "https://pub.dartlang.org" 211 | source: hosted 212 | version: "1.8.0-nullsafety.2" 213 | stack_trace: 214 | dependency: transitive 215 | description: 216 | name: stack_trace 217 | url: "https://pub.dartlang.org" 218 | source: hosted 219 | version: "1.10.0-nullsafety.1" 220 | stream_channel: 221 | dependency: transitive 222 | description: 223 | name: stream_channel 224 | url: "https://pub.dartlang.org" 225 | source: hosted 226 | version: "2.1.0-nullsafety.1" 227 | string_scanner: 228 | dependency: transitive 229 | description: 230 | name: string_scanner 231 | url: "https://pub.dartlang.org" 232 | source: hosted 233 | version: "1.1.0-nullsafety.1" 234 | term_glyph: 235 | dependency: transitive 236 | description: 237 | name: term_glyph 238 | url: "https://pub.dartlang.org" 239 | source: hosted 240 | version: "1.2.0-nullsafety.1" 241 | test_api: 242 | dependency: transitive 243 | description: 244 | name: test_api 245 | url: "https://pub.dartlang.org" 246 | source: hosted 247 | version: "0.2.19-nullsafety.2" 248 | typed_data: 249 | dependency: transitive 250 | description: 251 | name: typed_data 252 | url: "https://pub.dartlang.org" 253 | source: hosted 254 | version: "1.3.0-nullsafety.3" 255 | vector_math: 256 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