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What's Add2App project?(Flutter)
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kosuke matsumura
March 26, 2019
Technology
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1.3k
What's Add2App project?(Flutter)
About Flutter Add2App project.
How to use Flutter from existing Android/iOS project.
kosuke matsumura
March 26, 2019
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Transcript
What’s Add2App project Flutter Meetup Tokyo #8 2019/3/26 Kosuke Matsumura
About Me • দଜߤ༟(Kosuke Matsumura) • NAVITIME JAPAN Co., Ltd.
Android/iOS Developer • Kawasaki Frontale Supporter • Twitter m.kosuke @kosuke_mtm
Add2App project
Add2App project • Make it easy to add Flutter on
existing application • In preview(as of 2019.3.17) • Available in master channel
OUTLINE
OUTLINE Standard Flutter Project Add2App Project Existing Android/iOS project should
import Flutter project as a module. Flutter project includes Android/iOS project from the beginning. Import with CocoaPods Import with cradle
OUTLINE $ flutter --version Flutter 1.3.11-pre.34 • channel master Framework
• 2019-03-15 22:03:13 -0700 Tools • Dart 2.2.1 (build 2.2.1-dev.1.0 None) Execution environment Warning: https://github.com/flutter/flutter/wiki/Bad-Builds
OUTLINE $ flutter --version Flutter 1.3.11-pre.34 • channel master Framework
• 2019-03-15 22:03:13 -0700 Tools • Dart 2.2.1 (build 2.2.1-dev.1.0 None) Execution environment Warning: https://github.com/flutter/flutter/wiki/Bad-Builds
SETUP
SETUP Create “Flutter module” $ flutter channel master $ flutter
create -t module my_flutter `-t` option is `template`. This command create the Flutter module project template. Existing Android/iOS project will import this module. set branch to `master`
SETUP Create “Flutter module” $ flutter create -t module my_flutter
In the Flutter module project, there are hidden subfolder: `.android/` and `.ios/`
SETUP -Android-
SETUP -Android- Add compile option: using java1.8 build.gradle android {
compileOptions { sourceCompatibility 1.8 targetCompatibility 1.8 } …
SETUP -Android- Add path to the Flutter module project setting.gradle
include ':app' // add below setBinding(new Binding([gradle: this])) evaluate(new File( settingsDir.parentFile, 'my_flutter/.android/include_flutter.groovy' ))
SETUP -Android- Introduce an implementation dependency on the Flutter module
from app app/build.gradle dependencies { implementation project(‘:flutter') … }
SETUP -Android- [optional] Apply AndroidX to the Flutter module project
ɾExecute on Android Project(not Flutter module project) ɾYou should correct import manually
SETUP -iOS-
SETUP -iOS- Setup Podfile ※If you don’t have Podfile, execute
`pod init` Podfile flutter_application_path = ‘../my_flutter/‘ eval(File.read( File.join(flutter_application_path, ‘.ios’, ‘Flutter’, ‘podhelper.rb’)), binding) And execute `pod install`
SETUP -iOS- Disable bitcode As Flutter does not support bitcode
now.
SETUP -iOS- Add a build phase for building Dart code
SETUP -iOS- Add a build phase for building Dart code
Run Script “$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh” build “$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed
SETUP -iOS- Add a build phase for building Dart code
Drag after `Target Dependencies`
USING in Native Code
USING -Android-
USING -Android- As a View MainActivity.kt val flutterView = Flutter.createView(
this, // Activity lifecycle, // Lifecycle "route1" ) Talk about this later
USING -Android- As a Fragment MainActivity.kt val transaction = supportFragmentManager.beginTransaction()
transaction.replace(R.id.container, Flutter.createFragment(“route2”)) transaction.commit() What is “route”?
What is “route”? Dart code is able to receive String
main.dar void main() => runApp(_widgetForRoute(window.defaultRouteName)); Widget _widgetForRoute(String route) { switch (route) { case 'route1': return SomeWidget(…); case 'route2': return SomeWidget(…); default: return Center(child: Text('Unknown route: $route')); } }
USING -iOS-
USING -iOS- AppDelegate.swift import Flutter Replace super class with `FlutterAppDelegate`
} FlutterAppDelegate.swift @interface FlutterAppDelegate: UIResponder <UIApplicationDelegate, …> @UIApplicationMain class AppDelegate: FlutterAppDelegate {
USING -iOS- AppDelegate.swift import Flutter Case of using Flutter plugin
} @UIApplicationMain class AppDelegate: FlutterAppDelegate {
USING -iOS- AppDelegate.swift import Flutter Case of using Flutter plugin
@UIApplicationMain class AppDelegate: FlutterAppDelegate { import FlutterPluginRegistrant var flutterEngine: FlutterEngine? override func application(_ application: UIApplication,didFinishLaunching… { self.flutterEngine = FlutterEngine(name: "io.flutter", project: nil) self.flutterEngine?.run(withEntrypoint: nil) GeneratedPluginRegistrant.register(with: self.flutterEngine) return super.application(application, didFinishLaunchingWithOptions:… }
USING -iOS- ViewController.swift let flutterViewController = FlutterViewController() flutterViewController.setInitialRoute(“route3") present(flutterViewController, animated:
false, completion: nil) Call Flutter from ViewController
Back to NativeCode
Back to NativeCode main.dart SystemNavigator.pop(); Call Flutter from ViewController
Hot Reload
Hot Reload $ cd xxxxx/my_flutter $ flutter attach IDE Support
Hot Reload for Add2App is in progress. But Flutter command line tools are already present.
Hot Reload IDE Support Hot Reload for Add2App is in
progress. But Flutter command line tools are already present. Dart Observatory web user interface URL
Hot Reload IDE Support Hot Reload for Add2App is in
progress. But Flutter command line tools are already present. Dart Observatory web user interface URL
Method Channel
Method Channel • Official https://flutter.dev/docs/development/platform-integration/ platform-channels • Qiita https://qiita.com/mkosuke/items/ b384035e507ad0208c10
Thank you for your attention.
References • Add2App project https://github.com/flutter/flutter/wiki/Add-Flutter-to-existing-apps • github https://github.com/flutter/flutter/projects/28 • Google
Developer blog https://developers.googleblog.com/2018/12/flutter-10-googles-portable-ui- toolkit.html • gitHub https://github.com/shcahill/Add2AppSample