flutter/examples/hello_android

Example of building a Flutter app for Android using Gradle

This project demonstrates how to embed Flutter within an Android application and build the Android and Flutter components with Gradle.

To build this project:

• Create a local.properties file with these entries:
  • sdk.dir=[path to the Android SDK]
  • flutter.sdk=[path to the Flutter SDK]
  • flutter.jar=[path to the flutter.jar file in your build of the Flutter engine]

Then run:

• gradle wrapper
• ./gradlew build

Updating the Dart code

You can push new Dart code to a Flutter app during development without performing a full rebuild of the Android app package.

The flutter refresh tool manages this process. flutter refresh will build a snapshot of an app's Dart code, copy it to an Android device, and send an intent instructing the Android app to load the snapshot.

To try this out:

• Install and run this app on your device
• Edit the Dart code in app/src/flutter/lib
• cd app/src/flutter
• flutter refresh --activity com.example.flutter/.ExampleActivity

flutter refresh sends an ACTION_RUN intent with an extra containing the device filesystem path where the snapshot was copied. ExampleActivity.java shows how an activity can handle this intent and load the new snapshot into a Flutter view.