shake_gesture

This Flutter plugin detects shake gestures on Android and iOS.

Usage

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('ShakeGesture Example')),
      body: Center(

		// Here it is 👇
        child: ShakeGesture(
          onShake: () {
            ScaffoldMessenger.of(context).showSnackBar(
              const SnackBar(content: Text('Shake!')),
            );
          },
          child: const Center(
            child: OutlinedButton(
              onPressed: ShakeGestureTestHelperExtension.simulateShake,
              child: Text('Simulate Shake'),
            ),
          ),
        ),
		// The end.

      ),
    );
  }
}

Simulator

This package works in the iOS simulator.

To simulate a shake event in Android emulator, either play with the Sensor Manager, or add the following piece of code to your Activity:

class MainActivity: FlutterActivity() {

    override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
        if (keyCode == KeyEvent.KEYCODE_MENU) {
            this.flutterEngine?.plugins?.get(ShakeGesturePlugin::class.java).let { plugin ->
                if (plugin is ShakeGesturePlugin)
                    plugin.onShake()
            }
        }

        return super.onKeyDown(keyCode, event)
    }

}

Then, you can use ctrl+m or cmd+m (mac) to simulate a shake motion.

Test Helper

In order to simulate a shake gesture in a test, add the following package:

shake_gesture_test_helper

And call the shake method on your widgetTester:

    testWidgets('it detects shakes', (widgetTester) async {
      var shakeDetected = false;
      await widgetTester.pumpWidget(
        ShakeGesture(
          onShake: () {
            shakeDetected = true;
          },
          child: Container(),
        ),
      );
      await widgetTester.shake();
      expect(shakeDetected, true);
    });

Contribute

Test your contribution by running the unit tests and integration tests.

cd shake_gesture/example
flutter test
flutter test integration_test