Gesture handlers

Gesture handlers Flutter project.

Provide reusable gesture handler and Support interactive transitions between routes (i.e., controlled by gesture).

Preview

Installation

Add gesture_handlers as a dependency in your pubspec.yaml file.

flutter pub add gesture_handlers

Import it in your Dart code

import 'package:gesture_handlers/gesture_handlers.dart';

Usage

Basic usage

Initialize concrete GestureHandler implementation.

final tapHandler = TapHandlerDelegate(onTap: () => print('tap handled'));

Pass handler to GestureListener.

@override
Widget build(BuildContext context) {
  return GestureListener(
    handler: tapHandler,
    child: Scaffold(body: Center(child: Text('Tap'))),
  );
}

Dispose it at the end.

@override
void dispose() {
  tapHandler.dispose();
  super.dispose();
}

Route gesture transition

• Initialize NavigatorGesturesFlutterBinding or use your own NavigatorGesturesBinding implementation for prevent route GestureHandler active pointers canceling by NavigatorState.

import 'package:gesture_handlers/gesture_handlers.dart';

void main() {
  /// Prints information about preventing cancel pointer with [GestureBinding.cancelPointer].
  // debugPrintPreventCancelPointer = true;

  NavigatorGesturesFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

• Initialize SwipeRouteHandler or your own GestureRouteDelegate implementation.
• Use GestureModalBottomSheetRoute, MaterialGesturePageRoute or create custom gesture route with GestureRouteTransitionMixin.