kyuqw / gesture_handlers

Reusable gesture handler and interactive transitions between routes

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.