GestureRecognizer constructor

GestureRecognizer({
  1. Object? debugOwner,
  2. Set<PointerDeviceKind>? supportedDevices,
  3. AllowedButtonsFilter allowedButtonsFilter = _defaultButtonAcceptBehavior,
})

Initializes the gesture recognizer.

The argument is optional and is only used for debug purposes (e.g. in the toString serialization).

It's possible to limit this recognizer to a specific set of PointerDeviceKinds by providing the optional supportedDevices argument. If supportedDevices is null, the recognizer will accept pointer events from all device kinds.

Implementation

GestureRecognizer({
  this.debugOwner,
  this.supportedDevices,
  this.allowedButtonsFilter = _defaultButtonAcceptBehavior,
}) {
  // TODO(polina-c): stop duplicating code across disposables
  // https://github.com/flutter/flutter/issues/137435
  if (kFlutterMemoryAllocationsEnabled) {
    FlutterMemoryAllocations.instance.dispatchObjectCreated(
      library: 'package:flutter/gestures.dart',
      className: '$GestureRecognizer',
      object: this,
    );
  }
}