SwipeDetector class

Detects user swipes.

Attempts to recognize swipes that correspond to its non-null callbacks.

Widget build(BuildContext context) {
  return Scaffold(
    body: SwipeDetector(
      onSwipe: (direction) {
        setState(() {
          _swipeHistory.insert(0, direction);
          if (_swipeHistory.length > _swipeHistoryLimit) {
            _swipeHistory.removeLast();
          }
        });
      },
      child: Container(
        color: Colors.yellow.shade600,
        padding: const EdgeInsets.all(16),
        child: const Text(
          'Swipe me!',
        ),
      ),
    ),
  );
}

{@end-tool}

Debugging

To see how large the hit test box of a SwipeDetector is for debugging purposes, set debugPaintPointersEnabled to true.

See also:

• GestureDetector, a widget that is used to detect gestures.