【第8章 通过自定义 Recognizer 解决手势冲突】勘误

[chawson]

class CustomTapGestureRecognizer extends TapGestureRecognizer {
  @override
  void rejectGesture(int pointer) {
    // Pointer事件触发Pan/TouchMove时，Tap事件的状态为possible，此时需rejectGesture
    // 否则拖动后再点按，this.onTap将不会触发，并抛出异常
    if (state == GestureRecognizerState.possible) {
      return super.rejectGesture(pointer);
    }
    super.acceptGesture(pointer);
  }
}