TextSelectionGestureDetector

TextSelectionGestureDetector 是一个文本选择的手势识别控件，和GestureDetector的区别是GestureDetector只能处理单击或者双击事件，而TextSelectionGestureDetector可以同时处理单击和双击事件。

TextSelectionGestureDetector(
  child: SelectableText('TextSelectionGestureDetector'),
  onTapDown: (TapDownDetails details) {
    print('onTapDown');
  },
)

onTapDown：单击事件

TextSelectionGestureDetector(
  child: SelectableText('TextSelectionGestureDetector'),
  onTapDown: (TapDownDetails details) {
    print('onTapDown');
  },
  onSingleTapUp: (TapUpDetails details) {
    print('onSingleTapUp');
  },
  onSingleTapCancel: () {
    print('onSingleTapCancel');
  },
  onSingleLongTapStart: (LongPressStartDetails details) {
    print('onSingleLongTapStart');
  },
  onSingleLongTapMoveUpdate: (LongPressMoveUpdateDetails details) {
    print('onSingleLongTapMoveUpdate');
  },
  onSingleLongTapEnd: (LongPressEndDetails details) {
    print('onSingleLongTapEnd');
  },
)

onSingleTapUp：单击抬起事件

onSingleTapCancel：单击取消事件

onSingleLongTapStart：长按开始事件

onSingleLongTapMoveUpdate：长按移动事件

onSingleLongTapEnd：长按结束事件

TextSelectionGestureDetector(
  child: SelectableText('TextSelectionGestureDetector'),
  onDoubleTapDown: (TapDownDetails details) {
    print('onDoubleTapDown');
  },
)

onDoubleTapDown：双击事件