flutter之Dismissible組件

/**
 *  滑動刪除
 *
 * const Dismissible({
    @required Key key,//
    @required this.child,//
    this.background,
    //滑動時組件下一層顯示的內容，沒有設置secondaryBackground時，從右往左或者從左往右滑動都顯示該內容，設置了secondaryBackground后，從左往右滑動顯示該內容，從右往左滑動顯示secondaryBackground的內容
    //secondaryBackground不能單獨設置，只能在已經設置了background后才能設置，從右往左滑動時顯示
    this.secondaryBackground,//
    this.onResize,//組件大小改變時回調
    this.onDismissed,//組件消失后回調
    this.direction = DismissDirection.horizontal,//
    this.resizeDuration = const Duration(milliseconds: 300),//組件大小改變的時長
    this.dismissThresholds = const <DismissDirection, double>{},//
    this.movementDuration = const Duration(milliseconds: 200),//組件消失的時長
    this.crossAxisEndOffset = 0.0,//
    })
 */

Dismissible(
  key: Key('a${index}'),
  secondaryBackground: Container(
    child: Text('左滑刪除', style: TextStyle(fontSize: Screen.width(32), color: Colors.white)),
    color: Colors.red,
    padding: EdgeInsets.only(right: Screen.width(10)),
    alignment: Alignment.centerRight,
  ),
  background: Container(
      child: Text('右滑刪除', style: TextStyle(fontSize: Screen.width(32), color: Colors.white)),
      color: Colors.red,
      padding: EdgeInsets.only(left: Screen.width(10)),
      alignment: Alignment.centerLeft,
  ),
  onDismissed: (direction) {
    print('onDismissed');
  },
  child:
),