Flutter 滑动删除

body: ListView.builder(
        itemCount: articleDatas.length,
        itemBuilder: (BuildContext context, int position) {
          return getRow(position);
        },
      ),

          final item = articleDatas[position];
          return Dismissible(
            // 滑动背景色
            background: new Container(color: Theme.of(context).primaryColor),
            // 设置key标识
            key: new Key(item.title),
            // 滑动回调
            onDismissed: (direction) {
              // 根据位置移除
              articleDatas.removeAt(position);
              //do something
              // 提示
              Scaffold.of(context).showSnackBar(SnackBar(content: Text("已移除")));
            },
            child: getRow(position),
          );