添加如下代码就可以实现系统提示性组建
RaisedButton( onPressed: (){ Scaffold.of(context).showBottomSheet( (BuildContext context) { return new Container( height: 100, child: Text('bottomsheet出现了'), ); }, backgroundColor:Colors.blue, elevation: 10, shape: RoundedRectangleBorder(), clipBehavior: Clip.antiAlias ); }, child: Text('点击显示BottomSheet'), ),