Flutter 之 ExpansionTiles 控件

ExpansionTile(
          //左边布局
          leading: Icon(Icons.android),
          title: Text("标题"),
          backgroundColor: Colors.grey,
          onExpansionChanged:(isExpand){
            print('isExpand====$isExpand');
          },
          children: <Widget>[
            ListTile(
              title: Text("展开的标题"),
              leading: Icon(Icons.android,color: Colors.white),
            ),
          ],
          //右边显示的Widget,而不是旋转的箭头
          //trailing:Text('trailing'),
          initiallyExpanded: false,//默认是否展开
        )