当在listview中嵌套Griview组件的时候,千万别忘记给Griview外层的Container添加高度哦
··· body: ListView( children: [ // 导航条 Container( height: 180, //new line padding: EdgeInsets.only(top:10 ), child: GridView.count( crossAxisCount: 4, mainAxisspacing: 10, … ···