在项目即时通讯中,使用了颤振卡内的图像和文本,但是卡返回固定的高度。然后我也尝试仅使用具有空值的卡,但它仍返回固定高度。我该怎么做才能使卡的高度随内容自动调整。
@override小部件build(BuildContext context){最终标题=“食品食谱”;返回MaterialApp(标题:标题,家:脚手架(appBar:AppBar(标题:文字(标题),)正文:GridView.builder(itemCount:_listViewData.length,gridDelegate:SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount:2),itemBuilder :(上下文,索引){退货卡(边距:const EdgeInsets.all(10.0),子:列(crossAxisAlignment:CrossAxisAlignment.start,儿童:[AspectRatio(宽高比:18.0 / 13.0,子:Image.network(_listViewDataImage [index],适合:BoxFit.fill,))填充(填充:EdgeInsets.fromLTRB(16.0,12.0,16.0,8.0),子:列(crossAxisAlignment:CrossAxisAlignment.start,儿童:[文本(_listViewData [index],textAlign:TextAlign.center,)],))],));}),));}
您想将您的卡包裹在Column中,因为内部Column占据了整个高度
Column(children: <Widget>[
Card(
margin: const EdgeInsets.all(10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
AspectRatio(
aspectRatio: 18.0 / 13.0,
child: Image.network(
"https://i.stack.imgur.com/mDkkT.png",
fit: BoxFit.fill,
),
),
Padding(
padding: EdgeInsets.fromLTRB(16.0, 12.0, 16.0, 8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"Demo",
textAlign: TextAlign.center,
),
],
),
),
],
),
)
])