我使用颤动画廊作为示例构建自己的卡片,但是在设置形状时它表示参数形状未定义。我不确定这是怎么可能的,因为我在印象形状下是Card类的默认属性?如果这是一个非常简单的解决方案,我很新闻。我已经把它弄乱了几天了。
final ShapeBorder shape;
@override
Widget build(BuildContext context) {
return new SafeArea(
top: false,
bottom: false,
child: new Container(
padding: const EdgeInsets.all(8.0),
height: height,
child: new Card(
elevation: 8.0,
color: const Color(0xFFf0e7d1),
shape: shape, // The first shape is not defined, second is fine?
child: new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
new SizedBox(
height: 154.0,
child: new Stack(
children: <Widget>[
new Positioned.fill(
child: new Image.asset(
destination.assetName,
fit: BoxFit.cover,
),
),
new Positioned(
bottom: 16.0,
left: 16.0,
right: 16.0,
child: new FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.centerLeft,
child: new Text(
destination.title
),
),
),
],
),
),
好吧,事实证明你根本不需要一个大小的实现,所以我只是删除它,一切都很好!