我有一个个人资料页面布局,由头像图片的2和1分隔。我的羽绒容器颜色,无法设置,这似乎不起作用,为什么。这是下面的代码:
body: new Stack(
children: <Widget>[
new Column(
children: <Widget>[
new Container(
height: topWidgetHeight,
decoration: BoxDecoration(
image: new DecorationImage(image: new AssetImage("assets/9.jpg"),
fit: BoxFit.cover)
),
),
new Container(
color: Colors.red,
)
],
),
new Positioned(
child: new Container(
height: 150,
width: 150,
decoration: BoxDecoration(
image: new DecorationImage(image: new AssetImage("assets/0.jpg"),
fit: BoxFit.cover),
borderRadius: BorderRadius.all(Radius.circular(75.0)),
boxShadow: [
BoxShadow(blurRadius: 7.0, color: Colors.black)
],
),
),
left: (MediaQuery.of(context).size.width/2) - avatarRadius,
top: topWidgetHeight - avatarRadius,
)
],
)
没有出现容器,因为您没有给容器任何高度
请给它高度和宽度,然后尝试