我有一个带有线性渐变的容器,目的是成为我的应用程序的背景色。当我将“列”作为子级时,我的背景仅在列大小中起作用。剩余空间将变为空白。
我尝试将脚手架的背景色设置为透明,但这会将其变成黑色空间而不是白色空间
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: Container(
padding: EdgeInsets.all(32),
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
stops: [0.1, 0.9],
colors: [
HexColor("#2a4644"),
HexColor("#3c1630"),
],
),
),
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text('test')
],
)
),
);
}
}
以下是它的外观截图:http://prntscr.com/o64s1f
答案 0 :(得分:0)
您必须使用堆栈。容器应占据整个屏幕的宽度和高度。然后将列放在容器的前面。
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: Stack(
children: <Widget>[
Container(
width: double.infinity,
height: double.infinity,
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
stops: [0.1, 0.9],
colors: [
Color(0xFF2a4644),
Color(0xFF3c1630),
],
),
),
),
Padding(
padding: const EdgeInsets.all(32.0),
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text('test')
],
),
),
],
),
);
}