这个问题在这里发布,因为在Stack Overflow上相关的问题只有变通方法,没有直接解决方法。
您可以使用以下代码来实现这一点。
AppBar(
flexibleSpace: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [Colors.cyan, Colors.yellow], stops: [0.5, 1.0],
),
),
),
),
请查看来自yadunandan的bGVBVpz演示,它位于CodePen上,并由@iamyadunandan创建。
对于一个带有渐变背景和居中标题的简单应用栏,
AppBar(
automaticallyImplyLeading: false, // hides default back button
flexibleSpace: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topLeft,
end: Alignment.topRight,
colors: [
Color(0xffB1097C),
Color(0xff0947B1),
]),
)),
title: Text("WishList", style: TextStyle(fontSize: 20.0, color: Colors.white)),
centerTitle: true,
),
对于具有渐变背景和操作图标的更复杂的应用栏
AppBar(
automaticallyImplyLeading: false, // hides default back button
flexibleSpace: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topLeft,
end: Alignment.topRight,
colors: [
Color(0xffB1097C),
Color(0xff0947B1),
]),
)),
title: Text("Welcome guest", style: TextStyle(fontSize: 20.0, color: Colors.white)),
actions: [
IconButton(
icon: SvgPicture.asset("enter svg path",height: 20.0, width: 20.0),
onPressed: () {
print("Icon 1 pressed");
}),
IconButton(
icon: SvgPicture.asset("enter svg path", height: 20.0, width: 20.0),
onPressed: () {
print("Icon 2 pressed");
},
)
],
)