我目前正在Flutter开发一个Android应用程序。我如何添加一个圆形按钮?
当前回答
在Null安全之后,使用ElevatedButton而不是RaisedButton,因为RaisedButton就像文档中说的那样被贬低了。
child: ElevatedButton(
onPressed: () {},
child: const Text('Add item to the list'),
style: ButtonStyle(
backgroundColor:
MaterialStateProperty.all<Color>(Common.buttonColor),
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
),
),
),
),
其他回答
你也可以使用ButtonTheme():
下面是示例代码
ButtonTheme(
minWidth: 200.0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(color: Colors.green)),
child: RaisedButton(
elevation: 5.0,
hoverColor: Colors.green,
color: Colors.amber,
child: Text(
"Place Order",
style: TextStyle(
color: Colors.white, fontWeight: FontWeight.bold),
),
onPressed: () {},
),
),
新的提升按钮
风格
customElevatedButton({radius, color}) => ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(radius == null ? 100 : radius),
),
primary: color,
);
Icon
Widget saveIcon() => iconsStyle1(
Icons.save,
);
// Common icon style
iconsStyle1(icon) => Icon(
icon,
color: white,
size: 15,
);
按钮使用
ElevatedButton.icon(
icon: saveIcon(),
style:
customElevatedButton(color: Colors.green[700]),
label: Text('Save',
style: TextStyle(color: Colors.white)),
onPressed: () {
},
),
如果你想使用MaterialButton,
=======================================
你可以添加RoundedRectangleBorder,就像这样,
MaterialButton(
onPressed: () {},
minWidth: MediaQuery.of(context).size.width * 0.4,
height: 34,
color: colorWhite,
highlightColor: colorSplash,
splashColor: colorSplash,
visualDensity: VisualDensity.compact,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(4),
side: BorderSide(
color: colorGrey,
width: 0.6,
),
),
child: Text("CANCEL"),
),
如果有人正在寻找完整的圆形按钮,那么我实现它的方式:
Center(
child: SizedBox.fromSize(
size: Size(80, 80), // Button width and height
child: ClipOval(
child: Material(
color: Colors.pink[300], // Button color
child: InkWell(
splashColor: Colors.yellow, // splash color
onTap: () {}, // Button pressed
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Icon(Icons.linked_camera), // Icon
Text("Picture"), // Text
],
),
),
),
),
),
)
现在我们有一个图标按钮来实现圆形按钮点击和覆盖。但是,背景颜色还不可用,但同样可以通过Circle头像小部件实现,如下所示:
CircleAvatar(
backgroundColor: const Color(0xffF4F3FA),
child: IconButton(
onPressed: () => FlushbarHelper.createInformation(
message: 'Work in progress...')
.show(context),
icon: Icon(Icons.more_vert),
),
),