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
addButton() {
return Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: const EdgeInsets.symmetric(vertical: 10.0),
child: SizedBox(
height: 45,
width: 200,
child: ElevatedButton.icon(
onPressed: () async {},
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
)),
elevation: MaterialStateProperty.all(1),
backgroundColor: MaterialStateProperty.all(Colors.blue),
),
icon: Icon(Icons.add, size: 18),
label: Text("Add question"),
),
),
),
],
);
}
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: () {},
),
),
圆边颜色容器:
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
border: Border.all(color: Colors.red),
),
child: Text("Some Text"),
)
您可以简单地使用RaisedButton
Padding(
padding: EdgeInsets.only(left: 150.0, right: 0.0),
child: RaisedButton(
textColor: Colors.white,
color: Colors.black,
child: Text("Search"),
onPressed: () {},
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(30.0),
),
),
)
输出:
更多信息:RSCoder
试试这个:
SizedBox(
height: 40.0,
child: MaterialButton(
child: Text("Button"),
color: Colors.blue,
disabledColor: Colors.blue,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(
Radius.circular(10.0), // Change your border radius here
),
),
onPressed: () {},
),
),
在新的更新颤振3.0颤振使用材料3指南。
根据它,按钮的默认边框被四舍五入。
默认按钮
ElevatedButton(
onPressed: () {}, child: const Text("Default Button ")),
边界半径为零的按钮
ElevatedButton(
style: ElevatedButton.styleFrom(
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.zero)),
onPressed: () {},
child: const Text("Border Radius Zero ")),
带有自定义边界半径的按钮
ElevatedButton(
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50))),
onPressed: () {},
child: const Text("Border Radius Custom ")),
注意:你可以对FilledButton, TextButton等使用相同的逻辑。
按钮样式请参考https://m3.material.io/components/all-buttons。