在 Flutter 中创建一个带有 border-radius 的圆角按钮/按钮
Create a rounded button / button with border-radius in Flutter
我目前正在 Flutter 中开发 Android 应用程序。如何添加圆形按钮?
您可以使用 ElevatedButton
小部件。提升的按钮小部件有一个 shape
属性,您可以使用它,如下面的代码片段所示。
ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(
color: Colors.teal,
width: 2.0,
),
),
),
),
child: Text('Submit'),
onPressed: () {},
),
您可以简单地使用 RaisedButton
or you can use InkWell
to get a custom button and also properties like onDoubleTap
, onLongPress
, etc.:
new InkWell(
onTap: () => print('hello'),
child: new Container(
//width: 100.0,
height: 50.0,
decoration: new BoxDecoration(
color: Colors.blueAccent,
border: new Border.all(color: Colors.white, width: 2.0),
borderRadius: new BorderRadius.circular(10.0),
),
child: new Center(child: new Text('Click Me', style: new TextStyle(fontSize: 18.0, color: Colors.white),),),
),
),
如果您想在 InkWell
小部件中使用 splashColor
和 highlightColor
属性,请使用 Material
widget as the parent of the InkWell
widget instead of decorating the container (deleting the decoration property). .
如果您使用 Material 应用程序作为主窗口小部件,则始终可以使用 material 按钮。
Padding(
padding: EdgeInsets.symmetric(vertical: 16.0),
child: Material(
borderRadius: BorderRadius.circular(30.0),//Set this up for rounding corners.
shadowColor: Colors.lightBlueAccent.shade100,
child: MaterialButton(
minWidth: 200.0,
height: 42.0,
onPressed: (){//Actions here//},
color: Colors.lightBlueAccent,
child: Text('Log in', style: TextStyle(color: Colors.white),),
),
),
)
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
您可以使用下面的代码制作一个带有渐变颜色的圆角按钮。
Container(
width: 130.0,
height: 43.0,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(30.0),
gradient: LinearGradient(
// Where the linear gradient begins and ends
begin: Alignment.topRight,
end: Alignment.bottomLeft,
// Add one stop for each color. Stops should increase from 0 to 1
stops: [0.1, 0.9],
colors: [
// Colors are easy thanks to Flutter's Colors class.
Color(0xff1d83ab),
Color(0xff0cbab8),
],
),
),
child: FlatButton(
child: Text(
'Sign In',
style: TextStyle(
fontSize: 16.0,
fontFamily: 'Righteous',
fontWeight: FontWeight.w600,
),
),
textColor: Colors.white,
color: Colors.transparent,
shape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(30.0)),
onPressed: () {
},
),
);
您可以将此代码用于透明圆形按钮,方法是将透明颜色传递给 BoxDecoration
内的颜色 属性。
例如。 color: Colors.transparent
。
另外,请注意此按钮仅使用 Container
和 GestureDetector
小部件。
Container(
height: 50.0,
child: GestureDetector(
onTap: () {},
child: Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xFFF05A22),
style: BorderStyle.solid,
width: 1.0,
),
color: Colors.transparent,
borderRadius: BorderRadius.circular(30.0),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Center(
child: Text(
"BUTTON",
style: TextStyle(
color: Color(0xFFF05A22),
fontFamily: 'Montserrat',
fontSize: 16,
fontWeight: FontWeight.w600,
letterSpacing: 1,
),
),
)
],
),
),
),
)
更新
由于 left-sided 按钮现已弃用,请使用 right-sided 按钮。
Deprecated --> Recommended
RaisedButton --> ElevatedButton
OutlineButton --> OutlinedButton
FlatButton --> TextButton
ElevatedButton
使用StadiumBorder
ElevatedButton(
onPressed: () {},
child: Text('Button'),
style: ElevatedButton.styleFrom(shape: StadiumBorder()),
)
使用RoundedRectangleBorder
ElevatedButton(
onPressed: () {},
child: Text('Button'),
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(12), // <-- Radius
),
),
)
使用CircleBorder
ElevatedButton(
onPressed: () {},
child: Text('Button'),
style: ElevatedButton.styleFrom(
shape: CircleBorder(),
padding: EdgeInsets.all(24),
),
)
使用BeveledRectangleBorder
ElevatedButton(
onPressed: () {},
child: Text('Button'),
style: ElevatedButton.styleFrom(
shape: BeveledRectangleBorder(
borderRadius: BorderRadius.circular(12)
),
),
)
OutlinedButton
使用StadiumBorder
OutlinedButton(
onPressed: () {},
child: Text('Button'),
style: OutlinedButton.styleFrom(
shape: StadiumBorder(),
),
)
使用RoundedRectangleBorder
OutlinedButton(
onPressed: () {},
child: Text('Button'),
style: OutlinedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(12),
),
),
)
使用CircleBorder
:
OutlinedButton(
onPressed: () {},
child: Text('Button'),
style: OutlinedButton.styleFrom(
shape: CircleBorder(),
padding: EdgeInsets.all(24),
),
)
使用BeveledRectangleBorder
OutlinedButton(
onPressed: () {},
child: Text('Button'),
style: OutlinedButton.styleFrom(
shape: BeveledRectangleBorder(
borderRadius: BorderRadius.circular(12),
),
),
)
文本按钮
TextButton
也类似于 ElevatedButton
和 OutlinedButton
,但是,您只能在按下按钮时看到形状。
1.解决方案总结
FlatButton
和 RaisedButton
已弃用。
所以,对于TextButton
和ElevatedButton
.
,你可以使用style
中的shape
自 Flutter 2.0 以来有一些变化:
style
: 属性 类型已更改为 ButtonStyle
shape
: 属性 类型已更改为 MaterialStateProperty<T>
2。圆形按钮
在 style
属性 中存在 shape
属性:
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red)
)
)
)
方形按钮
对于方形按钮,您可以使用 ElevatedButton
或以其他方式添加:
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.zero,
side: BorderSide(color: Colors.red)
)
)
)
完整示例
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
TextButton(
child: Text(
"Add to cart".toUpperCase(),
style: TextStyle(fontSize: 14)
),
style: ButtonStyle(
padding: MaterialStateProperty.all<EdgeInsets>(EdgeInsets.all(15)),
foregroundColor: MaterialStateProperty.all<Color>(Colors.red),
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red)
)
)
),
onPressed: () => null
),
SizedBox(width: 10),
ElevatedButton(
child: Text(
"Buy now".toUpperCase(),
style: TextStyle(fontSize: 14)
),
style: ButtonStyle(
foregroundColor: MaterialStateProperty.all<Color>(Colors.white),
backgroundColor: MaterialStateProperty.all<Color>(Colors.red),
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.zero,
side: BorderSide(color: Colors.red)
)
)
),
onPressed: () => null
)
]
)
In Flutter, the Container()
widget is used for styling your widget. Using the Container()
widget, you can set a border or rounded corner of any widget.
如果您想设置任何类型的样式并设置装饰,请将该小部件放入 Container()
小部件中。这为装饰提供了许多属性。
Container(
width: 100,
padding: EdgeInsets.all(10),
alignment: Alignment.center,
decoration: BoxDecoration(
color: Colors.blueAccent,
borderRadius: BorderRadius.circular(30)), // Make rounded corner
child: Text("Click"),
)
如果有人正在寻找完整的圆形按钮,那么我是这样实现的:
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
],
),
),
),
),
),
)
要在 按钮 中使用任何形状,请确保执行 Button 小部件内的所有代码:
**shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red) ),**
如果你想让它变成正方形,使用BorderRadius.circular(0.0)
它会自动变成正方形。
按钮是这样的:
这是给定 UI 屏幕的所有源代码:
Scaffold(
backgroundColor: Color(0xFF8E44AD),
body: new Center(
child: Column(
children: <Widget>[
Container(
margin: EdgeInsets.fromLTRB(90, 10, 20, 0),
padding: new EdgeInsets.only(top: 92.0),
child: Text(
"Currency Converter",
style: TextStyle(
fontSize: 48,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
),
Container(
margin: EdgeInsets.only(),
padding: EdgeInsets.all(25),
child: TextFormField(
decoration: new InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: "Amount",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
),
),
),
),
Container(
padding: EdgeInsets.all(25),
child: TextFormField(
decoration: new InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: "From",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
),
),
),
),
Container(
padding: EdgeInsets.all(25),
child: TextFormField(
decoration: new InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: "To",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
)),
),
),
SizedBox(height: 20.0),
MaterialButton(
height: 58,
minWidth: 340,
shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(12)),
onPressed: () {},
child: Text(
"CONVERT",
style: TextStyle(
fontSize: 24,
color: Colors.black,
),
),
color: Color(0xFFF7CA18),
),
],
),
),
),
);
这是另一个解决方案:
Container(
height: MediaQuery.of(context).size.height * 0.10,
width: MediaQuery.of(context).size.width,
child: ButtonTheme(
minWidth: MediaQuery.of(context).size.width * 0.75,
child: RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(25.0),
side: BorderSide(color: Colors.blue)),
onPressed: () async {
// Do something
},
color: Colors.red[900],
textColor: Colors.white,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text("Button Text,
style: TextStyle(fontSize: 24)),
),
),
),
),
这是您的问题的代码。你只需要在 boxdecoration 中使用一个简单的带有半径半径的容器。
new Container(
alignment: Alignment.center,
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(15.0)),
color: Colors.blue,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(10.0),
child: new Text(
"Next",
style: new TextStyle(
fontWeight: FontWeight.w500,
color: Colors.white,
fontSize: 15.0,
),
),
),
],
),
),
RaisedButton(
child: Text("Button"),
onPressed: (){},
shape: RoundedRectangleBorder(borderRadius: new BorderRadius.circular(30.0),
side: BorderSide(color: Colors.red))
)
您可以创建自定义视图并将其放入 GestureDetector 中,使其像按钮一样工作。好处是您可以为容器提供无限类型的自定义装饰(包括以指定半径制作圆形)。
现在我们有一个图标按钮来实现圆角按钮点击和叠加。不过目前还没有背景色,不过同样可以通过圆形头像小部件实现,如下:
CircleAvatar(
backgroundColor: const Color(0xffF4F3FA),
child: IconButton(
onPressed: () => FlushbarHelper.createInformation(
message: 'Work in progress...')
.show(context),
icon: Icon(Icons.more_vert),
),
),
您也可以使用 ButtonTheme()
:
这里是示例代码-
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: () {},
),
),
创建圆角按钮的最简单方法之一是使用 FlatButton
,然后通过设置其 shape
属性 来指定圆度。按照下面的代码
FlatButton(
padding: EdgeInsets.all(30.0),
color: Colors.black,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20.0)),
child: child: Text(
"Button",
style: TextStyle(color: Colors.white),
),
onPressed: () {
print('Button pressed');
},
),
Note: In order to change the roundness adjust the value inside BorderRadius.circular()
你也可以使用StadiumBorder
形状来实现:
FlatButton(
onPressed: () {},
child: Text('StadiumBorder'),
shape: StadiumBorder(),
color: Colors.pink,
textColor: Colors.white,
),
Container(
width: yourWidth,
height: yourHeight ,
decoration: BoxDecoration(
borderRadius: radius,
gradient: yourGradient,
border: yourBorder),
child: FlatButton(
onPressed: {} (),
shape: RoundedRectangleBorder(borderRadius: radius),
.......
并使用相同的半径。
自 2020 年 9 月起,Flutter 1.22.0:
Both "RaisedButton" and "FlatButton" are deprecated.
最新的解决方案是使用新按钮:
1。 ElevatedButton
:
代码:
ElevatedButton(
child: Text("ElevatedButton"),
onPressed: () => print("it's pressed"),
style: ElevatedButton.styleFrom(
primary: Colors.red,
onPrimary: Colors.white,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(32.0),
),
),
)
别忘了,还有一个.icon
构造函数可以轻松添加图标:
ElevatedButton.icon(
icon: Icon(Icons.thumb_up),
label: Text("Like"),
onPressed: () => print("it's pressed"),
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(32.0),
),
),
)
2。 OutlinedButton
:
代码:
OutlinedButton.icon(
icon: Icon(Icons.star_outline),
label: Text("OutlinedButton"),
onPressed: () => print("it's pressed"),
style: ElevatedButton.styleFrom(
side: BorderSide(width: 2.0, color: Colors.blue),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(32.0),
),
),
)
3。 TextButton
:
如果您不需要轮廓或颜色填充,您可以随时使用 TextButton
。
创建圆角按钮的不同方法如下:
ElevatedButton 与 ElevatedButton.styleFrom
ElevatedButton(
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () {},
child:
Text("Buy now".toUpperCase(), style: TextStyle(fontSize: 14)),
),
带有 ButtonStyle 的 ElevatedButton
ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0),
))),
onPressed: () {},
child: Text("Submit".toUpperCase()),
),
圆形按钮的实际演示可以在下面的Dartpad中找到link:
Rounded Button Demo Examples on DartPad
另一个在 2021 年有效的很酷的解决方案:
TextButton(
child: Padding(
padding: const EdgeInsets.all(5.0),
child: Text('Follow Us'.toUpperCase()),
),
style: TextButton.styleFrom(
backgroundColor: Colors.amber,
shadowColor: Colors.red,
elevation: 2,
textStyle: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(5.0),)
),
onPressed: () {
print('Pressed');
},
),
新的提升按钮
风格
customElevatedButton({radius, color}) => ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(radius == null ? 100 : radius),
),
primary: color,
);
图标
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: () {
},
),
将 TextButton 包装在 Container 小部件中,如下面的代码片段所示:
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5),
border: Border.all(color: Colors.black),
),
child: TextButton(
onPressed: () {
// To do
},
child: Text("Go to Change Language Screen "),
),
)
改用TextButton。
FlatButton、RaisedButton 和 OutlineButton 等按钮据说自 2020 年 10 月起已被弃用。这是 Flutter 开发团队的一项努力,旨在简化并使 Flutter API 保持一致,您可以自定义其样式通过使用样式 属性.
TextButton(
child: Padding(
padding: const EdgeInsets.only(left: 10.0, right: 10.0),
child: Text('Text here',
style: TextStyle(
color: Colors.teal,
fontSize: 14,
fontWeight: FontWeight.w500)),
),
style: TextButton.styleFrom(
primary: Colors.teal,
onSurface: Colors.yellow,
side: BorderSide(color: Colors.teal, width: 2),
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(25))),
),
onPressed: () {
print('Pressed');
},
),
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"),
),
),
),
],
);
}
您可以将此样式用于 elevatedButton 使其成为圆形
style: ButtonStyle(
elevation: MaterialStateProperty.all(8.0),
backgroundColor:
MaterialStateProperty.all(Constants().orangeColor),
textStyle: MaterialStateProperty.all(
TextStyle(
fontSize: 16.0,
),
),
shape: MaterialStateProperty.all<CircleBorder>(
CircleBorder(),
),
shadowColor: MaterialStateProperty.all(Constants().orangeColor),
),
您可以使用此代码:
ElevatedButton(
onPressed: () {},
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(borderRadius))),
),
child: Text("ok"),
)
如果您想使用 MaterialButton
那么,
你可以添加 RoundedRectangleBorder
在 Shape
中给出的像这样,
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"),
),
还有另一种方法可以做到这一点 - 只需将 FloatingActionButton 用于适当的圆形按钮。
Scaffold(
appBar: AppBar(
title: const Text('Floating Action Button'),
),
body: const Center(child: Text('Press the button below!')),
floatingActionButton: FloatingActionButton(
onPressed: () {
// Add your onPressed code here!
},
backgroundColor: Colors.green,
child: const Icon(Icons.navigation),
),
)
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: () {},
),
),
使用 Flutter 版本 2,试试这个
ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<OutlinedBorder>(
RoundedRectangleBorder(
side:
BorderSide(width: 1.0, color: Colors.red,
borderRadius:
BorderRadius.circular(5.0),),),
backgroundColor: MaterialStateProperty.all<Color>(Colors.red),
foregroundColor: MaterialStateProperty.all<Color>(Colors.green),
elevation:
MaterialStateProperty.all<double>(8.0),
padding: MaterialStateProperty.all<EdgeInsetsGeometry>(
const EdgeInsets.symmetric(
horizontal: 15.0,
vertical: 10.0),),),
onPressed: (){},
child: Text('Button'),)
在 Null 安全之后,使用 ElevatedButton 而不是 RaisedButton,因为如文档所述,RaisedButton 已贬值。
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),
),
),
),
),
我目前正在 Flutter 中开发 Android 应用程序。如何添加圆形按钮?
您可以使用 ElevatedButton
小部件。提升的按钮小部件有一个 shape
属性,您可以使用它,如下面的代码片段所示。
ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(
color: Colors.teal,
width: 2.0,
),
),
),
),
child: Text('Submit'),
onPressed: () {},
),
您可以简单地使用 RaisedButton
or you can use InkWell
to get a custom button and also properties like onDoubleTap
, onLongPress
, etc.:
new InkWell(
onTap: () => print('hello'),
child: new Container(
//width: 100.0,
height: 50.0,
decoration: new BoxDecoration(
color: Colors.blueAccent,
border: new Border.all(color: Colors.white, width: 2.0),
borderRadius: new BorderRadius.circular(10.0),
),
child: new Center(child: new Text('Click Me', style: new TextStyle(fontSize: 18.0, color: Colors.white),),),
),
),
如果您想在 InkWell
小部件中使用 splashColor
和 highlightColor
属性,请使用 Material
widget as the parent of the InkWell
widget instead of decorating the container (deleting the decoration property).
如果您使用 Material 应用程序作为主窗口小部件,则始终可以使用 material 按钮。
Padding(
padding: EdgeInsets.symmetric(vertical: 16.0),
child: Material(
borderRadius: BorderRadius.circular(30.0),//Set this up for rounding corners.
shadowColor: Colors.lightBlueAccent.shade100,
child: MaterialButton(
minWidth: 200.0,
height: 42.0,
onPressed: (){//Actions here//},
color: Colors.lightBlueAccent,
child: Text('Log in', style: TextStyle(color: Colors.white),),
),
),
)
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
您可以使用下面的代码制作一个带有渐变颜色的圆角按钮。
Container(
width: 130.0,
height: 43.0,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(30.0),
gradient: LinearGradient(
// Where the linear gradient begins and ends
begin: Alignment.topRight,
end: Alignment.bottomLeft,
// Add one stop for each color. Stops should increase from 0 to 1
stops: [0.1, 0.9],
colors: [
// Colors are easy thanks to Flutter's Colors class.
Color(0xff1d83ab),
Color(0xff0cbab8),
],
),
),
child: FlatButton(
child: Text(
'Sign In',
style: TextStyle(
fontSize: 16.0,
fontFamily: 'Righteous',
fontWeight: FontWeight.w600,
),
),
textColor: Colors.white,
color: Colors.transparent,
shape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(30.0)),
onPressed: () {
},
),
);
您可以将此代码用于透明圆形按钮,方法是将透明颜色传递给 BoxDecoration
内的颜色 属性。
例如。 color: Colors.transparent
。
另外,请注意此按钮仅使用 Container
和 GestureDetector
小部件。
Container(
height: 50.0,
child: GestureDetector(
onTap: () {},
child: Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xFFF05A22),
style: BorderStyle.solid,
width: 1.0,
),
color: Colors.transparent,
borderRadius: BorderRadius.circular(30.0),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Center(
child: Text(
"BUTTON",
style: TextStyle(
color: Color(0xFFF05A22),
fontFamily: 'Montserrat',
fontSize: 16,
fontWeight: FontWeight.w600,
letterSpacing: 1,
),
),
)
],
),
),
),
)
更新
由于 left-sided 按钮现已弃用,请使用 right-sided 按钮。
Deprecated --> Recommended
RaisedButton --> ElevatedButton
OutlineButton --> OutlinedButton
FlatButton --> TextButton
ElevatedButton
使用
StadiumBorder
ElevatedButton( onPressed: () {}, child: Text('Button'), style: ElevatedButton.styleFrom(shape: StadiumBorder()), )
使用
RoundedRectangleBorder
ElevatedButton( onPressed: () {}, child: Text('Button'), style: ElevatedButton.styleFrom( shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(12), // <-- Radius ), ), )
使用
CircleBorder
ElevatedButton( onPressed: () {}, child: Text('Button'), style: ElevatedButton.styleFrom( shape: CircleBorder(), padding: EdgeInsets.all(24), ), )
使用
BeveledRectangleBorder
ElevatedButton( onPressed: () {}, child: Text('Button'), style: ElevatedButton.styleFrom( shape: BeveledRectangleBorder( borderRadius: BorderRadius.circular(12) ), ), )
OutlinedButton
使用
StadiumBorder
OutlinedButton( onPressed: () {}, child: Text('Button'), style: OutlinedButton.styleFrom( shape: StadiumBorder(), ), )
使用
RoundedRectangleBorder
OutlinedButton( onPressed: () {}, child: Text('Button'), style: OutlinedButton.styleFrom( shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(12), ), ), )
使用
CircleBorder
:OutlinedButton( onPressed: () {}, child: Text('Button'), style: OutlinedButton.styleFrom( shape: CircleBorder(), padding: EdgeInsets.all(24), ), )
使用
BeveledRectangleBorder
OutlinedButton( onPressed: () {}, child: Text('Button'), style: OutlinedButton.styleFrom( shape: BeveledRectangleBorder( borderRadius: BorderRadius.circular(12), ), ), )
文本按钮
TextButton
也类似于 ElevatedButton
和 OutlinedButton
,但是,您只能在按下按钮时看到形状。
1.解决方案总结
FlatButton
和 RaisedButton
已弃用。
所以,对于TextButton
和ElevatedButton
.
style
中的shape
自 Flutter 2.0 以来有一些变化:
style
: 属性 类型已更改为ButtonStyle
shape
: 属性 类型已更改为MaterialStateProperty<T>
2。圆形按钮
在 style
属性 中存在 shape
属性:
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red)
)
)
)
方形按钮
对于方形按钮,您可以使用 ElevatedButton
或以其他方式添加:
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.zero,
side: BorderSide(color: Colors.red)
)
)
)
完整示例
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
TextButton(
child: Text(
"Add to cart".toUpperCase(),
style: TextStyle(fontSize: 14)
),
style: ButtonStyle(
padding: MaterialStateProperty.all<EdgeInsets>(EdgeInsets.all(15)),
foregroundColor: MaterialStateProperty.all<Color>(Colors.red),
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red)
)
)
),
onPressed: () => null
),
SizedBox(width: 10),
ElevatedButton(
child: Text(
"Buy now".toUpperCase(),
style: TextStyle(fontSize: 14)
),
style: ButtonStyle(
foregroundColor: MaterialStateProperty.all<Color>(Colors.white),
backgroundColor: MaterialStateProperty.all<Color>(Colors.red),
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.zero,
side: BorderSide(color: Colors.red)
)
)
),
onPressed: () => null
)
]
)
In Flutter, the
Container()
widget is used for styling your widget. Using theContainer()
widget, you can set a border or rounded corner of any widget.
如果您想设置任何类型的样式并设置装饰,请将该小部件放入 Container()
小部件中。这为装饰提供了许多属性。
Container(
width: 100,
padding: EdgeInsets.all(10),
alignment: Alignment.center,
decoration: BoxDecoration(
color: Colors.blueAccent,
borderRadius: BorderRadius.circular(30)), // Make rounded corner
child: Text("Click"),
)
如果有人正在寻找完整的圆形按钮,那么我是这样实现的:
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
],
),
),
),
),
),
)
要在 按钮 中使用任何形状,请确保执行 Button 小部件内的所有代码:
**shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red) ),**
如果你想让它变成正方形,使用BorderRadius.circular(0.0)
它会自动变成正方形。
按钮是这样的:
这是给定 UI 屏幕的所有源代码:
Scaffold(
backgroundColor: Color(0xFF8E44AD),
body: new Center(
child: Column(
children: <Widget>[
Container(
margin: EdgeInsets.fromLTRB(90, 10, 20, 0),
padding: new EdgeInsets.only(top: 92.0),
child: Text(
"Currency Converter",
style: TextStyle(
fontSize: 48,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
),
Container(
margin: EdgeInsets.only(),
padding: EdgeInsets.all(25),
child: TextFormField(
decoration: new InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: "Amount",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
),
),
),
),
Container(
padding: EdgeInsets.all(25),
child: TextFormField(
decoration: new InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: "From",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
),
),
),
),
Container(
padding: EdgeInsets.all(25),
child: TextFormField(
decoration: new InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: "To",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
)),
),
),
SizedBox(height: 20.0),
MaterialButton(
height: 58,
minWidth: 340,
shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(12)),
onPressed: () {},
child: Text(
"CONVERT",
style: TextStyle(
fontSize: 24,
color: Colors.black,
),
),
color: Color(0xFFF7CA18),
),
],
),
),
),
);
这是另一个解决方案:
Container(
height: MediaQuery.of(context).size.height * 0.10,
width: MediaQuery.of(context).size.width,
child: ButtonTheme(
minWidth: MediaQuery.of(context).size.width * 0.75,
child: RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(25.0),
side: BorderSide(color: Colors.blue)),
onPressed: () async {
// Do something
},
color: Colors.red[900],
textColor: Colors.white,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text("Button Text,
style: TextStyle(fontSize: 24)),
),
),
),
),
这是您的问题的代码。你只需要在 boxdecoration 中使用一个简单的带有半径半径的容器。
new Container(
alignment: Alignment.center,
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(15.0)),
color: Colors.blue,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(10.0),
child: new Text(
"Next",
style: new TextStyle(
fontWeight: FontWeight.w500,
color: Colors.white,
fontSize: 15.0,
),
),
),
],
),
),
RaisedButton(
child: Text("Button"),
onPressed: (){},
shape: RoundedRectangleBorder(borderRadius: new BorderRadius.circular(30.0),
side: BorderSide(color: Colors.red))
)
您可以创建自定义视图并将其放入 GestureDetector 中,使其像按钮一样工作。好处是您可以为容器提供无限类型的自定义装饰(包括以指定半径制作圆形)。
现在我们有一个图标按钮来实现圆角按钮点击和叠加。不过目前还没有背景色,不过同样可以通过圆形头像小部件实现,如下:
CircleAvatar(
backgroundColor: const Color(0xffF4F3FA),
child: IconButton(
onPressed: () => FlushbarHelper.createInformation(
message: 'Work in progress...')
.show(context),
icon: Icon(Icons.more_vert),
),
),
您也可以使用 ButtonTheme()
:
这里是示例代码-
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: () {},
),
),
创建圆角按钮的最简单方法之一是使用 FlatButton
,然后通过设置其 shape
属性 来指定圆度。按照下面的代码
FlatButton(
padding: EdgeInsets.all(30.0),
color: Colors.black,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20.0)),
child: child: Text(
"Button",
style: TextStyle(color: Colors.white),
),
onPressed: () {
print('Button pressed');
},
),
Note: In order to change the roundness adjust the value inside
BorderRadius.circular()
你也可以使用StadiumBorder
形状来实现:
FlatButton(
onPressed: () {},
child: Text('StadiumBorder'),
shape: StadiumBorder(),
color: Colors.pink,
textColor: Colors.white,
),
Container(
width: yourWidth,
height: yourHeight ,
decoration: BoxDecoration(
borderRadius: radius,
gradient: yourGradient,
border: yourBorder),
child: FlatButton(
onPressed: {} (),
shape: RoundedRectangleBorder(borderRadius: radius),
.......
并使用相同的半径。
自 2020 年 9 月起,Flutter 1.22.0:
Both "RaisedButton" and "FlatButton" are deprecated.
最新的解决方案是使用新按钮:
1。 ElevatedButton
:
代码:
ElevatedButton(
child: Text("ElevatedButton"),
onPressed: () => print("it's pressed"),
style: ElevatedButton.styleFrom(
primary: Colors.red,
onPrimary: Colors.white,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(32.0),
),
),
)
别忘了,还有一个.icon
构造函数可以轻松添加图标:
ElevatedButton.icon(
icon: Icon(Icons.thumb_up),
label: Text("Like"),
onPressed: () => print("it's pressed"),
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(32.0),
),
),
)
2。 OutlinedButton
:
代码:
OutlinedButton.icon(
icon: Icon(Icons.star_outline),
label: Text("OutlinedButton"),
onPressed: () => print("it's pressed"),
style: ElevatedButton.styleFrom(
side: BorderSide(width: 2.0, color: Colors.blue),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(32.0),
),
),
)
3。 TextButton
:
如果您不需要轮廓或颜色填充,您可以随时使用 TextButton
。
创建圆角按钮的不同方法如下:
ElevatedButton 与 ElevatedButton.styleFrom
ElevatedButton(
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () {},
child:
Text("Buy now".toUpperCase(), style: TextStyle(fontSize: 14)),
),
带有 ButtonStyle 的 ElevatedButton
ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0),
))),
onPressed: () {},
child: Text("Submit".toUpperCase()),
),
圆形按钮的实际演示可以在下面的Dartpad中找到link:
Rounded Button Demo Examples on DartPad
另一个在 2021 年有效的很酷的解决方案:
TextButton(
child: Padding(
padding: const EdgeInsets.all(5.0),
child: Text('Follow Us'.toUpperCase()),
),
style: TextButton.styleFrom(
backgroundColor: Colors.amber,
shadowColor: Colors.red,
elevation: 2,
textStyle: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(5.0),)
),
onPressed: () {
print('Pressed');
},
),
新的提升按钮
风格
customElevatedButton({radius, color}) => ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(radius == null ? 100 : radius),
),
primary: color,
);
图标
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: () {
},
),
将 TextButton 包装在 Container 小部件中,如下面的代码片段所示:
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5),
border: Border.all(color: Colors.black),
),
child: TextButton(
onPressed: () {
// To do
},
child: Text("Go to Change Language Screen "),
),
)
改用TextButton。
FlatButton、RaisedButton 和 OutlineButton 等按钮据说自 2020 年 10 月起已被弃用。这是 Flutter 开发团队的一项努力,旨在简化并使 Flutter API 保持一致,您可以自定义其样式通过使用样式 属性.
TextButton(
child: Padding(
padding: const EdgeInsets.only(left: 10.0, right: 10.0),
child: Text('Text here',
style: TextStyle(
color: Colors.teal,
fontSize: 14,
fontWeight: FontWeight.w500)),
),
style: TextButton.styleFrom(
primary: Colors.teal,
onSurface: Colors.yellow,
side: BorderSide(color: Colors.teal, width: 2),
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(25))),
),
onPressed: () {
print('Pressed');
},
),
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"),
),
),
),
],
);
}
您可以将此样式用于 elevatedButton 使其成为圆形
style: ButtonStyle(
elevation: MaterialStateProperty.all(8.0),
backgroundColor:
MaterialStateProperty.all(Constants().orangeColor),
textStyle: MaterialStateProperty.all(
TextStyle(
fontSize: 16.0,
),
),
shape: MaterialStateProperty.all<CircleBorder>(
CircleBorder(),
),
shadowColor: MaterialStateProperty.all(Constants().orangeColor),
),
您可以使用此代码:
ElevatedButton(
onPressed: () {},
style: ElevatedButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(borderRadius))),
),
child: Text("ok"),
)
如果您想使用 MaterialButton
那么,
你可以添加 RoundedRectangleBorder
在 Shape
中给出的像这样,
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"),
),
还有另一种方法可以做到这一点 - 只需将 FloatingActionButton 用于适当的圆形按钮。
Scaffold(
appBar: AppBar(
title: const Text('Floating Action Button'),
),
body: const Center(child: Text('Press the button below!')),
floatingActionButton: FloatingActionButton(
onPressed: () {
// Add your onPressed code here!
},
backgroundColor: Colors.green,
child: const Icon(Icons.navigation),
),
)
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: () {},
),
),
使用 Flutter 版本 2,试试这个
ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<OutlinedBorder>(
RoundedRectangleBorder(
side:
BorderSide(width: 1.0, color: Colors.red,
borderRadius:
BorderRadius.circular(5.0),),),
backgroundColor: MaterialStateProperty.all<Color>(Colors.red),
foregroundColor: MaterialStateProperty.all<Color>(Colors.green),
elevation:
MaterialStateProperty.all<double>(8.0),
padding: MaterialStateProperty.all<EdgeInsetsGeometry>(
const EdgeInsets.symmetric(
horizontal: 15.0,
vertical: 10.0),),),
onPressed: (){},
child: Text('Button'),)
在 Null 安全之后,使用 ElevatedButton 而不是 RaisedButton,因为如文档所述,RaisedButton 已贬值。
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),
),
),
),
),