在Flutter中创建一个带有border-radius的圆角按钮/按钮

Question

我目前正在Flutter开发一款Android应用.如何添加圆形按钮,类似于此？http://pertamini.co/rounded-button/

Answer 1

您可以使用RaisedButton小部件.Raised Button Widget具有shape属性,您可以使用它,如下面的代码段所示.

 RaisedButton(
          child: Text("Press Me"),
          onPressed: null,
          shape: RoundedRectangleBorder(borderRadius: new BorderRadius.circular(30.0))
        )

Answer 2

自 2020 年 9 月以来，Flutter 1.22.0：

“RaisedButton”和“FlatButton”均已弃用。

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),
    ),
  ),
)

不要忘记，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.：

TextButton如果您不想要轮廓或颜色填充，您可以随时使用。

Answer 3

您可以将形状用于FlatButton和RaisedButton。

对于圆形按钮：

shape: RoundedRectangleBorder(
        borderRadius: new BorderRadius.circular(18.0),
        side: BorderSide(color: Colors.red)
),

对于方形按钮：

shape: RoundedRectangleBorder(
           borderRadius: new BorderRadius.circular(0.0),
           side: BorderSide(color: Colors.red)
),

Row(
    mainAxisAlignment: MainAxisAlignment.end,
    children: <Widget>[
      FlatButton(
        shape: new RoundedRectangleBorder(
            borderRadius: new BorderRadius.circular(18.0),
            side: BorderSide(color: Colors.red)),
        color: Colors.white,
        textColor: Colors.red,
        padding: EdgeInsets.all(8.0),
        onPressed: () {},
        child: Text(
          "Add to Cart".toUpperCase(),
          style: TextStyle(
            fontSize: 14.0,
          ),
        ),
      ),
      SizedBox(width: 10),
      RaisedButton(
        shape: new RoundedRectangleBorder(
            borderRadius: new BorderRadius.circular(18.0),
            side: BorderSide(color: Colors.red)),
        onPressed: () {},
        color: Colors.red,
        textColor: Colors.white,
        child: Text("Buy now".toUpperCase(),
            style: TextStyle(fontSize: 14)),
      ),
    ],   
)

Answer 4

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：

Answer 5

你可以简单地使用RaisedButton,也可以使用InkWell获得自定义按钮和性质也一样onDoubleTap,onLongPress并且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),),),
  ),
),

如果你想使用splashColor,highlightColor在属性InkWell窗口小部件,使用Material小部件的父InkWell窗口小部件,而不是装饰容器(删除decoration属性).了解原因？在这里.

Answer 6

有很多方法可以做到这一点。我在这里列出一些。

（1）使用 RoundedRectangleBorder

RaisedButton(
  shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
  onPressed: () {},
  child: Text("Button"),
)

（2）使用 ClipRRect

ClipRRect(
  borderRadius: BorderRadius.circular(40),
  child: RaisedButton(
    onPressed: () {},
    child: Text("Button"),
  ),
)

（3）使用 ClipOval

ClipOval(
  child: RaisedButton(
    onPressed: () {},
    child: Text("Button"),
  ),
)

（4）使用 ButtonTheme

ButtonTheme(
  shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
  child: RaisedButton(
    onPressed: () {},
    child: Text("Button"),
  ),
)

（5）使用 StadiumBorder

RaisedButton(
  shape: StadiumBorder(),
  onPressed: () {},
  child: Text("Button"),
)

Answer 7

在新的更新中flutter 3.0flutter 使用Material 3指南

据此，按钮的默认边框是圆角的

Default Button

  ElevatedButton(
          onPressed: () {}, child: const Text("Default Button ")),

Button with Border Radius Zero

 ElevatedButton(
          style: ElevatedButton.styleFrom(
              shape: const RoundedRectangleBorder(
                  borderRadius: BorderRadius.zero)),
          onPressed: () {},
          child: const Text("Border Radius Zero ")),

Button with custom border radius

  ElevatedButton(
          style: ElevatedButton.styleFrom(
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(50))),
          onPressed: () {},
          child: const Text("Border Radius Custom ")),

FilledButton注意：您可以对、TextButton等使用相同的逻辑。

有关按钮样式，请参阅https://m3.material.io/components/all-buttons 。

Answer 8

请改用TextButton。

FlatButton、RaishedButton 和 OutlineButton 等按钮据称自 2020 年 10 月起已被弃用。这是 Flutter 开发团队为简化和保持 Flutter API 一致性所做的努力之一，您可以使用 style 属性自定义其样式。

      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');
        },
      ),

Answer 9

你可以使用这个代码：

ElevatedButton(
      onPressed: () {},
      style: ElevatedButton.styleFrom(
        shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.all(Radius.circular(borderRadius))),
      ),
      child: Text("ok"),
    )

Answer 10

您可以使用以下代码制作带有渐变颜色的圆形按钮。

 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: () {

            },
          ),
        );

Answer 11

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
                      ],
                    ),
                  ),
                ),
              ),
            ),
          )

Answer 12

要在button 中使用任何形状，请确保执行Button小部件中的所有代码：

 **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)它自动使它变成一个正方形。

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),
          ),
        ],
      ),
    ),
  ),
);

Answer 13

创建圆形按钮的不同方法如下：

带有 ElevatedButton.styleFrom 的 ElevatedButton

ElevatedButton(
          style: ElevatedButton.styleFrom(
            shape: new RoundedRectangleBorder(
              borderRadius: new 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 链接中找到：

DartPad 上的圆形按钮演示示例

Answer 14

您可以通过将透明颜色传递给内部的 color 属性来将此代码用于透明的圆形按钮BoxDecoration。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,
                            ),
                        ),
                    )
                ],
            ),
        ),
    ),
)

Answer 15

这是您的问题的代码。您只需在 boxdecoration 中采用一个带有边框半径的简单容器即可。

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,
                    ),
                ),
            ),
        ],
    ),
),

Answer 16

RaisedButton(
          child: Text("Button"),
          onPressed: (){},
          shape: RoundedRectangleBorder(borderRadius: new BorderRadius.circular(30.0),
          side: BorderSide(color: Colors.red))
        )

Answer 17

您还可以使用ButtonTheme()：

这是示例代码 -

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: () {},
    ),
),

Answer 18

创建圆形按钮的最简单方法之一是使用 a FlatButton，然后通过设置其shape属性来指定圆度。请按照下面的代码操作

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');
  },
),

注意：为了改变圆度，调整里面的值BorderRadius.circular()

Answer 19

您还可以通过使用StadiumBorder形状来实现它：

FlatButton(
  onPressed: () {},
  child: Text('StadiumBorder'),
  shape: StadiumBorder(),
  color: Colors.pink,
  textColor: Colors.white,
),

Answer 20

如果你想使用的MaterialButton话，

您可以像这样添加给RoundedRectangleBorder定Shape，

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"),
),

Answer 21

在 Null 安全性之后，使用 ElevatedButton 而不是 RaisingButton，因为 RaisingButton 已按文档所述折旧。

             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),
                    ),
                  ),
                ),
              ),