flutter新版按钮常用设置

              textButtonTheme: TextButtonThemeData(
                style: ButtonStyle(
                  backgroundColor:
                      MaterialStateProperty.all<Color>(Colors.transparent),
                  overlayColor:
                      MaterialStateProperty.all<Color>(Colors.transparent),
                ),
/*              ButtonStyle(
                    //定义文本的样式 这里设置的颜色是不起作用的
                    textStyle: MaterialStateProperty.all(
                        TextStyle(fontSize: 18, color: Colors.red)),
                    //设置按钮上字体与图标的颜色
                    //foregroundColor: MaterialStateProperty.all(Colors.deepPurple),
                    //更优美的方式来设置
                    foregroundColor: MaterialStateProperty.resolveWith(
                          (states) {
                        if (states.contains(MaterialState.focused) &&
                            !states.contains(MaterialState.pressed)) {
                          //获取焦点时的颜色
                          return Colors.blue;
                        } else if (states.contains(MaterialState.pressed)) {
                          //按下时的颜色
                          return Colors.deepPurple;
                        }
                        //默认状态使用灰色
                        return Colors.grey;
                      },
                    ),
                    //背景颜色
                    backgroundColor: MaterialStateProperty.resolveWith((states) {
                      //设置按下时的背景颜色
                      if (states.contains(MaterialState.pressed)) {
                        return Colors.blue[200];
                      }
                      //默认不使用背景颜色
                      return null;
                    }),
                    //设置水波纹颜色
                    overlayColor: MaterialStateProperty.all(Colors.yellow),
                    //设置阴影  不适用于这里的TextButton
                    elevation: MaterialStateProperty.all(0),
                    //设置按钮内边距
                    padding: MaterialStateProperty.all(EdgeInsets.all(10)),
                    //设置按钮的大小
                    minimumSize: MaterialStateProperty.all(Size(200, 100)),

                    //设置边框
                    side:
                    MaterialStateProperty.all(BorderSide(color: Colors.grey, width: 1)),
                    //外边框装饰 会覆盖 side 配置的样式
                    shape: MaterialStateProperty.all(StadiumBorder()),
                  ),*/
              ),

TextButton(
  style: ButtonStyle(
    foregroundColor: MaterialStateProperty.all<Color>(Colors.blue),
  ),
  onPressed: () { },
  child: Text('TextButton'),
)

TextButton(
  style: ButtonStyle(
    foregroundColor: MaterialStateProperty.all<Color>(Colors.blue),
    overlayColor: MaterialStateProperty.resolveWith<Color?>(
      (Set<MaterialState> states) {
        if (states.contains(MaterialState.hovered))
          return Colors.blue.withOpacity(0.04);
        if (states.contains(MaterialState.focused) ||
            states.contains(MaterialState.pressed))
          return Colors.blue.withOpacity(0.12);
        return null; // Defer to the widget's default.
      },
    ),
  ),
  onPressed: () { },
  child: Text('TextButton')
)

TextButton(
  style: ButtonStyle(
    overlayColor: MaterialStateProperty.resolveWith<Color?>(
      (Set<MaterialState> states) {
        if (states.contains(MaterialState.focused))
          return Colors.red;
        return null; // Defer to the widget's default.
      }
    ),
  ),
  onPressed: () { },
  child: Text('TextButton'),
)

styleFrom()ButtonStyle 实用方法

TextButton(
  style: TextButton.styleFrom(
    primary: Colors.blue,
  ),
  onPressed: () { },
  child: Text('TextButton'),
)

final ButtonStyle flatButtonStyle = TextButton.styleFrom(
  primary: Colors.black87,
  minimumSize: Size(88, 36),
  padding: EdgeInsets.symmetric(horizontal: 16.0),
  shape: const RoundedRectangleBorder(
    borderRadius: BorderRadius.all(Radius.circular(2.0)),
  ),
);

TextButton(
  style: flatButtonStyle,
  onPressed: () { },
  child: Text('Looks like a FlatButton'),
)

final ButtonStyle outlineButtonStyle = OutlinedButton.styleFrom(
  primary: Colors.black87,
  minimumSize: Size(88, 36),
  padding: EdgeInsets.symmetric(horizontal: 16),
  shape: const RoundedRectangleBorder(
    borderRadius: BorderRadius.all(Radius.circular(2)),
  ),
).copyWith(
  side: MaterialStateProperty.resolveWith<BorderSide>(
    (Set<MaterialState> states) {
      if (states.contains(MaterialState.pressed))
        return BorderSide(
          color: Theme.of(context).colorScheme.primary,
          width: 1,
        );
      return null; // Defer to the widget's default.
    },
  ),
);

OutlinedButton(
  style: outlineButtonStyle,
  onPressed: () { },
  child: Text('Looks like an OutlineButton'),
)