Flutter 简单自定义一个button

Flutter 构建一个CustomButton,组合RaiseButton和label.

//自定义CustomButton类方法
class CustomButton extends StatelessWidget {
final String label;
CustomButton(this.label);

@override
Widget build(BuildContext context) {
return RaisedButton(onPressed: () {}, child: Text(label));
}
}

//使用CustomButton，在页面中间显示一个“Hello”的按钮
@override
Widget build(BuildContext context) {
return Center(
child: CustomButton("Hello"),
);
}