今天的控件是button。
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RaisedButton

import 'package:flutter/material.dart';

void main() => runApp(MyButton());
/**
 *  Key key,
 *@required VoidCallback onPressed,  //点击回调事件
 *ValueChanged<bool> onHighlightChanged,//水波纹高亮变化回调
 *ButtonTextTheme textTheme,//按钮样式（文字颜色、按钮大小，内边距，shape）
 *Color textColor,//文字颜色
 *Color disabledTextColor,//按钮被禁用时文字颜色
 *Color color,//按钮颜色
 *Color disabledColor,//按钮被禁用时颜色
 *Color focusColor,
 *Color hoverColor,
 *Color highlightColor,//按钮水波纹亮起颜色
 *Color splashColor,
 *Brightness colorBrightness,
 *double elevation,
 *double focusElevation,
 *double hoverElevation,
 *double highlightElevation,
 *double disabledElevation,
 *EdgeInsetsGeometry padding,
 *ShapeBorder shape,
 *Clip clipBehavior,
 *FocusNode focusNode,
 *bool autofocus = false,
 *MaterialTapTargetSize materialTapTargetSize,
 *Duration animationDuration,
 *Widget child,
 */
class MyButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return MaterialApp(
      title: "my button",
      home: Scaffold(
        body: Center(
          child: RaisedButton(
            onPressed: () {
              print("点我干嘛");
            },
            child: Text("我是按钮，点我吧"),
            color: Colors.deepOrange,
            highlightColor: Colors.lightBlueAccent,
          ),
        ),
      ),
    );
  }
}

IconButton

带图标的按钮

import 'package:flutter/material.dart';

void main() => runApp(MyButton());

class MyButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return MaterialApp(
      title: "my button",
      home: Scaffold(
        body: Center(
            child: IconButton(
          icon: Icon(
            Icons.adjust,
          ),
          color: Colors.deepOrange,
          onPressed: () {},
          iconSize: 30,
        )),
      ),
    );
  }
}