Flutter组件-Button-RaisedButton-凸起按钮

防采集标记：亢少军老师的课程和资料 示例代码 //文档地址:https://docs.flutter.io/flutter/material/RaisedButton-class.html import 'package:flutter/material.dart'; import 'dart:math'; void main() { runApp(new MaterialApp(

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