两个常用的组件：Material和Scaffold修饰App和H5一样很固定。 1.Container 2.Text 3.picture import'package:flutter/material.dart'; voidmain(){ runApp(MaterialApp( home:Scaffold( appBar:AppBar(title:Text("Flutter")), body:Column( children:[MyApp(),Mybutton()], )))); } classMyAppextendsStatelessWidget{ constMyApp({super.k...