p2
1创立我的项目:
我的项目目录下:
flutter create 我的项目名(本人起 不反对大小写 能够用下划线 比方:flutter_shop)
呈现All done就是创立胜利了
2装置:Awesome Flutter Snippets
点开能够看到疾速生成办法的指令
stlss:StatelessWidget 动态组件
3.创立一个pages文件夹
flutter举荐以下划线的模式命名
点vscode右下角的no devices能够关上虚拟机
ctrl+波浪线能够关上终端
4.目录构造:
5.代码:
main.dart:
import 'package:flutter/material.dart';import './pages/Index_page.dart';void main()=>runApp(Myapp());class Myapp extends StatelessWidget { @override Widget build(BuildContext context) { // 每个组件外边写个container当前更好扩大 例如调节边距 // debugShowCheckedModeBanner: false,右上角的debug不展现 return Container( child: MaterialApp( title:'百姓生活+', debugShowCheckedModeBanner: false, theme: ThemeData( primaryColor:Colors.pink ), home: IndexPage(), ), ); }}
index_page.dart:
import 'package:flutter/material.dart';class IndexPage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( appBar:AppBar(title:Text('百姓生活+')), body: Center( child:Text('百姓生活+') ), ); }}
P3+P4底栏实现
1根底解说
谷歌推出适配平板电脑 台式机 手机 有质感 有立体感 卡片格调 有交互成果
import 'package:flutter/material.dart';
ios格调
import 'package:flutter/cupertino.dart';
2目录构造:
3页面代码
index_page.dart
import 'package:flutter/material.dart';import 'package:flutter/cupertino.dart';import './cart_page.dart';import './home_page.dart';import './categary_page.dart';import './member_page.dart';// 动静组件class IndexPage extends StatefulWidget { @override _IndexPageState createState() => _IndexPageState();}class _IndexPageState extends State<IndexPage> { final List<BottomNavigationBarItem>bottomTabs=[ BottomNavigationBarItem( icon:Icon(CupertinoIcons.home), title:Text('首页') ), BottomNavigationBarItem( icon:Icon(CupertinoIcons.search), title:Text('分类') ), BottomNavigationBarItem( icon:Icon(CupertinoIcons.shopping_cart), title:Text('购物车') ), BottomNavigationBarItem( icon:Icon(CupertinoIcons.profile_circled), title:Text('会员中心') ) ]; // 建设一个列表 final List tabbodies=[ HomePage(), CategaryPage(), CartPage(), MemberPage() ]; int currentIndex=0; var currentPage; @override void initState() { // TODO: implement initState currentPage=tabbodies[currentIndex]; super.initState(); } @override Widget build(BuildContext context) { return Scaffold( backgroundColor: Color.fromRGBO(244, 245, 245, 1.0), bottomNavigationBar: BottomNavigationBar( type:BottomNavigationBarType.fixed, currentIndex: currentIndex, items: bottomTabs, onTap: (index){ setState(() { currentIndex=index; currentPage=tabbodies[currentIndex]; }); }, ), body: currentPage, ); }}
home_page.dart
import 'package:flutter/material.dart';class HomePage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( body:Center( child:Text('首页') ) ); }}
其余三个页面 都一样的把名字改了就行 略