LiErDan的博客

import 'dart:io';import 'package:flutter/foundation.dart';import 'package:flutter/material.dart';import 'package:qr_code_scanner/qr_code_scanner.dart';const flashOn = 'FLASH ON';const flashOff = 'FLASH OFF';const frontCamera = 'FRONT CAMERA';const

import 'package:flutter/cupertino.dart';import 'package:flutter/material.dart';import 'package:shared_preferences/shared_preferences.dart';class FileReadAndWrite extends StatefulWidget { @override _FileReadAndWriteState createState() => _FileRead

import 'package:flutter/material.dart';import 'package:connectivity/connectivity.dart';class NetWorkDetection extends StatefulWidget { @override _NetWorkDetectionState createState() => _NetWorkDetectionState();}class _NetWorkDetectionState ext

import 'package:flutter/material.dart';import 'package:chewie/chewie.dart';import 'package:video_player/video_player.dart';class PlayVideo extends StatefulWidget { String title = "视频播放器"; @override _PlayVideoState createState() => _PlayVideoSt

import 'package:dio/dio.dart';import 'package:http_parser/http_parser.dart';import 'package:flutter/material.dart';import 'package:flutter/rendering.dart';import 'package:flutter/services.dart';import 'package:image_pickers/image_pickers.dart';import

Container( color: Colors.green, child: Column( children: [ Flexible(child: Container( color: Colors.yellow, child:SingleChildScrollView( child: Column( mainA

import 'dart:io';import 'package:flutter/material.dart';import 'package:flutter/services.dart';import 'package:device_info/device_info.dart';class DevInformation extends StatefulWidget { @override _DevInformationState createState() => _DevInfor

// Copyright 2018 The Chromium Authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file.// ignore_for_file: public_member_api_docsimport 'dart:async';import 'dart:convert';im

import 'package:flutter/material.dart';import 'dart:convert';import 'package:dio/dio.dart';import 'package:flutter_html/flutter_html.dart';import 'package:flutter_html/html_parser.dart';import 'package:flutter_html/style.dart';class NewsContent .

import 'package:flutter/material.dart';import 'dart:convert';import 'package:dio/dio.dart';class NewsPage extends StatefulWidget { NewsPage({Key key}) : super(key: key); _NewsPageState createState() => _NewsPageState();}class _NewsPageState

import 'dart:convert';import 'package:flutter/material.dart';import 'package:dio/dio.dart';class DioExample extends StatefulWidget { var arguments; DioExample({arguments}); @override _DioExampleState createState() => _DioExampleState(argu

import 'dart:convert';import 'dart:io';import 'package:flutter/material.dart';import 'package:http/http.dart' as http;class HttpExample extends StatefulWidget { HttpExample({arguments}); @override _HttpState createState() => _HttpState();}

import 'package:flutter/cupertino.dart';import 'package:flutter/material.dart';import 'package:bot_toast/bot_toast.dart';import '../../components/MyDiglog.dart';class Time extends StatefulWidget { @override _TimeState createState() => _TimeStat

import 'package:flutter/material.dart';import 'package:flutter_swiper/flutter_swiper.dart';class Point extends StatefulWidget { @override _PointState createState() => _PointState();}class _PointState extends State<Point> { List item = [

//需要修改with, Diagnosticableclass DateTimePickerTheme with Diagnosticable{ final cancelDefault = const Text('OK');

import 'package:date_format/date_format.dart';import 'package:flutter/cupertino.dart' as cup;import 'package:flutter/material.dart';import 'package:flutter_localizations/flutter_localizations.dart';class GoodsInfo extends StatefulWidget { var argume

import 'package:flutter/cupertino.dart';import 'package:flutter/foundation.dart';import 'package:flutter/material.dart';class GoodsInfo extends StatefulWidget { var arguments; GoodsInfo({this.arguments}); @override _GoodsInfoState createState

import 'package:flutter/material.dart';class GoodsInfo extends StatefulWidget { var arguments; GoodsInfo({this.arguments}); @override _GoodsInfoState createState() => _GoodsInfoState(arguments:this.arguments);}class _GoodsInfoState extend

import 'package:flutter/material.dart';import 'package:flutter_app/pages/Search.dart';import 'package:flutter_app/pages/homePages/Home.dart';import 'package:flutter_app/pages/homePages/Point.dart';import 'package:flutter_app/pages/homePages/Time.dart';

import 'package:flutter/cupertino.dart';import 'package:flutter/material.dart';class Time extends StatefulWidget { @override _TimeState createState() => _TimeState();}class _TimeState extends State<Time> { @override Widget build(Build

Scaffold( //从屏幕最左侧拉出来的抽屉, 手机版QQ的个人设置就是怎么实现的 drawer: Center( child: Text("抽屉啊"), ), //和上面的区别是从右侧拉出来 endDrawer: Drawer( child: Column( children: [ //自定义的DrawerHeader Row(

使用DefaultTabController,Scaffold 嵌套 出现了双 appBar的解决方案, 一种是放在appBar的title里, 效果不理想.一种是在内层appBar的title是null, 调整appBar的toolbarHeightimport 'package:flutter/material.dart';import 'package:flutter_app/pages/HomeContent.dart';class Search extends StatefulWidget

Scaffold( appBar: AppBar( title: Text("GoodsInfo"), ), body: Center( child: RaisedButton( child: Text("下一步"), onPressed: (){ //替换当前Widget, /Search返回当前Widget的上一页, 而不是当前Widget. Navi

import 'dart:io';import 'package:flutter/cupertino.dart';import 'package:flutter/material.dart';import 'package:flutter_app/routes/Route.dart';void main() => runApp(MyApp());class MyApp extends StatelessWidget { @override Widget build(BuildC

import 'package:flutter/material.dart';import 'package:flutter_app/pages/Search.dart';class Home extends StatefulWidget { @override _HomeState createState() => _HomeState();}class _HomeState extends State<Home> { @override Widget buil

import 'dart:io';import 'package:flutter/cupertino.dart';import 'package:flutter/material.dart';import 'pages/HomeContent.dart';void main() => runApp(MyApp());class MyApp extends StatelessWidget { @override Widget build(BuildContext context)

class Daemon extends StatefulWidget { @override _DaemonState createState() => _DaemonState();}class _DaemonState extends State<Daemon> { var list = <Widget>[]; var number = 0; @override Widget build(BuildContext context) {

class Layout extends StatelessWidget { @override Widget build(BuildContext context) { return Wrap( spacing: 5, //元素横向间隔 runSpacing: 5, //元素上下间隔 alignment: WrapAlignment.end, //最后一行元素的对其方式, 上面行的元素都占满了空间, 所以不存在对齐问题 ch

class IconContainer extends StatelessWidget { IconData icon; double iconSize; Color iconColor; double containerHeight; double containerWidth; Color containerColor; IconContainer(this.icon, {this.iconSize = 32.0, this.iconColor =

AspectRatio( aspectRatio: 2 / 3, //宽高比 child: Container( color: Colors.red, ) );ListView( children: [ Card( elevation: 5, //设置阴影 shape: const RoundedRectangleBorder(borderR.

Stack & AlignContainer( color: Colors.red, child: Stack( //这个盒子里的所有元素都覆盖重叠在一起 children: [ Align( //为某一个元素单独定位 alignment: Alignment.center, //上下左右正中心 child: Container(

Padding( padding: EdgeInsets.fromLTRB(0, 0, 10, 10), child: Image.network( "https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=2767608770,826089718&fm=26&gp=0.jpg", width: 190, // h...

GridView 格式GridView.count( crossAxisCount:2, // 一共有几列 mainAxisSpacing: 10, //横向格间距 crossAxisSpacing: 10, //竖向格间距 children: [ Container( child: Column( children: [ Image.n

竖向列表Container( width: 300, child: ListView( children: [ ListTile( //ListTile为一种固定格式的元素, 有标题和副标题还可以加图标 leading: Icon(Icons.home), title: Text("what are you doing?"), subtitle:

child: Container( //子元素图片 child: Image.asset( 'images/ali.jfif', alignment: Alignment.center, color: Colors.green, // color 和 colorBlendMode 设置图片的混合色, 一般不使用 colorBlendMode: BlendMode.screen,

Container( // child: Text( // "what are you doing??", // textDirection: TextDirection.ltr, // style: TextStyle( // color: Colors.green // ), // ), child: Image.asset('images/ali.jf

import 'package:flutter/material.dart';void main()=>runApp(MyApp());class MyApp extends StatelessWidget{ @override Widget build(BuildContext context) { return MaterialApp( home:Scaffold( appBar: AppBar( title: Text("T