原创研发 flutter3+getX+mediaKit 仿抖音app 短视频直播实战 Flutter-DouYin 。
flutter3_dylive 使用最新跨平台技术 flutter3.x+dart3+getx+get_storage+media_kit 开发手机端仿抖音app小视频直播实战项目。实现了 抖音全屏式上下滑动视频、左右滑动切换页面模块，直播间进场/礼物动画，聊天 等模块。
技术栈
- 编辑器：Vscode
- 技术框架：Flutter3.19.2+Dart3.3.0
- 路由/状态管理：get: ^4.6.6
- 本地缓存：get_storage: ^2.1.1
- 图片预览插件：photo_view: ^0.14.0
- 刷新加载：easy_refresh^3.3.4
- toast轻提示：toast^0.3.0
- 视频套件：media_kit: ^1.1.10+1
flutter_douyin实现了类似抖音全屏沉浸式滑动效果(上下滑动视频、左右切换页面模块)。
如下图：实现了左右滑动的同时，顶部 状态栏+Tab菜单+底部bottomNavigationBar导航栏 三者联动效果。
项目结构目录
在项目创建前期，需要配置好Flutter SDK和Dart SDK开发环境。
如果是使用Vscode编辑器开发flutter项目，大家需自行配置flutter/dart扩展语法插件。
项目中的一些技术知识点，有些是在之前的项目flutter3聊天实例中有介绍过，感兴趣的话可以去看看。
Flutter入口配置main.dart
import 'dart:io';import 'package:flutter/material.dart';import 'package:get/get.dart';import 'package:get_storage/get_storage.dart';import 'package:media_kit/media_kit.dart';import 'utils/index.dart';// 引入布局模板import 'layouts/index.dart';import 'binding/binding.dart';// 引入路由管理import 'router/index.dart';void main() async { // 初始化get_storage await GetStorage.init(); // 初始化media_kit WidgetsFlutterBinding.ensureInitialized(); MediaKit.ensureInitialized(); runApp(const MyApp());}class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return GetMaterialApp( title: 'FLUTTER3 DYLIVE', debugShowCheckedModeBanner: false, theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFFFE2C55)), useMaterial3: true, // 修正windows端字体粗细不一致 fontFamily: Platform.isWindows ? 'Microsoft YaHei' : null, ), home: const Layout(), // 全局绑定GetXController initialBinding: GlobalBindingController(), // 初始路由 initialRoute: Utils.isLogin() ? '/' : '/login', // 路由页面 getPages: routePages, // 错误路由 // unknownRoute: GetPage(name: '/404', page: Error), ); }}
Flutter3底部导航栏
底部导航栏使用 bottomNavigationBar 组件实现页面模块切换。通过getx全局状态来联动控制底部导航栏背景颜色。
导航栏中间图标/图片按钮，使用了 Positioned 组件定位实现功能。
return Scaffold( backgroundColor: Colors.grey[50], body: pageList[pageCurrent], // 底部导航栏 bottomNavigationBar: Theme( // Flutter去掉BottomNavigationBar底部导航栏的水波纹 data: ThemeData( splashColor: Colors.transparent, highlightColor: Colors.transparent, hoverColor: Colors.transparent, ), child: Obx(() { return Stack( children: [ Container( decoration: const BoxDecoration( border: Border(top: BorderSide(color: Colors.black54, width: .1)), ), child: BottomNavigationBar( backgroundColor: bottomNavigationBgcolor(), fixedColor: FStyle.primaryColor, unselectedItemColor: bottomNavigationItemcolor(), type: BottomNavigationBarType.fixed, elevation: 1.0, unselectedFontSize: 12.0, selectedFontSize: 12.0, currentIndex: pageCurrent, items: [ ...pageItems ], onTap: (index) { setState(() { pageCurrent = index; }); }, ), ), // 自定义底部导航栏中间按钮 Positioned( left: MediaQuery.of(context).size.width / 2 - 15, top: 0, bottom: 0, child: InkWell( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ // Icon(Icons.tiktok, color: bottomNavigationItemcolor(centerDocked: true), size: 32.0,), Image.asset('assets/images/applogo.png', width: 32.0, fit: BoxFit.contain,) // Text('直播', style: TextStyle(color: bottomNavigationItemcolor(centerDocked: true), fontSize: 12.0),) ], ), onTap: () { setState(() { pageCurrent = 2; }); }, ), ), ], ); }), ),);
import 'package:flutter/material.dart';import 'package:get/get.dart';import '../styles/index.dart';import '../../controllers/page_video_controller.dart';// 引入pages页面import '../pages/index/index.dart';import '../pages/video/index.dart';import '../pages/live/index.dart';import '../pages/message/index.dart';import '../pages/my/index.dart';class Layout extends StatefulWidget { const Layout({super.key}); @override State<Layout> createState() => _LayoutState();}class _LayoutState extends State<Layout> { PageVideoController pageVideoController = Get.put(PageVideoController()); // page索引 int pageCurrent = 0; // page页面 List pageList = [const Index(), const FVideo(), const FLiveList(), const Message(), const My()]; // tabs选项 List pageItems = [ const BottomNavigationBarItem( icon: Icon(Icons.home_outlined), label: '首页' ), const BottomNavigationBarItem( icon: Icon(Icons.play_arrow_outlined), label: '短视频' ), const BottomNavigationBarItem( icon: Icon(Icons.live_tv_rounded, color: Colors.transparent,), label: '' ), BottomNavigationBarItem( icon: Stack( alignment: const Alignment(4, -2), children: [ const Icon(Icons.messenger_outline), FStyle.badge(1) ], ), label: '消息' ), BottomNavigationBarItem( icon: Stack( alignment: const Alignment(1.5, -1), children: [ const Icon(Icons.person_outline), FStyle.badge(0, isdot: true) ], ), label: '我' ) ]; // 底部导航栏背景色 Color bottomNavigationBgcolor() { int index = pageCurrent; int pageVideoTabIndex = pageVideoController.pageVideoTabIndex.value; Color color = Colors.white; if(index == 1) { if([1, 2, 3].contains(pageVideoTabIndex)) { color = Colors.white; }else { color = Colors.black; } } return color; } // 底部导航栏颜色 Color bottomNavigationItemcolor({centerDocked = false}) { int index = pageCurrent; int pageVideoTabIndex = pageVideoController.pageVideoTabIndex.value; Color color = Colors.black54; if(index == 1) { if([1, 2, 3].contains(pageVideoTabIndex)) { color = Colors.black54; }else { color = Colors.white60; } }else if(index == 2 && centerDocked) { color = FStyle.primaryColor; } return color; } // ...}
Flutter实现抖音全屏式滑动
如下图：实现类似抖音左右滑动全屏切换页面模块、上下滑动丝滑切换短视频。
采用 TabBar 和 PageView 联动页面滑动。
return Scaffold( extendBodyBehindAppBar: true, appBar: AppBar( forceMaterialTransparency: true, backgroundColor: [1, 2, 3].contains(pageVideoController.pageVideoTabIndex.value) ? null : Colors.transparent, foregroundColor: [1, 2, 3].contains(pageVideoController.pageVideoTabIndex.value) ? Colors.black : Colors.white, titleSpacing: 1.0, leading: Obx(() => IconButton(icon: Icon(Icons.menu, color: tabColor(),), onPressed: () {},),), title: Obx(() { return TabBar( controller: tabController, tabs: pageTabs.map((v) => Tab(text: v)).toList(), isScrollable: true, tabAlignment: TabAlignment.center, overlayColor: MaterialStateProperty.all(Colors.transparent), unselectedLabelColor: unselectedTabColor(), labelColor: tabColor(), indicatorColor: tabColor(), indicatorSize: TabBarIndicatorSize.label, unselectedLabelStyle: const TextStyle(fontSize: 16.0, fontFamily: 'Microsoft YaHei'), labelStyle: const TextStyle(fontSize: 16.0, fontFamily: 'Microsoft YaHei', fontWeight: FontWeight.w600), dividerHeight: 0, labelPadding: const EdgeInsets.symmetric(horizontal: 10.0), indicatorPadding: const EdgeInsets.symmetric(horizontal: 5.0), onTap: (index) { pageVideoController.updatePageVideoTabIndex(index); // 更新索引 pageController.jumpToPage(index); }, ); }), actions: [ Obx(() => IconButton(icon: Icon(Icons.search, color: tabColor(),), onPressed: () {},),), ], ), body: Column( children: [ Expanded( child: Stack( children: [ /// 水平滚动模块 PageView( // 自定义滚动行为(支持桌面端滑动、去掉滚动条槽) scrollBehavior: PageScrollBehavior().copyWith(scrollbars: false), scrollDirection: Axis.horizontal, controller: pageController, onPageChanged: (index) { pageVideoController.updatePageVideoTabIndex(index); // 更新索引 setState(() { tabController.animateTo(index); }); }, children: [ ...pageModules ], ), ], ), ), ], ),);
PageVideoController pageVideoController = Get.put(PageVideoController());List<String> pageTabs = ['热点', '长视频', '文旅', '商城', '关注', '同城服务', '推荐'];final pageModules = [ const HotModule(), const LongVideoModule(), const TripModule(), const MallModule(), const FavorModule(), const NearModule(), const RecommendModule()];late final TabController tabController = TabController(initialIndex: pageVideoController.pageVideoTabIndex.value, length: pageTabs.length, vsync: this);// 页面controllerlate final PageController pageController = PageController(initialPage: pageVideoController.pageVideoTabIndex.value, viewportFraction: 1.0);@overridevoid dispose() { tabController.dispose(); pageController.dispose(); super.dispose();}
flutter短视频mini进度条
底部mini播放进度条一开始是采用自定义组件实现效果，不过不能拖动滚动条进度，后来就采用了 Slider 组件来实现。
// flutter滑动短视频模块 Q：282310962return Container( color: Colors.black, child: Column( children: [ Expanded( child: Stack( children: [ /// 垂直滚动模块 PageView.builder( // 自定义滚动行为(支持桌面端滑动、去掉滚动条槽) scrollBehavior: PageScrollBehavior().copyWith(scrollbars: false), scrollDirection: Axis.vertical, controller: pageController, onPageChanged: (index) async { ... }, itemCount: videoList.length, itemBuilder: (context, index) { return Stack( children: [ // 视频区域 Positioned( top: 0, left: 0, right: 0, bottom: 0, child: GestureDetector( child: Stack( children: [ // 短视频插件 Visibility( visible: videoIndex == index, child: Video( controller: videoController, fit: BoxFit.cover, // 无控制条 controls: NoVideoControls, ), ), // 播放/暂停按钮 StreamBuilder( stream: player.stream.playing, builder: (context, playing) { return Visibility( visible: playing.data == false, child: Center( child: IconButton( padding: EdgeInsets.zero, onPressed: () { player.playOrPause(); }, icon: Icon( playing.data == true ? Icons.pause : Icons.play_arrow_rounded, color: Colors.white70, size: 70, ), ), ), ); }, ), ], ), onTap: () { player.playOrPause(); }, ), ), // 右侧操作栏 Positioned( bottom: 15.0, right: 10.0, child: Column( ... ), ), // 底部信息区域 Positioned( bottom: 15.0, left: 10.0, right: 80.0, child: Column( ... ), ), // 播放mini进度条 Positioned( bottom: 0.0, left: 10.0, right: 10.0, child: Visibility( visible: videoIndex == index && position > Duration.zero, child: Listener( child: SliderTheme( data: const SliderThemeData( trackHeight: 2.0, thumbShape: RoundSliderThumbShape(enabledThumbRadius: 4.0), // 调整滑块的大小 // trackShape: RectangularSliderTrackShape(), // 使用矩形轨道形状 overlayShape: RoundSliderOverlayShape(overlayRadius: 0), // 去掉Slider默认上下边距间隙 inactiveTrackColor: Colors.white24, // 设置非活动进度条的颜色 activeTrackColor: Colors.white, // 设置活动进度条的颜色 thumbColor: Colors.pinkAccent, // 设置滑块的颜色 overlayColor: Colors.transparent, // 设置滑块覆盖层的颜色 ), child: Slider( value: sliderValue, onChanged: (value) async { // debugPrint('当前视频播放时间$value'); setState(() { sliderValue = value; }); // 跳转播放时间 await player.seek(duration * value.clamp(0.0, 1.0)); }, onChangeEnd: (value) async { setState(() { sliderDraging = false; }); // 继续播放 if(!player.state.playing) { await player.play(); } }, ), ), onPointerMove: (e) { setState(() { sliderDraging = true; }); }, ), ), ), // 视频播放时间 Positioned( bottom: 90.0, left: 10.0, right: 10.0, child: Visibility( visible: sliderDraging, child: Row( mainAxisAlignment: MainAxisAlignment.center, children: [ Text(position.label(reference: duration), style: const TextStyle(color: Colors.white, fontSize: 16.0, fontWeight: FontWeight.w600),), Container( margin: const EdgeInsets.symmetric(horizontal: 7.0), child: const Text('/', style: TextStyle(color: Colors.white54, fontSize: 10.0,),), ), Text(duration.label(reference: duration), style: const TextStyle(color: Colors.white54, fontSize: 16.0, fontWeight: FontWeight.w600),), ], ), ), ), ], ); }, ), /// 固定层 // 红包 Positioned( left: 15.0, top: MediaQuery.of(context).padding.top + 20, child: Container( height: 40.0, width: 40.0, decoration: BoxDecoration( color: Colors.black12, borderRadius: BorderRadius.circular(100.0), ), child: UnconstrainedBox( child: Image.asset('assets/images/time-hb.png', width: 30.0, fit: BoxFit.contain,), ), ), ), ], ), ), ], ),);
flutter3直播模块
flutter直播模块包含了 顶部信息、底部进场提示+商品层+弹幕层+操作栏 等几个模块。
// 商品购买动效Container( ...),// 加入直播间动效const AnimationLiveJoin( joinQueryList: [ {'avatar': 'assets/images/logo.png', 'name': 'andy'}, {'avatar': 'assets/images/logo.png', 'name': 'jack'}, {'avatar': 'assets/images/logo.png', 'name': '一条咸鱼'}, {'avatar': 'assets/images/logo.png', 'name': '四季平安'}, {'avatar': 'assets/images/logo.png', 'name': '叶子'}, ],),// 送礼物动效const AnimationLiveGift( giftQueryList: [ {'label': '小心心', 'gift': 'assets/images/gift/gift1.png', 'user': 'Jack', 'avatar': 'assets/images/avatar/uimg2.jpg', 'num': 12}, {'label': '棒棒糖', 'gift': 'assets/images/gift/gift2.png', 'user': 'Andy', 'avatar': 'assets/images/avatar/uimg6.jpg', 'num': 36}, {'label': '大啤酒', 'gift': 'assets/images/gift/gift3.png', 'user': '一条咸鱼', 'avatar': 'assets/images/avatar/uimg1.jpg', 'num': 162}, {'label': '人气票', 'gift': 'assets/images/gift/gift4.png', 'user': 'Flower', 'avatar': 'assets/images/avatar/uimg5.jpg', 'num': 57}, {'label': '鲜花', 'gift': 'assets/images/gift/gift5.png', 'user': '四季平安', 'avatar': 'assets/images/avatar/uimg3.jpg', 'num': 6}, {'label': '捏捏小脸', 'gift': 'assets/images/gift/gift6.png', 'user': 'Alice', 'avatar': 'assets/images/avatar/uimg4.jpg', 'num': 28}, {'label': '你真好看', 'gift': 'assets/images/gift/gift7.png', 'user': '叶子', 'avatar': 'assets/images/avatar/uimg7.jpg', 'num': 95}, {'label': '亲吻', 'gift': 'assets/images/gift/gift8.png', 'user': 'YOYO', 'avatar': 'assets/images/avatar/uimg8.jpg', 'num': 11}, {'label': '玫瑰', 'gift': 'assets/images/gift/gift12.png', 'user': '宇辉', 'avatar': 'assets/images/avatar/uimg9.jpg', 'num': 3}, {'label': '私人飞机', 'gift': 'assets/images/gift/gift16.png', 'user': 'Hison', 'avatar': 'assets/images/avatar/uimg10.jpg', 'num': 273}, ],),// 直播弹幕+商品讲解Container( margin: const EdgeInsets.only(top: 7.0), height: 200.0, child: Row( crossAxisAlignment: CrossAxisAlignment.end, children: [ Expanded( child: ListView.builder( padding: EdgeInsets.zero, itemCount: liveJson[index]['message']?.length, itemBuilder: (context, i) => danmuList(liveJson[index]['message'])[i], ), ), SizedBox( width: isVisibleGoodsTalk ? 7 : 35, ), // 商品讲解 Visibility( visible: isVisibleGoodsTalk, child: Column( ... ), ), ], ),),// 底部工具栏Container( margin: const EdgeInsets.only(top: 7.0), child: Row( ... ),),
直播聊天弹幕通过Flexible配合Text.rich / TextSpan实现消息自适应布局界面。
通过 SlideTransition 组件实现直播进场动画。
return SlideTransition( position: animationFirst ? animation : animationMix, child: Container( alignment: Alignment.centerLeft, margin: const EdgeInsets.only(top: 7.0), padding: const EdgeInsets.symmetric(horizontal: 7.0,), height: 23.0, width: 250, decoration: const BoxDecoration( gradient: LinearGradient( begin: Alignment.centerLeft, end: Alignment.centerRight, colors: [ Color(0xFF6301FF), Colors.transparent ], ), borderRadius: BorderRadius.horizontal(left: Radius.circular(10.0)), ), child: joinList!.isNotEmpty ? Text('欢迎 ${joinList![0]['name']} 加入直播间', style: const TextStyle(color: Colors.white, fontSize: 14.0,),) : Container() , ),);
class _AnimationLiveJoinState extends State<AnimationLiveJoin> with TickerProviderStateMixin { // 动画控制器 late AnimationController controller = AnimationController( vsync: this, duration: const Duration(milliseconds: 500), // 第一个动画持续时间 ); late AnimationController controllerMix = AnimationController( vsync: this, duration: const Duration(milliseconds: 1000), // 第二个动画持续时间 ); // 动画 late Animation<Offset> animation = Tween(begin: const Offset(2.5, 0), end: const Offset(0, 0)).animate(controller); late Animation<Offset> animationMix = Tween(begin: const Offset(0, 0), end: const Offset(-2.5, 0)).animate(controllerMix); Timer? timer; // 是否第一个动画 bool animationFirst = true; // 是否空闲 bool idle = true; // 加入直播间数据列表 List? joinList; @override void initState() { super.initState(); joinList = widget.joinQueryList!.toList(); runAnimation(); animation.addListener(() { if(animation.status == AnimationStatus.forward) { debugPrint('第一个动画进行中'); idle = false; setState(() {}); }else if(animation.status == AnimationStatus.completed) { debugPrint('第一个动画结束'); animationFirst = false; if(controllerMix.isCompleted || controllerMix.isDismissed) { timer = Timer(const Duration(seconds: 2), () { controllerMix.forward(); debugPrint('第二个动画开始'); }); } setState(() {}); } }); animationMix.addListener(() { if(animationMix.status == AnimationStatus.forward) { setState(() {}); }else if(animationMix.status == AnimationStatus.completed) { animationFirst = true; controller.reset(); controllerMix.reset(); if(joinList!.isNotEmpty) { joinList!.removeAt(0); } idle = true; // 执行下一个数据 runAnimation(); setState(() {}); } }); } void runAnimation() { if(joinList!.isNotEmpty) { // 空闲状态才能执行，防止添加数据播放状态混淆 if(idle == true) { if(controller.isCompleted || controller.isDismissed) { setState(() {}); timer = Timer(Duration.zero, () { controller.forward(); }); } } } } @override void dispose() { controller.dispose(); controllerMix.dispose(); timer?.cancel(); super.dispose(); }}
综上就是flutter3实战开发仿抖音的一些知识分享，由于涉及的技术点还是蛮多的，就没有非常详细的展开介绍了。希望以上的一些分享能给大家有些帮助~
目前flutter3-dylive项目已经同步到我的原创作品集。
最后附上两个跨端项目
uniapp+vue3短视频直播商城：
tauri+vite4中后台管理系统：