经过一个月的潜心研发，原创新作品flutter3.x-dylive跨平台短视频+直播项目正式完结了。 
flutter_dylive使用最新跨平台技术flutter3.19+dart3.3+getx+get_storage+media_kit搭建仿抖音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。
使用技术
- 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
flutter3入口配置
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}); 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), ); } }
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; }); }, ), ), ], ); }), ), );
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 ], ), ], ), ), ], ), );
短视频底部采用Slider组件实现mini播放进度条。
return 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实现直播模块
// 商品展示动效 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( ... ), ),
综上就是flutter3开发短视频直播项目的一些知识分享，希望对大家有所帮助！
