Update:
注意：在下面的示例中，您可以注释掉尝试加载 srt 字幕文件的行（closedCaptionFile: _loadCaptions,).
将 pubspec.yaml 中的以下内容更改为video_player: ^2.1.15
注意 - 另外，您是否尝试在 iOS 或 Android 中运行此程序？确保你打开
Runner.xcworkspace 文件并执行标准 Xcode 例程。制作
确保 Runner 项目和 pods 项目可见。尝试
跑步flutter build ios从航站楼。
然后重新运行flutter pub get或单击 UI 中的获取依赖项。我还会制作一个演示项目（存根 -flutter create --org com.yoursite stub01）并添加提供的示例以查看在线示例是否正常工作。
Original:
这是来自的完整示例插件网站 https://pub.dev/packages/video_player/example对于视频播放器。您可以将其粘贴到您的环境中以确保一切正常。您还应该确保您按照设置步骤授予您的 iOS/Android 应用程序访问互联网的权限（请参阅安装注意事项 https://pub.dev/packages/video_player在网站的自述文件部分）。我还要确保跑flutter upgrade在您的终端上。
// Copyright 2013 The Flutter 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_docs
/// An example of using the plugin, controlling lifecycle and playback of the
/// video.
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';
void main() {
runApp(
MaterialApp(
home: _App(),
),
);
}
class _App extends StatelessWidget {
@override
Widget build(BuildContext context) {
return DefaultTabController(
length: 3,
child: Scaffold(
key: const ValueKey<String>('home_page'),
appBar: AppBar(
title: const Text('Video player example'),
actions: <Widget>[
IconButton(
key: const ValueKey<String>('push_tab'),
icon: const Icon(Icons.navigation),
onPressed: () {
Navigator.push<_PlayerVideoAndPopPage>(
context,
MaterialPageRoute<_PlayerVideoAndPopPage>(
builder: (BuildContext context) => _PlayerVideoAndPopPage(),
),
);
},
)
],
bottom: const TabBar(
isScrollable: true,
tabs: <Widget>[
Tab(
icon: Icon(Icons.cloud),
text: "Remote",
),
Tab(icon: Icon(Icons.insert_drive_file), text: "Asset"),
Tab(icon: Icon(Icons.list), text: "List example"),
],
),
),
body: TabBarView(
children: <Widget>[
_BumbleBeeRemoteVideo(),
_ButterFlyAssetVideo(),
_ButterFlyAssetVideoInList(),
],
),
),
);
}
}
class _ButterFlyAssetVideoInList extends StatelessWidget {
@override
Widget build(BuildContext context) {
return ListView(
children: <Widget>[
_ExampleCard(title: "Item a"),
_ExampleCard(title: "Item b"),
_ExampleCard(title: "Item c"),
_ExampleCard(title: "Item d"),
_ExampleCard(title: "Item e"),
_ExampleCard(title: "Item f"),
_ExampleCard(title: "Item g"),
Card(
child: Column(children: <Widget>[
Column(
children: <Widget>[
const ListTile(
leading: Icon(Icons.cake),
title: Text("Video video"),
),
Stack(
alignment: FractionalOffset.bottomRight +
const FractionalOffset(-0.1, -0.1),
children: <Widget>[
_ButterFlyAssetVideo(),
Image.asset('assets/flutter-mark-square-64.png'),
]),
],
),
])),
_ExampleCard(title: "Item h"),
_ExampleCard(title: "Item i"),
_ExampleCard(title: "Item j"),
_ExampleCard(title: "Item k"),
_ExampleCard(title: "Item l"),
],
);
}
}
/// A filler card to show the video in a list of scrolling contents.
class _ExampleCard extends StatelessWidget {
const _ExampleCard({Key? key, required this.title}) : super(key: key);
final String title;
@override
Widget build(BuildContext context) {
return Card(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
ListTile(
leading: const Icon(Icons.airline_seat_flat_angled),
title: Text(title),
),
ButtonBar(
children: <Widget>[
TextButton(
child: const Text('BUY TICKETS'),
onPressed: () {
/* ... */
},
),
TextButton(
child: const Text('SELL TICKETS'),
onPressed: () {
/* ... */
},
),
],
),
],
),
);
}
}
class _ButterFlyAssetVideo extends StatefulWidget {
@override
_ButterFlyAssetVideoState createState() => _ButterFlyAssetVideoState();
}
class _ButterFlyAssetVideoState extends State<_ButterFlyAssetVideo> {
late VideoPlayerController _controller;
@override
void initState() {
super.initState();
_controller = VideoPlayerController.asset('assets/Butterfly-209.mp4');
_controller.addListener(() {
setState(() {});
});
_controller.setLooping(true);
_controller.initialize().then((_) => setState(() {}));
_controller.play();
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return SingleChildScrollView(
child: Column(
children: <Widget>[
Container(
padding: const EdgeInsets.only(top: 20.0),
),
const Text('With assets mp4'),
Container(
padding: const EdgeInsets.all(20),
child: AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: Stack(
alignment: Alignment.bottomCenter,
children: <Widget>[
VideoPlayer(_controller),
_ControlsOverlay(controller: _controller),
VideoProgressIndicator(_controller, allowScrubbing: true),
],
),
),
),
],
),
);
}
}
class _BumbleBeeRemoteVideo extends StatefulWidget {
@override
_BumbleBeeRemoteVideoState createState() => _BumbleBeeRemoteVideoState();
}
class _BumbleBeeRemoteVideoState extends State<_BumbleBeeRemoteVideo> {
late VideoPlayerController _controller;
Future<ClosedCaptionFile> _loadCaptions() async {
final String fileContents = await DefaultAssetBundle.of(context)
.loadString('assets/bumble_bee_captions.srt');
return SubRipCaptionFile(fileContents);
}
@override
void initState() {
super.initState();
_controller = VideoPlayerController.network(
'https://flutter.github.io/assets-for-api-docs/assets/videos/bee.mp4',
// closedCaptionFile: _loadCaptions(),
videoPlayerOptions: VideoPlayerOptions(mixWithOthers: true),
);
_controller.addListener(() {
setState(() {});
});
_controller.setLooping(true);
_controller.initialize();
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return SingleChildScrollView(
child: Column(
children: <Widget>[
Container(padding: const EdgeInsets.only(top: 20.0)),
const Text('With remote mp4'),
Container(
padding: const EdgeInsets.all(20),
child: AspectRatio(
aspectRatio: _controller.value.aspectRatio,
child: Stack(
alignment: Alignment.bottomCenter,
children: <Widget>[
VideoPlayer(_controller),
ClosedCaption(text: _controller.value.caption.text),
_ControlsOverlay(controller: _controller),
VideoProgressIndicator(_controller, allowScrubbing: true),
],
),
),
),
],
),
);
}
}
class _ControlsOverlay extends StatelessWidget {
const _ControlsOverlay({Key? key, required this.controller})
: super(key: key);
static const _examplePlaybackRates = [
0.25,
0.5,
1.0,
1.5,
2.0,
3.0,
5.0,
10.0,
];
final VideoPlayerController controller;
@override
Widget build(BuildContext context) {
return Stack(
children: <Widget>[
AnimatedSwitcher(
duration: Duration(milliseconds: 50),
reverseDuration: Duration(milliseconds: 200),
child: controller.value.isPlaying
? SizedBox.shrink()
: Container(
color: Colors.black26,
child: Center(
child: Icon(
Icons.play_arrow,
color: Colors.white,
size: 100.0,
),
),
),
),
GestureDetector(
onTap: () {
controller.value.isPlaying ? controller.pause() : controller.play();
},
),
Align(
alignment: Alignment.topRight,
child: PopupMenuButton<double>(
initialValue: controller.value.playbackSpeed,
tooltip: 'Playback speed',
onSelected: (speed) {
controller.setPlaybackSpeed(speed);
},
itemBuilder: (context) {
return [
for (final speed in _examplePlaybackRates)
PopupMenuItem(
value: speed,
child: Text('${speed}x'),
)
];
},
child: Padding(
padding: const EdgeInsets.symmetric(
// Using less vertical padding as the text is also longer
// horizontally, so it feels like it would need more spacing
// horizontally (matching the aspect ratio of the video).
vertical: 12,
horizontal: 16,
),
child: Text('${controller.value.playbackSpeed}x'),
),
),
),
],
);
}
}
class _PlayerVideoAndPopPage extends StatefulWidget {
@override
_PlayerVideoAndPopPageState createState() => _PlayerVideoAndPopPageState();
}
class _PlayerVideoAndPopPageState extends State<_PlayerVideoAndPopPage> {
late VideoPlayerController _videoPlayerController;
bool startedPlaying = false;
@override
void initState() {
super.initState();
_videoPlayerController =
VideoPlayerController.asset('assets/Butterfly-209.mp4');
_videoPlayerController.addListener(() {
if (startedPlaying && !_videoPlayerController.value.isPlaying) {
Navigator.pop(context);
}
});
}
@override
void dispose() {
_videoPlayerController.dispose();
super.dispose();
}
Future<bool> started() async {
await _videoPlayerController.initialize();
await _videoPlayerController.play();
startedPlaying = true;
return true;
}
@override
Widget build(BuildContext context) {
return Material(
elevation: 0,
child: Center(
child: FutureBuilder<bool>(
future: started(),
builder: (BuildContext context, AsyncSnapshot<bool> snapshot) {
if (snapshot.data == true) {
return AspectRatio(
aspectRatio: _videoPlayerController.value.aspectRatio,
child: VideoPlayer(_videoPlayerController),
);
} else {
return const Text('waiting for video to load');
}
},
),
),
);
}
}
