I was able to play a simple sound with this line of code:

我可以用下面这行代码播放一个简单的声音：

SystemSound.play(SystemSoundType.click);

How can I play a customized sound?

如何播放自定义声音？

Let's say a short mp3

让我们说一小段mp3

优秀答案推荐

Simple solution for playing a file already defined in assets is using AudioCache.
Library: https://pub.dartlang.org/packages/audioplayers.
More about AudioCache
After adding library to pubspec.yaml, import required class:

播放已在资源中定义的文件的简单解决方案是使用AudioCache。图书馆：https://pub.dartlang.org/packages/audioplayers.有关AudioCache的更多信息在将库添加到pubspec.yaml后，导入所需的类：

import 'package:audioplayers/audio_cache.dart';

add an asset in the same file and place the file with sound to assets folder (if you don't have this folder, create it)

在同一文件中添加资源，并将带有声音的文件放到资源文件夹中(如果没有此文件夹，请创建它)

assets:
- assets/sound_alarm.mp3

then add this code:

然后添加以下代码：

static AudioPlayer player = new AudioPlayer();
const alarmAudioPath = "sound_alarm.mp3";
player.play(alarmAudioPath);

An example here

下面是一个例子

Thanks for checking out Flutter!

感谢您收看Fflight！

Flutter SDK today (as of May 5, 2017) doesn't have built-in support to play and control arbitrary audio. However, we designed our plugin system to support it.

目前(截至2017年5月5日)Ffltter SDK尚不具备播放和控制任意音频的内置支持。然而，我们设计了我们的插件系统来支持它。

This plugin adds audio support to Flutter: https://pub.dartlang.org/packages/audioplayer

此插件为Flutter添加了音频支持：https://pub.dartlang.org/packages/audioplayer

From the plugin's README:

来自插件的自述文件：

Future play() async {
  final result = await audioPlayer.play(kUrl);
  if (result == 1) setState(() => playerState = PlayerState.playing);
}

// add a isLocal parameter to play a local file
Future playLocal() async {
  final result = await audioPlayer.play(kUrl);
  if (result == 1) setState(() => playerState = PlayerState.playing);
}


Future pause() async {
  final result = await audioPlayer.pause();
  if (result == 1) setState(() => playerState = PlayerState.paused);
}

Future stop() async {
  final result = await audioPlayer.stop();
  if (result == 1) {
    setState(() {
      playerState = PlayerState.stopped;
      position = new Duration();
    });
  }
}

The audioplayers works (from https://medium.com/@bennett4/adding-custom-sound-effects-to-a-flutter-mobile-app-41594f1f3305):

音频播放器的工作原理（来自https：//medium.com/@bennett4/adding-custom-sound-effects-to-a-flutter-mobile-app-41594f1f3305）：

(1) Add the library to your pubspec.yaml: audioplayers: ^0.15.1

(1)将库添加到pubspec。yaml：audioplayer：^0.15.1

(2) In pubspec.yaml under flutter add the reference to your assets file:

(2)在fltter下的pubspec.yaml中，添加对资源文件的引用：

flutter
    assets:
       - assets/yes.mp3

MAKE SURE it is under the assets folder. It does not work when it is in a subfolder. For example, something like: - assets/sounds/yes.mp3 will not work. Just put your audio file in the assets folder, not in its subfolder

确保它位于Assets文件夹下。当它在子文件夹中时，它不起作用。例如，类似以下内容：-Assets/Sound/yes.mp3将不起作用。只需将您的音频文件放入Assets文件夹，而不是其子文件夹

(3) import the library in your app as: import package:audioplayers/audioplayers.dart;

(3)在您的APP中导入库为：导入包：AudioPlayers/AudioPlayers.dart；

(4) then define this function:

(4)然后定义此功能：

Future<AudioPlayer> playLocalAsset() async {
    AudioCache cache = new AudioCache();
   //At the next line, DO NOT pass the entire reference such as assets/yes.mp3. This will not work.
   //Just pass the file name only.
    return await cache.play("yes.mp3"); 
}

(5) call the function whenever you need to play a sound: await playLocalAsset();

(5)需要播放声音时调用该函数：等待playLocalAsset()；

Null-safe code:

1. Add dependency to your pubspec.yaml file,

   
   

   dependencies:
     audioplayers: ^0.19.0
   

   
   



2. Add audio file path to your pubspec.yaml file.

   
   

   flutter: 
     assets:
       - assets/audio/my_audio.mp3
   

   
   



3. Run flutter pub get

   
   

Full code:

完整代码：

class HomePage extends StatelessWidget {
  final AudioCache _audioCache = AudioCache(
    prefix: 'audio/',
    fixedPlayer: AudioPlayer()..setReleaseMode(ReleaseMode.STOP),
  );
  
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ElevatedButton(
        onPressed: () => _audioCache.play('my_audio.mp3'),
        child: Text('Play Audio'),
      ),
    );
  }
}

[Answer updated: this approach doesn't work, see comments]
You can use the video_player plugin maintained by the Flutter team. It can reproduce many kinds of media across platforms, including sound files. More specifically, you may want to use the the VideoPlayerController class.

[答案更新：此方法不起作用，见评论]您可以使用扑翼团队维护的VIDEO_PLAYER插件。它可以跨平台复制多种媒体，包括声音文件。更具体地说，您可能希望使用VideoPlayerControl类。

eg.

例如。

   _controller = VideoPlayerController.network('https://www.example.com/soundsFile.wav');
   _controller.play();

You can use just_audio package.

您可以使用Just_Audio包。

To play sound from a local file...
Follow the steps :-

要播放本地文件中的声音...遵循以下步骤：-

1. Run flutter pub add just_audio in your terminal


2. import 'package:just_audio/just_audio.dart'; -> Import package in your file


3. AudioPlayer player = AudioPlayer(); -> Create the object


4. player.setAsset('path_to_your_audiofile'); -> Set the path to your audio asset


5. player.play(); -> Play the audio

Here is a sample method implementing this :-

以下是实现这一点的示例方法：

void playSampleSound() async {
     AudioPlayer player = AudioPlayer();
    await player.setAsset('assets/audio/sample_audio.mp3');
    player.play();
  }

Thanks

谢谢

You should give a try to https://pub.dev/packages/audioplayers

你应该试一试https://pub.dev/packages/audioplayers

First add

第一次添加

dependencies:
  audioplayers: ^5.1.0

flutter:
  assets:
     - assets/
     - assets/icon/
     - assets/sound/

Then may i suggest to use a service

那么我可以建议使用一项服务吗？

class AudioService {
    
      AudioService._();
    
      static final AudioService _instance = AudioService._();
    
      factory AudioService() {
        return _instance;
      }
    
      void playSound(AssetSource assetSource) async{
          AudioPlayer().play(assetSource, mode: PlayerMode.lowLatency); // faster play low latency eg for a game...
      }
    }

Then use assets as const

然后使用资源作为常量

class Constants{
  static final AssetSource sound = AssetSource('sound/mysound.mp3');
}

Finally, the code to call the sound

最后，调用声音的代码

AudioService().playSound(Constants.sound );