assets_audio_player 1.4.5

Play music/audio stored in assets files directly from Flutter. Compatible with Android, iOS and web

🎧 assets_audio_player 🔊

Play music/audio stored in assets files (simultaneously) directly from Flutter (android / ios / web).

You can also use play audio files from network using their url

try online : https://flutter-assets-audio-player.web.app

flutter:
  assets:
    - assets/audios/

AssetsAudioPlayer.newPlayer().open(
    Audio("assets/audios/song1.mp3"),
    autoPlay: true,
);

📥 Import

dependencies:
  assets_audio_player: ^1.4.5

Works with flutter: ">=1.12.13+hotfix.6 <2.0.0", be sure to upgrade your sdk

🌐 Web support

And if you wan web support, enable web then add

dependencies:
  assets_audio_player_web: ^1.4.5

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Feature	Android	iOS	Web
Open Asset file	✅	✅	✅
Open Network file	✅	✅	✅
Open local file	✅	✅	✅
Play	✅	✅	✅
Pause	✅	✅	✅
Stop	✅	✅	✅
Loop	✅	✅	✅
Multiple players	✅	✅	✅
Open Playlist	✅	✅	✅
Playlist Actions (next/prev)	✅	✅	✅
Seek(position)	✅	✅	✅
SeekBy(position)	✅	✅	✅
Forward(speed)	✅	✅	✅
Rewind(speed)	✅	✅	✅
get/set Volume	✅	✅	✅
get/set Play Speed	✅	✅	✅
system play notification	v	✅	🚫
Respect System silent mode	✅	✅	🚫
Pause on phone call	✅	✅	🚫
Listener onReady(completeDuration)	✅	✅	✅
Listener finished	✅	✅	✅
Listener currentPosition	✅	✅	✅

📁 Import assets files

No needed to copy songs to a media cache, with assets_audio_player you can open them directly from the assets.

1. Create an audio directory in your assets (not necessary named "audios")
2. Declare it inside your pubspec.yaml

flutter:
  assets:
    - assets/audios/

🛠️ Getting Started

final assetsAudioPlayer = AssetsAudioPlayer();

assetsAudioPlayer.open(
    Audio("assets/audios/song1.mp3"),
);

You can also play network songs from url

final assetsAudioPlayer = AssetsAudioPlayer();

assetsAudioPlayer.open(
    Audio.network("http://www.mysite.com/myMp3file.mp3"),
);

And play songs from file

//create a new player
final assetsAudioPlayer = AssetsAudioPlayer();

assetsAudioPlayer.open(
    Audio.file(FILE_URI),
);

assetsAudioPlayer.playOrPause();
assetsAudioPlayer.play();
assetsAudioPlayer.pause();

assetsAudioPlayer.seek(Duration to);
assetsAudioPlayer.seekBy(Duration by);

assetsAudioPlayer.forwardRewind(double speed);
//if positive, forward, if negative, rewind

assetsAudioPlayer.stop();

⛓ Play in parallel / simultaneously

You can create new AssetsAudioPlayer using AssetsAudioPlayer.newPlayer(), which will play songs in a different native Media Player

This will enable to play two songs simultaneously

You can have as many player as you want !

///play 3 songs in parallel
AssetsAudioPlayer.newPlayer().open(
    Audio("assets/audios/song1.mp3")
);
AssetsAudioPlayer.newPlayer().open(
    Audio("assets/audios/song2.mp3")
);

//another way, with create, open, play & dispose the player on finish
AssetsAudioPlayer.playAndForget(
    Audio("assets/audios/song3.mp3")
);

Each player has an unique generated id, you can retrieve or create them manually using

final player = AssetsAudioPlayer.withId(id: "MY_UNIQUE_ID");

🗄️ Playlist

assetsAudioPlayer.open(
  Playlist(
    assetAudioPaths: [
      "assets/audios/song1.mp3",
      "assets/audios/song2.mp3"
    ]
  )
);

assetsAudioPlayer.next();
assetsAudioPlayer.prev();
assetsAudioPlayer.playAtIndex(1);

🎧 Listeners

All listeners exposes Streams Using RxDart, AssetsAudioPlayer exposes some listeners as ValueObservable (Observable that provides synchronous access to the last emitted item);

🎵 Current song

//The current playing audio, filled with the total song duration
assetsAudioPlayer.current //ValueObservable<PlayingAudio>

//Retrieve directly the current played asset
final PlayingAudio playing = assetsAudioPlayer.current.value;

//Listen to the current playing song
assetsAudioPlayer.current.listen((playingAudio){
    final asset = playingAudio.assetAudio;
    final songDuration = playingAudio.duration;
})

⌛ Current song duration

//Listen to the current playing song
final duration = assetsAudioPlayer.current.value.duration;

⏳ Current position (in seconds)

assetsAudioPlayer.currentPosition //ValueObservable<Duration>

//retrieve directly the current song position
final Duration position = assetsAudioPlayer.currentPosition.value;

return StreamBuilder(
    stream: assetsAudioPlayer.currentPosition,
    builder: (context, asyncSnapshot) {
        final Duration duration = asyncSnapshot.data;
        return Text(duration.toString());  
    }),

▶ IsPlaying

boolean observable representing the current mediaplayer playing state

assetsAudioPlayer.isPlaying // ValueObservable<bool>

//retrieve directly the current player state
final bool playing = assetsAudioPlayer.isPlaying.value;

//will follow the AssetsAudioPlayer playing state
return StreamBuilder(
    stream: assetsAudioPlayer.isPlaying,
    builder: (context, asyncSnapshot) {
        final bool isPlaying = asyncSnapshot.data;
        return Text(isPlaying ? "Pause" : "Play");  
    }),

🔊 Volume

Change the volume (between 0.0 & 1.0)

assetsAudioPlayer.setVolume(0.5);

The media player can follow the system "volume mode" (vibrate, muted, normal) Simply set the respectSilentMode optional parameter as true

_player.open(PLAYABLE, respectSilentMode: true);

https://developer.android.com/reference/android/media/AudioManager.html?hl=fr#getRingerMode()

https://developer.apple.com/documentation/avfoundation/avaudiosessioncategorysoloambient

Listen the volume

return StreamBuilder(
    stream: assetsAudioPlayer.volume,
    builder: (context, asyncSnapshot) {
        final double volume = asyncSnapshot.data;
        return Text("volume : $volume");  
    }),

✋ Finished

Called when the current song has finished to play,

it gives the Playing audio that just finished

assetsAudioPlayer.playlistAudioFinished //ValueObservable<Playing>

assetsAudioPlayer.playlistAudioFinished.listen((Playing playing){
    
})

Called when the complete playlist has finished to play

assetsAudioPlayer.playlistFinished //ValueObservable<bool>

assetsAudioPlayer.playlistFinished.listen((finished){
    
})

🔁 Looping

final bool isLooping = assetsAudioPlayer.loop; //true / false

assetsAudioPlayer.loop = true; //set loop as true

assetsAudioPlayer.isLooping.listen((loop){
    //listen to loop
})

assetsAudioPlayer.toggleLoop(); //toggle the value of looping

Notifications

on iOS, it will use MPNowPlayingInfoCenter

1. Add metas inside your audio

final audio = Audio("/assets/audio/country.mp3", 
    metas: Metas(
            title:  "Country",
            artist: "Florent Champigny",
            album: "CountryAlbum",
            image: MetasImage.asset("assets/images/country.jpg"), //can be MetasImage.network
          ),
   );

2. open with showNotification: true

_player.open(audio, showNotification: true)

Network Policies (android/iOS)

Android only allow HTTPS calls, you will have an error if you're using HTTP, don't forget to add INTERNET permission and seet usesCleartextTraffic="true" in your AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
    <uses-permission android:name="android.permission.INTERNET" />
    <application
        ...
        android:usesCleartextTraffic="true"
        ...>
        ...
    </application>
</manifest>

iOS only allow HTTPS calls, you will have an error if you're using HTTP, don't forget to edit your info.plist and set NSAppTransportSecurity to NSAllowsArbitraryLoads

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

🌐 Web Support

Web support is using import_js_library to import the Howler.js library

The flutter wrapper of Howler has been exported in another package : https://github.com/florent37/flutter_web_howl

🎶 Musics

All musics used in the samples came from https://www.freemusicarchive.org/