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Audio playback

The AudioPlayer class provides you with the ability to play audio files/streams in your .NET MAUI application. In order to create an AudioPlayer instance you can make use of the CreatePlayer method on the AudioManager class.

public class AudioPlayerViewModel
{
    readonly IAudioManager audioManager;

    public AudioPlayerViewModel(IAudioManager audioManager)
    {
        this.audioManager = audioManager;
    }

    public async void PlayAudio()
    {
        var audioPlayer = audioManager.CreatePlayer(await FileSystem.OpenAppPackageFileAsync("ukelele.mp3"));

        audioPlayer.Play();
    }
}

Configure the playback options

When calling CreatePlayer it is possible to provide an optional parameter of type AudioPlayerOptions, this parameter makes it possible to customize the playback settings at the platform level. Note that currently you can only customize options for iOS and macOS.

The following example shows how to configure your audio to blend in with existing audio being played on device:

audioManager.CreatePlayer(
    await FileSystem.OpenAppPackageFileAsync("ukelele.mp3"),
    new AudioPlayerOptions
    {
#if IOS || MACCATALYST
        CategoryOptions = AVFoundation.AVAudioSessionCategoryOptions.MixWithOthers
#endif
    });

AudioPlayer API

Once you have created an AudioPlayer you can interact with it in the following ways:

Events

The AudioPlayer class provides the following events:

PlaybackEnded

Raised when audio playback completes successfully.

Properties

The AudioPlayer class provides the following properties:

Balance

Gets or sets the balance left/right: -1 is 100% left : 0% right, 1 is 100% right : 0% left, 0 is equal volume left/right.

CanSeek

Gets a value indicating whether the position of the loaded audio file can be updated.

CanSetSpeed

Gets a value indicating whether the playback speed can be changed.

CurrentPosition

Gets the current position of audio playback in seconds.

Duration

Gets the length of audio in seconds.

IsPlaying

Gets a value indicating whether the currently loaded audio file is playing.

MaximumSpeed

Gets the maximum speed that is supported on the platform the app is running on that can be set for the Speed property.

MinimumSpeed

Gets the minimum speed that is supported on the platform the app is running on that can be set for the Speed property.

Speed

Gets or sets the speed of the playback. Note: the maximum and minimum value that can be set is dependant on the platform you're running on. Setting a value that is not supported on the platform will gracefully fallback, but will not have the desired result.

To determine the supported minimum and maximum speeds at runtime for that platform you can use MaximumSpeed and MinimumSpeed.

Platform notes:

  • Android: between 0 and 6. Setting the value to 0 will pause playback, playback will not be resumed when incrementing the value again.
  • iOS: between 0.5 and 2.
  • Windows: between 0 and 8. Setting the value to 0 will pause playback, playback will be resumed when incrementing the value again.

Volume

Gets or sets the playback volume 0 to 1 where 0 is no-sound and 1 is full volume.

Loop

Gets or sets whether the player will continuously repeat the currently playing sound.

Methods

The AudioPlayer class provides the following methods:

Pause()

Pause playback if playing (does not resume).

Play()

Begin playback or resume if paused.

Seek(double position)

Set the current playback position (in seconds).

Stop()

Stop playback and set the current position to the beginning.

Sample

For a concrete example of playing audio in a .NET MAUI application check out our sample application and specifically the MusicPlayerPageViewModel class.