CODEWITHSUNDEEP
c#iosxamarinxamarin.iosavaudioplayer
Stam
Stam

Reputation: 2490

AVAudioPlayer cannot be initialized

In a Xamarin.iOS Application AVAudioPlayer is used to record and play some audio files.

The user records and saves some audio files very fast and when he tries to play one of them it throws a System.Exception in the line:

NSError error;
_player = new AVAudioPlayer(NSUrl.FromFilename(_audioPlaybackFilePath), "m4a", out error);

System.Exception: Could not initialize an instance of the type 'AVFoundation.AVAudioPlayer': the native 'initWithContentsOfURL:fileTypeHint:error:' method returned nil. It is possible to ignore this condition by setting MonoTouch.ObjCRuntime.Class.ThrowOnInitFailure to false.

The file in the given path exists.

  1. Any indications of what the problem might be?
  2. Is there any way to set MonoTouch.ObjCRuntime.Class.ThrowOnInitFailure to false as it states in the Exception StackTrace?

Upvotes: 2

Views: 1564

Answers (3)

anon
anon

Reputation:

In my case, it was because I forgot to specify the extension of the file. The right way to do it (ie: for mp3 files) is :

var soundResource = NSUrl.FromFilename("alert.mp3");

And not

var soundResource = NSUrl.FromFilename("alert");

Upvotes: 0

Christopher Stephan
Christopher Stephan

Reputation: 1141

We got this error using the package Plugin.AudioRecorder which uses AVAudioPlayer. We could fix it by adding the following code to FinishedLaunching:

AudioPlayer.OnPrepareAudioSession = audioSession =>
{
    // maybe force audio to route to the speaker?
    var success = audioSession.OverrideOutputAudioPort (AVAudioSessionPortOverride.Speaker, out NSError error);
};

Upvotes: 0

Hanns
Hanns

Reputation: 1

As @SushilHangover pointed out use AVAudioPlayer.FromData and feed it with a stream like:

    theStream.Position = 0;
    AVAudioPlayer.FromData(NSData.FromStream(theStream));

AND, this is very important, the stream has always be positioned to 0.

Upvotes: 0

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