iPhone: How to play a sound on top of the iPod sound?

Question

I'm trying to play a sound on top of the iPod music but when I enter my app the iPod sound is silenced automatically. I tried:

UInt32 sessionCategory = kAudioSessionCategory_AmbientSound; 
        AudioSessionSetProperty (kAudioSessionProperty_AudioCategory,                                 
                                 sizeof (sessionCategory),
                                 &sessionCategory                                 
                                 );

But probably because I use RemoteIO/Audio Units to play my sound this has no effect (not sure if that's the cause, but it sure thing does nothing ... the sound still stops)

I am missing something?

score 3 · Answer 1 · answered May 29 '11 at 13:07

3

For some reason, the code in the question doesn't work, however this works:

[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryAmbient error: nil];

answered May 29 '11 at 13:07

Rad'Val

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score 1 · Accepted Answer · answered May 29 '11 at 14:09

1

AudioSessionSetProperty returns an error, are you checking it?

You may have forgotten to call AudioSessionInitialize, something you don't need to do with the AVFoundation wrapper.

answered May 29 '11 at 14:09

Rhythmic Fistman

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indeed, i didn't call `AudioSessionInitialize`, however, strange enough I checked at it returned no error, will choose your answer because it explains why the above code is not working – Rad'Val May 29 '11 at 14:12

score 0 · Answer 3 · answered Apr 20 '17 at 06:17

@property (nonatomic, strong) AVAudioPlayer * avAudioPlayer;


NSString *zeroAudioPath = [[NSBundle mainBundle] pathForResource:@"customSound" ofType:@"wav"];
NSURL *file = [[NSURL alloc] initFileURLWithPath:zeroAudioPath];
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:file
                                                                 error:nil];
self.avAudioPlayer = audioPlayer;
self.avAudioPlayer.delegate = self;
[_zeroAudioPlayer prepareToPlay];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:&error];
[_zeroAudioPlayer play];

Hope it will help you.

iPhone: How to play a sound on top of the iPod sound?

3 Answers3