AVAudioPlayer and AVAudioRecorder: Delegate Methods not Called

Question

My delegate methods audioRecorderDidFinishRecording and audioPlayerDidFinishPlaying are not being called. Those methods should trigger a 'stopanimation` method that stops an animation after recording is finished.

I have placed a call call to the stopanimation method at the end of audioPlayerDidFinishPlaying.

Here is the relevant code where the delegate is assigned:

   VoiceEditor.h

    @interface VoiceEditor : UIViewController <UITextFieldDelegate, AVAudioRecorderDelegate, AVAudioPlayerDelegate>{    
}

VoiceEditor.m

- (void)record{
    recorder = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:pathString] settings:recordSettings error:nil];
    [recorder setDelegate:self];
    [recorder record];
    recording = YES;        
    [pauseButton setImage:[UIImage imageNamed:@"stop.png"] forState:UIControlStateNormal];
    [pauseButton setEnabled:YES];
    [playButton setEnabled:NO];
    [recordButton setEnabled:NO];  
    [self beginAnimation];
}

- (void)play{              
    player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:pathString] error:nil];
    double seconds=[player duration];
    NSLog(@"%f",seconds);
    [player setDelegate:self];
    [player play];
    playing = YES;              
    [recordButton setEnabled:NO];
    [pauseButton setEnabled:YES];
    [playButton setEnabled:NO];     
    [self beginAnimation];
}

Answer 1

Your code setting the delegate looks fine.

Are you assuming that the delegate methods are not called only because the animation does not stop or have you tried to log/breakpoint the methods directly? If you haven't tested directly do so before working on the assumption that they aren't.

If you have confirmed they are not being called the, most likely, your animation is tying up the self object such that it cannot respond to the AV delegate methods.

Comment out the animation and just put a log in the AV delegate methods to see if they are called.