iphone - AVAudioPlayer gives no sound output

Question

I have imported audio toolbox and avfoundation to my class and added the frameworks to my project and am using this code to play a sound:

- (void)playSound:(NSString *)name withExtension:(NSString *)extension
{
    NSURL* soundUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:name ofType:extension]]; 
    AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:nil];
    audioPlayer.delegate = self;
    audioPlayer.volume = 1.0;
    [audioPlayer play];
}

I call it like this:

[self playSound:@"wrong" withExtension:@"wav"];

However I get zero sound.

Answer 1

Updated answer:

I've got the issue. It's with ARC and has nothing to do with prepareForPlay. Simply make a strong reference to it and it will work.

as stated below by user: Kinderchocolate :)

In code:

.h
~
@property (nonatomic, strong) AVAudioPlayer *player;


.m
~
@implementation
@synthesize _player = player;