AVAudioPlayer error loading file

I am trying to use the AVAudioPlayer to play a simple sound and I keep getting this error in the console:

2011-09-02 20:29:07.369 MusicLog[967:10103] Error loading /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn:  dlopen(/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn, 262): Symbol not found: ___CFObjCIsCollectable
  Referenced from: /System/Library/Frameworks/Security.framework/Versions/A/Security
  Expected in: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPho开发者_JAVA技巧neSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security

Here is my code that should play a sound when my button is pressed:

NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"tick" ofType:@"caf"];
NSError *error;

    NSURL *soundURL = [NSURL fileURLWithPath:soundPath];
    AVAudioPlayer *tickPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundURL error:&error];
[tickPlayer setDelegate:self];
[tickPlayer setNumberOfLoops:0];
[tickPlayer prepareToPlay];
if (tickPlayer == nil)
{
    NSLog(@"%@", [error description]);
}
else
{
    [tickPlayer play];
}

Do I somehow have the file in the wrong place? I just dragged the file into the project and selected copy if needed.

EDIT: After more testing I found that I do not get this error when running IOS 4.2 simulator, only on the IOS 5 simulator. Can I assume that this is a bug in iOS 5?

Thanks,

I've had the same problem. It only seems to be a problem on iOS5 in simulator. I haven't tested on an iOS 5 device yet. I keep hoping XCode upgrades will make the error go away, but so far no luck.

I've had the same error, but the sound played nonetheless after I keep the variable as a class attribute. If the code that you put here is written inside a method, try moving this variable. I guess the sound didn't play because the audioPlayer instance is lost after the method went out of scope.

@implementation SomeAudioController {
    AVAudioPlayer *tickPlayer;
}

Make your AVAudioPlayer a property w/ a strong reference.

Source: AVAudioPlayer refuses to play anything, but no error, etc

The above answer helped me to play the .wav file in my simulator, but I haven't gotten it to work on my device yet. Something about missing codecs..?

Edit:

For the audio to play on the device, I also had to add the following line to AppDelegate.m's didFinishLaunchingWithOptions:

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

Try to check if you have enabled the "All Exceptions" breakpoint, which will result in the debugger breaks at the exception instead. Just disable this feature and built it again.

I also had the same type of error when I tried to play some mp3 files on button click and compiled to iOS5. The error disappeared when I compiled to iOS4 but the sound still doesn't come out. There was no runtime error and the NSLogs printed properly in the debug console. Did you find a way to play your mp3 files?

From Multimedia Programming Guide:

Preferred Audio Formats in iOS For uncompressed (highest quality) audio, use 16-bit, little endian, linear PCM audio data packaged in a CAF file. You can convert an audio file to this format in Mac OS X using the afconvert command-line tool, as shown here:

/usr/bin/afconvert -f caff -d LEI16 {INPUT} {OUTPUT}

The afconvert tool lets you convert to a wide range of audio data formats and file types. See the afconvert man page, and enter afconvert -h at a shell prompt, for more information.

For compressed audio when playing one sound at a time, and when you don’t need to play audio simultaneously with the iPod application, use the AAC format packaged in a CAF or m4a file.

For less memory usage when you need to play multiple sounds simultaneously, use IMA4 (IMA/ADPCM) compression. This reduces file size but entails minimal CPU impact during decompression. As with linear PCM data, package IMA4 data in a CAF file.