Question

So I added a sound (.wav) in my UIButton when pressed, but It outputs this in the Debugger, can anyone explain or help me on what this is :

2012-06-21 10:29:51.784 PhotoSlot[817:1dc0b] The default input device's sample rate was changed.
2012-06-21 10:29:51.786 PhotoSlot[817:21a2b] Audio device's sample rate changed. You may need to restart the simulator.
2012-06-21 10:29:51.786 PhotoSlot[817:1dd0f] Default audio device changed. Restart the simulator to have it use the newly-selected device.

Here is my code for the sound:

NSString* resourcePath = [[NSBundle mainBundle] resourcePath];
resourcePath = [resourcePath stringByAppendingString:@"/push.wav"];
    //Initialize our player pointing to the path to our resource
player = [[AVAudioPlayer alloc] initWithContentsOfURL:
          [NSURL fileURLWithPath:resourcePath] error:NULL];
//set our delegate and begin playback
player.delegate = self;
[player play];

Thankyou.

2012-06-21 11:24:09.702 PhotoSlot[1578:1a303] Error loading
/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn:
dlopen(/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn,
262): Symbol not found: __CFObjCIsCollectable Referenced from:
/System/Library/Frameworks/Security.framework/Versions/A/Security
Expected in:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:09.711 PhotoSlot[1578:1a303] Error loading
/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn:
dlopen(/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/AudioIPCPlugIn,
262): Symbol not found: __CFObjCIsCollectable Referenced from:
/System/Library/Frameworks/Security.framework/Versions/A/Security
Expected in:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:09.996 PhotoSlot[1578:1a303] 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:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:10.006 PhotoSlot[1578:1a303] 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:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:10.024 PhotoSlot[1578:1a303] 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:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:10.033 PhotoSlot[1578:1a303] 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:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:10.053 PhotoSlot[1578:1a303] 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:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /System/Library/Frameworks/Security.framework/Versions/A/Security
2012-06-21 11:24:10.071 PhotoSlot[1578:1a303] 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:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation

Answer 1

Ahhh, posting the error helps me out. I found this closely related question which also has the same output as what you’re seeing.

But I think the real solution you should be doing (assuming you’re using ARC), is found in this other answer: you need to keep a strong reference for your “AVAudioPlayer” instance around while the sound is playing. Make your player a “strong” ivar (instance variable) and before playing a new sound, set “self.player = nil;” and that should fix your problem.

Also, turn off all breakpoints in your simulator debugger and see if you have better luck.