Ios5 在ios中播放mp3文件失败

可能重复：

我对iphone应用程序的开发还很陌生。我想在我的应用程序中播放.mp3文件。 这是我尝试使用的代码片段。“dd.mp3”是支持文件下的文件。但它不起作用。我做错什么了吗

NSError *error=nil;
NSURL *audioURL =[[NSBundle mainBundle] URLForResource:@"dd" withExtension:@"mp3"];
AVAudioPlayer *avPlayerObject = [[AVAudioPlayer alloc] initWithContentsOfURL:audioURL error:&error];

if(avPlayerObject)
{
 [avPlayerObject play];
}

当我运行这段代码时，我得到以下错误输出

2012-08-08 06:46:30.802服务测试[408:10703]加载错误/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/audioipcpplugin:dlopen（/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/audioipcpplugin.bundle/Contents/MacOS/audioipcpplugin，262）：找不到符号：\ uuuuuuuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:30.895 serviceTest[408:10703]加载错误/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/AudioIPCPlugIn.bundle/Contents/MacOS/audioipcpplugin:dlopen（/System/Library/Extensions/AudioIPCDriver.kext/Contents/Resources/audioipcpplugin.bundle/Contents/MacOS/audioipcpplugin，262）：找不到符号：\ uuuuuuuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:31.196服务测试[408:10703]加载错误/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）：找不到符号：uuuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:31.221服务测试[408:10703]加载错误/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）：找不到符号：uuuu cfobjcollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:31.276 serviceTest[408:10703]加载错误/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）：找不到符号：uuuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:31.301服务测试[408:10703]加载错误/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）：找不到符号：uuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:31.358 serviceTest[408:10703]加载错误/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）：找不到符号：uuuuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation 在/System/Library/Frameworks/Security.framework/Versions/A/Security中 2012-08-08 06:46:31.382 serviceTest[408:10703]加载错误/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）：找不到符号：uuuu CFObjCIsCollectable 引用自：/System/Library/Frameworks/Security.framework/Versions/A/Security 应位于：/Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/corefundation.framework/corefundation in/System/Library/Frameworks/Securit

NSString *path = [[NSBundle mainBundle] pathForResource:@"sound" ofType:@"caf"];
self.audioPlayer =[[AVAudioPlayer alloc]initWithContentsOfURL:[NSURL fileURLWithPath:path] error:nil];
[self.audioPlayer setDelegate:self];
[self.audioPlayer prepareToPlay];
[self.audioPlayer play];