MonoTouch的MP3错误

Question

我打一个MP3提供背景音乐，我的iPad上的游戏，而我使用此代码播放的歌曲：

audioPlayer = AVAudioPlayer.FromUrl(NSUrl.FromFilename(fileName)); 

audioPlayer.FinishedPlaying += delegate { audioPlayer.Dispose(); audioPlayer=null; }; 
if (audioPlayer.PrepareToPlay()) 
    audioPlayer.Play(); 

它的工作原理其实，但运行时我得到一个在控制台中加载错误消息。我做错了吗？我应该担心吗？

这是我得到的错误的转储：

2012-05-04 16:22:17.220 Music[42300:22b03] 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  
2012-05-04 16:22:17.223 Music[42300:22b03] 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 
2012-05-04 16:22:17.256 Music[42300:22b03] 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 
2012-05-04 16:22:17.258 Music[42300:22b03] 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 
2012-05-04 16:22:17.260 Music[42300:22b03] 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 
2012-05-04 16:22:17.261 Music[42300:22b03] 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 
2012-05-04 16:22:17.263 Music[42300:22b03] 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 
2012-05-04 16:22:17.264 Music[42300:22b03] 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 

Answer 1

这些错误似乎是无害的（我见过他们了很多，但没有发现任何实际的问题）。

在任何情况下，这些错误都将在未来版本的MonoTouch中修复。