Ios 苹果'；s LoadPresetDemo不工作

当我运行苹果的

LoadPresetDemo

sample时，它应该会播放通过点击按钮发出的midi信号发出的声音，示例代码停止工作，我不知道该怎么办

我得到的唯一线索是这个输出

2013-01-28 03:41:52.842 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:52.848 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:52.886 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:52.892 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:52.931 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:53.051 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:53.061 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:53.066 Load Presets[586:10703] 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: /Users/tj/Documents/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
 in /System/Library/Frameworks/Security.framework/Versions/A/Security
2013-01-28 03:41:53.081 Load Presets[586:10703] *** Assertion failure in -[MainViewController configureAndStartAudioProcessingGraph:], /Users/tj/Developer/LoadPresetDemo/LoadPresetDemo/Classes/MainViewController.m:169
2013-01-28 03:41:53.113 Load Presets[586:10703] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'AudioUnitSetProperty (set Sampler unit output stream sample rate). Error code: -10865 'è’ˇˇ''
*** First throw call stack:
(0x1891022 0x133bcd6 0x1839a48 0xe352cb 0x3052 0x50a3 0x1fda 0x49c386 0x49d274 0x4ac183 0x4acc38 0x4a0634 0x2e4def5 0x1865195 0x17c9ff2 0x17c88da 0x17c7d84 0x17c7c9b 0x49cc65 0x49e626 0x1f0c 0x1e75)
terminate called throwing an exception(lldb) 

我知道我需要先读一本初学者的书，但有时也有机会。我得做些我不知道的事。 我所需要的就是正确构建并运行示例代码

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你能告诉我怎么办吗？或者我可以查看其他日志窗口吗？与android一样，它也有输出和日志。

您可能需要包括安全框架。参考Xcode帮助应该很容易做到

您可能需要包括安全框架。参考Xcode帮助应该很容易做到

多谢各位。我现在知道我不知道的了。你指的是通常已知的未知还是以前未知的未知？非常常见的事情，如何在项目中添加框架。另外，添加安全框架并没有在最后几行删除NSInternalInconsistencyException。我无法在xCode模拟器上运行它，但它可以在我的iPad上运行。我不知道为什么，谢谢你。我现在知道我不知道的了。你指的是通常已知的未知还是以前未知的未知？非常常见的事情，如何在项目中添加框架。另外，添加安全框架并没有在最后几行删除NSInternalInconsistencyException。我无法在xCode模拟器上运行它，但它可以在我的iPad上运行。我不知道为什么。