iphone - 声音输出含义

Question

所以我在按下时在 UIButton 中添加了一个声音 (.wav)，但它在调试器中输出了这个，任何人都可以解释或帮助我了解这是什么:

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.

这是我的声音代码:

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];

谢谢。

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

啊哈，发布错误可以帮助我解决问题。 I found this closely related question它也具有与您所看到的相同的输出。

但我认为你应该做的真正的解决方案(假设你使用的是 ARC)，is found in this other answer :您需要在播放声音时为您的“AVAudioPlayer”实例保留一个强引用。让你的播放器成为“strong”ivar(实例变量)，在播放新声音之前，设置“self.player = nil;”，这应该可以解决你的问题。

此外，关闭模拟器调试器中的所有断点，看看您是否有更好的运气。