_OBJC_CLASS _ $ _ OALSuspendHandler在Swift中链接错误

Question

我认为错误是由AVAudioPlayer（）或OALSimpleAudio.sharedInstance（）造成的？它也可能是因为没有安装某个框架，或者这个音频框架可能已被弃用了？

 I am getting this error:


 "_OBJC_CLASS_$_OALSuspendHandler", referenced from:
      objc-class-ref in libcocos2d.a(ALDevice.o)
      objc-class-ref in libcocos2d.a(ALSource.o)
      objc-class-ref in libcocos2d.a(OALAudioTrack.o)
      objc-class-ref in libcocos2d.a(OALAudioTracks.o)
      objc-class-ref in libcocos2d.a(ALContext.o)
      objc-class-ref in libcocos2d.a(OpenALManager.o)
      objc-class-ref in libcocos2d.a(ALListener.o)
      ...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)