iphone – 调用AudioServicesPlaySystemSound时有2个错误？

概述我正在制作一个应用程序,一旦计时器达到一定的限制振动. 但是,在打电话时 AudioServicesPlaySystemSound(kSystemSoundID_Vibrate); Xcode出现两个错误： Undefined symbols for architecture i386: "_AudioServicesPlaySystemSound", referenced from: 我正在制作一个应用程序,一旦计时器达到一定的限制振动.

但是,在打电话时

AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);

Xcode出现两个错误：

Undefined symbols for architecture i386:  "_AudioServicesPlaySystemSound",referenced from:      -[drawGraph drawRect:] in drawGraph.old: symbol(s) not found for architecture i386

和

clang: error: linker command Failed with exit code 1 (use -v to see invocation)

有关导致这些错误的原因的任何想法？

解决方法 如果您只是不必添加头文件,如上所示,必须在项目中添加框架.你应该在下面的标题. #import< AudioToolBox / AudioToolBox.h>

In Xcode,click your project file at the top of the Project Navigator.

Click ‘YourProjectname’ under “Targets”

Click the “Build Phases” tab.

Click the plus in the “link Binary With librarIEs” window.

Add the AudioToolBox.Framework library

Add #import <AudioToolBox/AudioToolBox.h>

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