xcode 调用 AudioServicesPlaySystemSound 时出现 2 个错误？
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2 errors when calling AudioServicesPlaySystemSound?
提问by n30ncitylights
I'm making an app which vibrates once a timer reaches a certain limit.
我正在制作一个应用程序，一旦计时器达到某个限制就会振动。
However, when calling
但是，当调用
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
Xcode comes up with two errors:
Xcode 出现两个错误：
Undefined symbols for architecture i386:
"_AudioServicesPlaySystemSound", referenced from:
-[drawGraph drawRect:] in drawGraph.o
ld: symbol(s) not found for architecture i386
and
和
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Any ideas on what is causing these errors?
关于导致这些错误的原因的任何想法？
回答by bitmapdata.com
If you simply must not add the header files only, as shown above, a framework must be added to your project. and you should a following header. #import <AudioToolbox/AudioToolbox.h>
如果您不能只添加头文件，如上所示，则必须将框架添加到您的项目中。你应该有一个下面的标题。#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>
在 Xcode 中，单击项目导航器顶部的项目文件。
单击“目标”下的“您的项目名称”
单击“构建阶段”选项卡。
单击“Link Binary With Libraries”窗口中的加号。
添加 AudioToolbox.Framework 库
添加
#import <AudioToolbox/AudioToolbox.h>
