未找到符号

本文介绍了未找到符号_OBJC_IVAR _ $ _ NSView._layer（在AppKit中）仅在10.7上，在10.8和10.9上正常工作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我的mac可可应用程序工作正常10.8和10.9除了10.7（全新安装）与此错误在开始：符号未找到：_OBJC_IVAR _ $ _ NSView._layer

My mac cocoa app works fine on 10.8 and 10.9 except on 10.7 (fresh install) with this error at start : Symbol not found: _OBJC_IVAR_$_NSView._layer

Process: xxx [875] Path: /Users/USER/Desktop/xxx.app/Contents/MacOS/xxx Identifier: com.xxx.xxx Version: 1.0 (1) Code Type: X86-64 (Native) Parent Process: launchd [127] Date/Time: 2014-02-13 17:44:24.208 +0100 OS Version: Mac OS X 10.7.5 (11G63) Report Version: 9 Crashed Thread: 0 Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Application Specific Information: dyld: launch, loading dependent libraries Dyld Error Message: Symbol not found: _OBJC_IVAR_$_NSView._layer Referenced from: /Users/USER/Desktop/xxx.app/Contents/MacOS/xxx Expected in: /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit in /Users/USER/Desktop/xxx.app/Contents/MacOS/xxx

（xxx = appname）

(xxx = appname)

我在系统磁盘上检查过，AppKit框架在forlder / System / Library / Frameworks /AppKit.framework/Versions/C/AppKit

I checked on system disk, AppKit framework is fine in the forlder /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit

很奇怪，不是吗？ 谢谢任何帮助...

Weird, isn't it ? Thank you for any help ...

推荐答案

我通过删除我的所有代码：

I fixed the issue by remove this lines in all of my code :

//self.layer = _layer; //Not necessary at all self.wantsLayer = YES; //Necessary since 10.8

非常感谢您的帮助！