我的mac cocoa应用程序在10.8和10.9上正常工作,除了10.7(全新安装),启动时出现此错误:未找到符号:_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)
我检查了系统磁盘,在forlder /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
中可以使用AppKit框架 很奇怪,不是吗? 谢谢你的帮助...答案 0 :(得分:1)
我通过删除所有代码中的这一行来修复此问题:
//self.layer = _layer; //Not necessary at all
self.wantsLayer = YES; //Necessary since 10.8
非常感谢您的帮助!