Question

我正在尝试将项目转换为ARC，但我在项目中使用ImageKit。 ARC重构工具和我自己的手动重构都会在ImageKit头文件中使用ARC生成错误和警告，这些文件已包含在我自己的源文件中。它们看起来像这样：

In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:9:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFOperation.m:10:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKImageBrowserView.h:176:14: error: the current deployment target does not support automated __weak references [4]
     IBOutlet __weak NSScroller*                   _horizontalScroller;
              ^
<built-in>:115:31: note: instantiated from:
 #define __weak __attribute__((objc_ownership(weak)))
                               ^
In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:9:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFOperation.m:10:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKImageBrowserView.h:177:14: error: the current deployment target does not support automated __weak references [4]
     IBOutlet __weak id                            _delegate;
              ^
<built-in>:115:31: note: instantiated from:
 #define __weak __attribute__((objc_ownership(weak)))
                               ^
In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:9:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFOperation.m:10:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKImageBrowserView.h:179:11: warning: '__strong' only applies to objective-c object or block pointer types; type here is 'void *' [3]
     void* __strong                                _reserved;
           ^
In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:10:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFOperation.m:10:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKImageBrowserCell.h:36:2: error: the current deployment target does not support automated __weak references [4]
         __weak id                   _parent;
         ^
<built-in>:115:31: note: instantiated from:
 #define __weak __attribute__((objc_ownership(weak)))
                               ^

当我将项目设置设置为目标10.6时。在定位10.7时，我只是收到警告：

In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:9:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFGenerator.m:12:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKImageBrowserView.h:179:11: warning: '__strong' only applies to objective-c object or block pointer types; type here is 'void *' [3]
     void* __strong                                _reserved;
           ^
In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:10:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFGenerator.m:12:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKImageBrowserCell.h:37:8: warning: '__strong' only applies to objective-c object or block pointer types; type here is 'void *' [3]
         void* __strong              _ibCellReserved;
               ^
In file included from /Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/ImageKit.h:13:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFController.h:12:
In file included from /Volumes/Macintosh HD/Users/simone/Development/AFGenerator.m:12:
/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Headers/IKPictureTaker.h:31:11: warning: '__strong' only applies to objective-c object or block pointer types; type here is 'void *' [3]
     void *__strong _ikReserved;
           ^
3 warnings generated.

但是，当使用ARC定位10.7时，我至少可以构建并运行我的程序。

这里发生了什么？这是正常的吗？或者ImageKit与ARC不兼容？

Answer 1

原来，Xcode 4.2正在进行barfing，因为我正在导入＆lt; ImageKit / ImageKit.h＆gt;直接，并且只在我的代码中链接了ImageKit框架。对于非ARC代码来说这很好，但ARC并不喜欢这样。

切换到导入＆lt; Quartz / Quartz.h＆gt; （其中包括ImageKit）~~并链接整个Quartz框架~~解决了这个问题。 [更新：看起来你不必链接整个Quartz框架。将导入更改为＆lt; Quartz / Quartz.h＆gt;并保持直接链接ImageKit。]

这很奇怪。

使用ARC进行编译时出现ImageKit错误和警告

1 个答案: