ARC 禁止在结构或联合中使用 Objective-C 对象,尽管标记了文件 -fno-objc-arc?为什么会这样?
ARC forbids Objective-C objects in structs or unions despite marking the file -fno-objc-arc? Why is this so?
我假设如果你标记它 -fno-objc-arc 你没有这个限制.
I had the assumption that if you mark it -fno-objc-arc you don't have this restriction.
如果您收到此消息,请尝试 __unsafe_unretained.只有在结构中的对象未被保留时,它才是安全的.示例:如果您将 OpenFeint 与 ARC 一起使用,则 OFBragDelegateStrings 类会在结构中显示此错误.
If you got this message try __unsafe_unretained. It is only safe, if the objects in the struct are unretained. Example: If you use OpenFeint with ARC the Class OFBragDelegateStrings says this error in a struct.
typedef struct OFBragDelegateStrings
{
NSString* prepopulatedText;
NSString* originalMessage;
} OFBragDelegateStrings;
到
typedef struct OFBragDelegateStrings
{
__unsafe_unretained NSString* prepopulatedText;
__unsafe_unretained NSString* originalMessage;
} OFBragDelegateStrings;
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