单例的PCH宏定义

最新推荐文章于 2022-09-23 14:26:05 发布

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#iOS #单例

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#define SingleH(name) +(instancetype)share##name;

#if __has_feature(objc_arc)
///ARC
#define SingleM(name) static id  _instance;\
+(instancetype)allocWithZone:(struct _NSZone *)zone\
{\
    static dispatch_once_t onceToken;\
    dispatch_once(&onceToken, ^{\
        _instance = [super allocWithZone:zone];\
    });\
    return _instance;\
}\
+(instancetype)share##name\
{\
    return [[self alloc]init];\
}\
-(id)copyWithZone:(NSZone *)zone\
{\
    return _instance;\
}\
\
-(id)mutableCopyWithZone:(NSZone *)zone\
{\
    return _instance;\
}


#else
//MRC
#define SingleM(name) static id  _instance;\
+(instancetype)allocWithZone:(struct _NSZone *)zone\
{\
static dispatch_once_t onceToken;\
dispatch_once(&onceToken, ^{\
_instance = [super allocWithZone:zone];\
});\
return _instance;\
}\
+(instancetype)share##name\
{\
return [[self alloc]init];\
}\
-(id)copyWithZone:(NSZone *)zone\
{\
return _instance;\
}\
\
-(id)mutableCopyWithZone:(NSZone *)zone\
{\
return _instance;\
}\
-(oneway void)release\
{}\
\
-(instancetype)retain\
{\
    return _instance;\
}\
\
-(NSUInteger)retainCount\
{\
    return MAXFLOAT;\
}

#endif