宏

来源：互联网发布：java发送邮件原理编辑：程序博客网时间：2024/05/16 10:26

//release屏蔽NSLog
//放在.pch文件里
#ifdef DEBUG

#else
#define NSLog(...) {};
#endif

//G。C。D
#define BACK(block) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block)
#define MAIN(block) dispatch_async(dispatch_get_main_queue(),block)

//Device
#define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)

谢谢16楼提出的 “判断Retina设备建议使用[[UIScreen mainScreen] scale]==2，不然横屏下那个宏定义判断的有问题 ”

#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)

#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

//区分模拟器和真机

#if TARGET_OS_IPHONE
//iPhone Device
#endif

#if TARGET_IPHONE_SIMULATOR
//iPhone Simulator
#endif

//ARC
#if __has_feature(objc_arc)
//compiling with ARC
#else
// compiling without ARC
#endif

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