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This article is about the content of macros used by iOS. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Some commonly used macro judgments, met me in the update, step by step to adhere to

Determine the version of the system

# define IOS_Syteam [UIDevice currentDevice] systemVersion] floatValue]

Color

# define RGBACOLOR [UIColor colorWithRed: (r) / 255.0f green: (G) / 255.0f blue: (B) / 255.0f alpha: (a)]

/ / get screen width and height

# define SCREEN_WIDTH ([UIScreen mainScreen] .bounds.size.width)

# define SCREEN_HEIGHT ([UIScreen mainScreen] .bounds.size.height)

/ / get the current language

# define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

/ / rgb color conversion (hexadecimal-> decimal)

# define UIColorFromRGB (rgbValue) [UIColor colorWithRed: (float) ((rgbValue & 0xFF0000) > 16) / 255.0 green: ((float) ((rgbValue & 0xFF00) > > 8)) / 255.0 blue: ((float) (rgbValue & 0xFF)) / 255.0 alpha:1.0]

Rewrite the print log and current lines in NSLog,Debug mode

# if DEBUG

# define NSLog (FORMAT,...) Fprintf (stderr, "\ nfunction:%s line:%d content:%s\ n", _ _ FUNCTION__, _ _ LINE__, [NSString stringWithFormat:FORMAT, # # _ VA_ARGS__] UTF8String])

# else

# define NSLog (FORMAT,...) Nil

# endif

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