iOS5 Retina显示屏设备属性与颜色宏使用教程-优快云博客

本文链接：https://blog.youkuaiyun.com/huxiaoqiao163/article/details/38963077

本文详细介绍了iOS5设备属性判断方法，包括是否为Retina显示屏、iPhone5、pad等，并提供了颜色宏的使用教程，帮助开发者高效地进行iOS应用开发。

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#define SharedAppDelegate ((AppDelegate *)[UIApplication sharedApplication].delegate)
#define StandardUserDefaults [NSUserDefaults standardUserDefaults]

//过期
#define DEPRECATED(_version) __attribute__((deprecated))

//singleton
#define SYNTHESIZE_SINGLETON_FOR_HEADER(className) \
\
+ (className *) sharedInstance;

#define SYNTHESIZE_SINGLETON_FOR_CLASS(className) \
\
+ (className *)sharedInstance { \
static className *sharedInstance = nil; \
static dispatch_once_t onceToken; \
dispatch_once(&onceToken, ^{ \
sharedInstance = [[self alloc] init]; \
}); \
return sharedInstance; \
}

/////////////////////////////////////////// device ////////////////////////////////////////////
//判断是否是Retina显示屏
#define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
//判断是否是iPhone5
#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define isInch4 [UIScreen mainScreen].bounds.size.height==568
//判断是否是pad
#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
//主屏宽
#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
//主屏高
#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)
//当前设备的ios版本
#define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
//当前设备的语言
#define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

/////////////////////////////////////////// color ////////////////////////////////////////////
//RGB Color macro
#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]

//RGB color macro with alpha
#define UIColorFromRGBWithAlpha(rgbValue,a) [UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \
green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \
blue:((float)(rgbValue & 0xFF))/255.0 alpha:a]

#endif