iOS 开发常用宏

来源：iOS_小松哥

链接：http://www.jianshu.com/p/be00c3f3cafd

大家都是知道使用宏不仅方便，而且可以提高开发效率。下面总结了iOS开发过程中的一些常用宏，会持续的往里面添加。

//字符串是否为空

#define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )

//数组是否为空

#define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)

//字典是否为空

#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)

//是否是空对象

#define kObjectIsEmpty(_object) (_object == nil

|| [_object isKindOfClass:[NSNull class]]

|| ([_object respondsToSelector:@selector(length)] && [(NSData *)_object length] == 0)

|| ([_object respondsToSelector:@selector(count)] && [(NSArray *)_object count] == 0))

//获取屏幕宽度与高度

#define kScreenWidth

([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? [UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale : [UIScreen mainScreen].bounds.size.width)

#define kScreenHeight

([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? [UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale : [UIScreen mainScreen].bounds.size.height)

#define kScreenSize

([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? CGSizeMake([UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale,[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale) : [UIScreen mainScreen].bounds.size)

//一些缩写

#define kApplication        [UIApplication sharedApplication]

#define kKeyWindow          [UIApplication sharedApplication].keyWindow

#define kAppDelegate        [UIApplication sharedApplication].delegate

#define kUserDefaults       [NSUserDefaults standardUserDefaults]

#define kNotificationCenter [NSNotificationCenter defaultCenter]

//APP版本号

#define kAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]

//系统版本号

#define kSystemVersion [[UIDevice currentDevice] systemVersion]

//获取当前语言

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

//判断是否为iPhone

#define kISiPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

//判断是否为iPad

#define kISiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

//获取沙盒Document路径

#define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]

//获取沙盒temp路径

#define kTempPath NSTemporaryDirectory()

//获取沙盒Cache路径

#define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]

//判断是真机还是模拟器

#if TARGET_OS_IPHONE

//真机

#endif

#if TARGET_IPHONE_SIMULATOR

//模拟器

#endif

//开发的时候打印，但是发布的时候不打印的NSLog

#ifdef DEBUG

#define NSLog(...) NSLog(@"%s 第%d行 %@ ",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])

#else

#define NSLog(...)

#endif

//颜色

#define kRGBColor(r, g, b)     [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]

#define kRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]

#define kRandomColor  KRGBColor(arc4random_uniform(256)/255.0,arc4random_uniform(256)/255.0,arc4random_uniform(256)/255.0)

#define kColorWithHex(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]

//弱引用/强引用

#define kWeakSelf(type)   __weak typeof(type) weak##type = type;

#define kStrongSelf(type) __strong typeof(type) type = weak##type;

//由角度转换弧度

#define kDegreesToRadian(x)      (M_PI * (x) / 180.0)

//由弧度转换角度

#define kRadianToDegrees(radian) (radian * 180.0) / (M_PI)

//获取一段时间间隔

#define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();

#define kEndTime   NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)

持续更新中……。