iOS开发常用宏

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//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 lue:((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)