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大家都知道使用宏不仅方便，而且可以提高开发效率。下面小卓君搜罗了一些iOS开发过程中的一些常用宏，希望能帮上正在IT路上努力的你们。
//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 \
||[_objectisKindOfClass:[NSNullclass]]\
||([_objectrespondsToSelector:@selector(length)]&&[(NSData*)_objectlength]==0)\
||([_objectrespondsToSelector:@selector(count)]&&[(NSArray*)_objectcount]==0))
//获取屏幕宽度与高度
#define kScreenWidth \
([[UIScreenmainScreen]respondsToSelector:@selector(nativeBounds)]?[UIScreenmainScreen].nativeBounds.size.width/[UIScreenmainScreen].nativeScale:[UIScreenmainScreen].bounds.size.width)
#define kScreenHeight \
([[UIScreenmainScreen]respondsToSelector:@selector(nativeBounds)]?[UIScreenmainScreen].nativeBounds.size.height/[UIScreenmainScreen].nativeScale:[UIScreenmainScreen].bounds.size.height)
#define kScreenSize \
([[UIScreenmainScreen]respondsToSelector:@selector(nativeBounds)]?CGSizeMake([UIScreenmainScreen].nativeBounds.size.width/[UIScreenmainScreen].nativeScale,[UIScreenmainScreen].nativeBounds.size.height/[UIScreenmainScreen].nativeScale):[UIScreenmainScreen].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 \n %@\n\n",__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) \
[UIColorcolorWithRed:((float)((rgbValue&0xFF0000)>>16))/255.0\
green:((float)((rgbValue&0xFF00)>>8))/255.0\
blue:((float)(rgbValue&0xFF))/255.0alpha: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)
来源：iOS_小松哥
www.jianshu.com/p/be00c3f3cafd
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