//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]
//开发的时候打印，但是发布的时候不打印的
#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
//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]
//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)
