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 isKindOfClass:[NSNull class]] || array == nil || array.count == 0)

字典是否为空

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

APP版本号

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

系统版本号

#define kSystemVersion [[UIDevice currentDevice] systemVersion]

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