iOS 开发中常用的宏定义

#define iOS7 ([[UIDevice currentDevice].systemVersion doubleValue] >= 7.0)

// RGB颜色

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

#define HWNotificationCenter [NSNotificationCenter defaultCenter]

#ifdef DEBUG // 处于开发阶段

#define HWLog(...) NSLog(__VA_ARGS__)

#else // 处于发布阶段

#define HWLog(...)

#endif