颜色相关
// 十六进制颜色
#define UIColorFromRGB(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]
// RGBColor(r, g, b)
#define RGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
长度相关
//屏幕宽度
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
//屏幕高度
#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
