IOS一些有用的macro

// 打印方法运行时间

#define TIME_BEGIN NSDate * startTime = [NSDate date];

#define TIME_END VTLog(@"time interval: %f", -[startTime timeIntervalSinceNow]);

// 设置RGBA颜色值

#define RGBACOLOR(r,g,b,a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]

#define RGBCOLOR(r,g,b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(1.f)]

// 十六进制转UIColor

#define kVTColorFromHex(hexValue) [UIColor \

colorWithRed:((float)((hexValue & 0xFF0000) >> 16))/255.0 \

green:((float)((hexValue & 0xFF00) >> 8))/255.0 \

blue:((float)(hexValue & 0xFF))/255.0 alpha:1.0]

// 判断设备是否是iPhone

#define kiPhoneDevice ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)

// tabbar高度

#define VTTABBAR_HEIGHT (49)

// 状态栏高度

#define VTSTATUSBAR_HEIGHT (20)