iOS 开发使用16进制色值设置颜色

//传入的色值为：#3f51b5

self.title.textColor = [selfcolorFromHexRGB:@"3f51b5"];​

//转换16进制色值为UIColor对象

- (UIColor *) colorFromHexRGB:(NSString *) inColorString

{

UIColor *result = nil;

unsigned int colorCode = 0;

unsigned char redByte, greenByte, blueByte;

if (nil != inColorString)

{

NSScanner *scanner = [NSScanner scannerWithString:inColorString];

(void) [scanner scanHexInt:&colorCode]; // ignore error

}

redByte = (unsigned char) (colorCode >> 16);

greenByte = (unsigned char) (colorCode >> 8);

blueByte = (unsigned char) (colorCode); // masks off high bits

result = [UIColor

colorWithRed: (float)redByte / 0xff

green: (float)greenByte/ 0xff

blue: (float)blueByte / 0xff

alpha:1.0];

return result;

}