UI给开发的效果图非常多时候标注着十六进制的Color,而程序中用到的往往是UIColor能够用例如以下方法去转换:

(UIColor *)RGBColorFromHexString:(NSString *)color alpha:(float)alpha { //color的值相似#fffeee,alpha的值相似1.0为透明度

	int nums[6] = {0};

	for (int i = 1; i < [color length]; i++) {

		int temp = [color characterAtIndex:i];

		if (temp >= '0' && temp <= '9') {

			nums[i-1] = [color characterAtIndex:i] - '0';

		}else if(temp >= 'A' && temp <= 'F') {

			nums[i-1] = [color characterAtIndex:i] - 'A' + 10;

		}else if(temp >= 'a' && temp <= 'f') {

			nums[i-1] = [color characterAtIndex:i] - 'a' + 10;

		}else {

			return [UIColor whiteColor];

		}

	}

	float rValue = (nums[0] * 16 + nums[1]) / 255.0f;

	float gValue = (nums[2] *16 + nums[3]) / 255.0f;

	float bValue = (nums[4] *16 + nums[5]) / 255.0f;

	UIColor *rgbColor = [UIColor colorWithRed:rValue green:gValue blue:bValue alpha:alpha];

	return rgbColor;

}