iOS 通过HEX(十六进制)得到一个UIColor的对象

inline static UIColor* getColorFromHex(NSString *hexColor)
{
    
    if (hexColor == nil) {
        return nil;
    }
    
    unsigned int red, green, blue;
    NSRange range;
    range.length = 2;
    
    range.location = 1; 
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
    range.location = 3; 
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
    range.location = 5; 
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];	
    
    return [UIColor colorWithRed:(float)(red/255.0f) green:(float)(green/255.0f) blue:(float)(blue/255.0f) alpha:1.0f];
}