如何设置背景的十六进制颜色代码[重复]

可能的重复：
如何从十六进制字符串创建 UIColor？ https://stackoverflow.com/questions/1560081/how-can-i-create-a-uicolor-from-a-hex-string

我想以编程方式设置 UIView 背景的颜色。

看来我不能通过 Interfacebuilder 来做到这一点。如果我想将其设置为某种十六进制代码颜色，我该怎么做？

我喜欢使用这一小段代码在我的应用程序中使用 HTML 网页颜色。

Usage:

[self.view setBackgroundColor: [self colorWithHexString:@"FFFFFF"]]; /* white */

代码：

-(UIColor*)colorWithHexString:(NSString*)hex  
{  
    NSString *cString = [[hex stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];  

    // String should be 6 or 8 characters  
    if ([cString length] < 6) return [UIColor grayColor];  

    // strip 0X if it appears  
    if ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];  

    if ([cString length] != 6) return  [UIColor grayColor];  

    // Separate into r, g, b substrings  
    NSRange range;  
    range.location = 0;  
    range.length = 2;  
    NSString *rString = [cString substringWithRange:range];  

    range.location = 2;  
    NSString *gString = [cString substringWithRange:range];  

    range.location = 4;  
    NSString *bString = [cString substringWithRange:range];  

    // Scan values  
    unsigned int r, g, b;  
    [[NSScanner scannerWithString:rString] scanHexInt:&r];  
    [[NSScanner scannerWithString:gString] scanHexInt:&g];  
    [[NSScanner scannerWithString:bString] scanHexInt:&b];  

    return [UIColor colorWithRed:((float) r / 255.0f)  
                           green:((float) g / 255.0f)  
                            blue:((float) b / 255.0f)  
                           alpha:1.0f];  
}