將UIColor轉換爲RGB值

//將UIColor轉換爲RGB值
- (NSMutableArray *) changeUIColorToRGB:(UIColor *)color
{
    NSMutableArray *RGBStrValueArr = [[NSMutableArray alloc] init];
    NSString *RGBStr = nil;
    //獲得RGB值描述
    NSString *RGBValue = [NSString stringWithFormat:@"%@",color];
    //將RGB值描述分隔成字符串
    NSArray *RGBArr = [RGBValue componentsSeparatedByString:@" "];
    //獲取紅色值
    int r = [[RGBArr objectAtIndex:1] intValue] * 255;
    RGBStr = [NSString stringWithFormat:@"%d",r];
    [RGBStrValueArr addObject:RGBStr];
    //獲取綠色值
    int g = [[RGBArr objectAtIndex:2] intValue] * 255;
    RGBStr = [NSString stringWithFormat:@"%d",g];
    [RGBStrValueArr addObject:RGBStr];
    //獲取藍色值
    int b = [[RGBArr objectAtIndex:3] intValue] * 255;
    RGBStr = [NSString stringWithFormat:@"%d",b];
    [RGBStrValueArr addObject:RGBStr];
    //返回保存RGB值的數組
    return [RGBStrValueArr autorelease];
}