*号码OC呈现

+(NSArray*)splitCode:(NSString*)code backzoneIndex:(NSInteger*)outIndex
{
    /*
     01
     0102|0304
     010203040506|01
     |01
     */
    NSInteger backzoneIndex = 0;
    
    NSArray* zoneArr = [code componentsSeparatedByString:@"|"];
    if (nil == zoneArr || [zoneArr count] != 2)
        return nil;
    
    NSMutableArray* splitArr = [NSMutableArray array];
    NSString* prozoneStr = zoneArr[0];
    for (int i = 0; i < [prozoneStr length]; i+= 2)
    {
        NSString* str = [prozoneStr substringWithRange:NSMakeRange(i, 2)];
        [splitArr addObject:str];
    }
    backzoneIndex = [splitArr count];
    
    
    NSString* backzoneStr = zoneArr[1];
    for (int i = 0; i < [backzoneStr length]; i+= 2)
    {
        NSString* str = [backzoneStr substringWithRange:NSMakeRange(i, 2)];
        [splitArr addObject:str];
    }
    *outIndex = backzoneIndex;
    return splitArr;
}

+(NSString*)stdCode:(NSString*)code
{
    if ([CommonHelper isEmpty:code])
        return @"";
    //将,分隔,两位分隔,空格分隔的code转换成无分隔的code
    NSRange r = [code rangeOfString:@","];
    if (r.location != NSNotFound)
    {
        NSString* newCode = [code stringByReplacingOccurrencesOfString:@"," withString:@""];
        return newCode;
    }
    r = [code rangeOfString:@" "];
    {
        NSString* newCode = [code stringByReplacingOccurrencesOfString:@" " withString:@","];
        return newCode;
    }
    return code;
}
+(UIView*)makeLotteryView:(NSString*)code font:(UIFont*)font height:(CGFloat)height sep:(CGFloat)sep borderColor:(UIColor*)boderColor prozoneColor:(UIColor*)prozoneColor backzoneColor:(UIColor*)backzoneColor
{
    NSString* stdCode = [MyLotteryShoppingCartViewController stdCode:code];
    if ([CommonHelper isEmpty:stdCode])
        return nil;
    NSInteger backzoneIndex = 0;
    NSArray* codeArr = [MyLotteryShoppingCartViewController splitCode:stdCode backzoneIndex:&backzoneIndex];
    if ([CommonHelper isEmptyArray:codeArr])
        return nil;
    NSInteger codeCount = [codeArr count];
    CGFloat viewWidth = codeCount*height + (codeCount -1)*sep;
    UIView* contentView = [UIView new];
    CGRect rect = CGRectMake(0, 0,viewWidth,height);
    [contentView setFrame:rect];
    CGFloat codeX = 0;
    CGFloat codeY = 0;
    CGFloat codeSep = sep;
    CGFloat codeW = height;
    CGFloat codeH = height;
    for(int i = 0; i< codeCount;i++)
    {
        NSString* codeStr = codeArr[i];
        rect = CGRectMake(codeX, codeY, codeW, codeH);
        UILabel* lblCode = [[UILabel alloc]initWithFrame:rect];
        [lblCode setBackgroundColor:[UIColor clearColor]];
        [lblCode setFont:font];
        [lblCode.layer setCornerRadius:height/2];
        [lblCode.layer setMasksToBounds:YES];
        [lblCode.layer setBorderWidth:1];
        lblCode.layer.borderColor = boderColor.CGColor;
        [lblCode setTextColor:(i >= backzoneIndex) ? backzoneColor :prozoneColor];
        [lblCode setText:codeStr];
        [lblCode setTextAlignment:NSTextAlignmentCenter];
        [contentView addSubview:lblCode];
        codeX += codeW+ codeSep;
    }
    return contentView;
}

第一个版本,先用View顶过去,后面考虑drawRect,目前看对帧率是有影响的