自动布局，防京东商品属性，Label自适应_collectoinview自动布局标签-优快云博客

本文介绍了一种在iOS应用中实现产品属性选择器的方法，包括如何动态创建属性标签、处理标签点击事件以及与产品关联字典数据交互的过程。

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效果如上图所示

//写到获取信息后的请求完成里面

//数据示例*********

{
    Latas =     (
        330ML,
        500ML
    );
    Marca =     (
        Refriango
    );

}

********************/

for (UIView *viewin_selectScrollView.subviews) {
                if (view !=_nameLabel && view !=logoImageView && view !=priceLabel && view !=line_scroll) {
                    [view removeFromSuperview];
                }
            }
            selectYES = [NSMutableArrayarrayWithArray:[[_dataDictobjectForKey:@"attr"]componentsSeparatedByString:@","]];
            _moreHeight =120;
            int j =0;
            int k =1;
            int l =0;
            //BOOL _default = NO;
            for (NSString *keyin details) {
                NSMutableArray *arr = [NSMutableArrayarrayWithArray:[detailsobjectForKey:key]];
             j = 0;

for (int i=0; i<arr.count; i++) {

                   NSString *str = [NSStringstringWithFormat:@"%@",[arrobjectAtIndex:i]];
                    NSDictionary *dictSize = [NSDictionarydictionaryWithObjectsAndKeys:[UIFontsystemFontOfSize:14.0],NSFontAttributeName,nil];
                    CGSize size = [strboundingRectWithSize:CGSizeMake(_selectScrollView.bounds.size.width-100,20)options:NSStringDrawingUsesLineFragmentOriginattributes:dictSizecontext:nil].size;

                    UILabel *label = [[UILabelalloc]init];
                    label.font = [UIFontsystemFontOfSize:14.0];
                    label.textAlignment =NSTextAlignmentCenter;
                    label.layer.cornerRadius =2.0;
                    label.layer.masksToBounds =NO;
                    label.textColor = [UIColorblackColor];
                    label.layer.borderWidth =0.5;
                    label.tag =1000*k + i;
                    label.layer.borderColor =ColorWihtRGB(175,175,175,1.0).CGColor;
                    if (i ==0) {
                        label.frame =CGRectMake(10,_moreHeight+10+l*10, size.width+10,20);
                        _prevWith = size.width+20;
                        _moreThanWideHeight =_moreHeight+10;
                    } else {
                        label.frame =CGRectMake(_prevWith+10,_moreThanWideHeight+l*10, size.width+20,20);
                        _prevWith += size.width+30;
                    }

                    if (_prevWith >_selectScrollView.bounds.size.width-20) {
                        _prevWith =10;
                        label.frame =CGRectMake(_prevWith,_moreThanWideHeight+30+l*10, size.width+20,20);
                        _prevWith = size.width+30;
                        _moreThanWideHeight +=30;
                        //_moreHeight = _moreThanWideHeight;
                        j++;
                    }
                    label.text = str;
                    [_selectScrollViewaddSubview:label];

                    UITapGestureRecognizer *tap = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(attributeSelect:)];
                    label.userInteractionEnabled =YES;
                    [label addGestureRecognizer:tap];

                    for (NSString *strinselectYES) {
                        if ([strisEqualToString:label.text]) {
                            label.layer.borderColor =ColorWihtRGB(240,75,75,1.0).CGColor;
                            break;
                        }
                    }
                }
                UILabel *nameLabel = [[UILabelalloc]initWithFrame:CGRectMake(10,_moreHeight-25+l*10,_selectScrollView.bounds.size.width-20,40)];
                nameLabel.text = key;
                nameLabel.font = [UIFontsystemFontOfSize:14.0];
                [_selectScrollViewaddSubview:nameLabel];
                _moreHeight +=40+j*30;
                k++;
                l++;
            }
            UILabel *nameLabel = [[UILabelalloc]initWithFrame:CGRectMake(10,_moreHeight+l*10-5,_selectScrollView.bounds.size.width-20,20)];
            nameLabel.text =NSLocalizedString(@"数量","Localizable");
            nameLabel.font = [UIFontsystemFontOfSize:14.0];
            [_selectScrollViewaddSubview:nameLabel];

            bgView_num.frame =CGRectMake(10,_moreHeight+20+l*10,93,28);
            [_selectScrollViewaddSubview:bgView_num];

_selectScrollView.contentSize = CGSizeMake(screenWidth-50, _moreThanWideHeight+30+30+30+l*10);

//点击切换产品

//_propertyDict 产品关联字典数据示例************

"details":{

"246":"Refriango,500ML",

"243":"Refriango,330ML"

}

*************************/

- (void)attributeSelect:(UITapGestureRecognizer *)tap {

selectYES = [[NSMutableArrayalloc]init];
        for (UILabel *labelin_selectScrollView.subviews) {
            if ([labelisKindOfClass:[UILabelclass]]) {
                //NSLog(@"%@",label.layer.borderColor);
                label.textColor = [UIColorblackColor];
                if (label.tag/1000 == tap.view.tag/1000) {
                    if (label.tag == tap.view.tag) {
                        NSLog(@"111 == %ld",label.tag);
                        label.layer.borderColor =ColorWihtRGB(240,75,75,1.0).CGColor;
                        [selectYESaddObject:label.text];
                    } else {
                        if(label.layer.borderColor == ColorWihtRGB(240,75,75,1.0).CGColor) {
                            [selectYESaddObject:label.text];
                        } else {
                            NSLog(@"222 == %ld",label.tag);
                            label.layer.borderColor =ColorWihtRGB(175,175,175,1.0).CGColor;
                        }
                    }
                } else {
                    if(label.layer.borderColor == ColorWihtRGB(240,75,75,1.0).CGColor) {
                        [selectYESaddObject:label.text];
                    } else {
                        NSLog(@"222 == %ld",label.tag);
                        //label.layer.borderColor = ColorWihtRGB(175, 175, 175, 1.0).CGColor;
                    }
                }
            }
        }

        BOOL _select =NO;
        for (NSString *key11in_propertyDict) {
            NSArray *arr = [NSMutableArrayarrayWithArray:[[_propertyDictobjectForKey:key11]componentsSeparatedByString:@","]];
            NSPredicate *filterPredicate = [NSPredicatepredicateWithFormat:@"NOT (SELF IN %@)",arr];
            //过滤数组
            NSArray *reslutFilteredArray = [selectYESfilteredArrayUsingPredicate:filterPredicate];

            if (reslutFilteredArray.count ==0) {
                if ([key11integerValue] == [self.good_idintegerValue]) {
                    [buyToCarsetBackgroundColor:[UIColorcolorWithRed:240/255.0green:75/255.0blue:75/255.0alpha:1.0]];
                    buyToCar.selected =YES;
                    return;
                }
                self.good_id = key11;
                _select = YES;
                [buyToCarsetBackgroundColor:[UIColorcolorWithRed:240/255.0green:75/255.0blue:75/255.0alpha:1.0]];
                buyToCar.selected =YES;
                break;
            } else {
                [buyToCarsetBackgroundColor:[UIColorcolorWithRed:175/255.0green:175/255.0blue:175/255.0alpha:1.0]];
                buyToCar.selected =NO;
            }
        }
        if (_select) {
            //NSLog(@"%@",good_id);
            [selfgood_info];//获取商品详情的接口调用
        } else {
            [buyToCarsetBackgroundColor:[UIColorcolorWithRed:175/255.0green:175/255.0blue:175/255.0alpha:1.0]];

buyToCar.selected = NO;

}