电商直播系统_电商直播源码中购物车功能实现

有一次淘宝搞活动，有姐妹跟我吐槽，说她在购物车一键下单商品，被淘宝提示最多只能一次下单50个商品，导致一些商品没有抢到……在电商直播系统中，购物车功能是非常常见且重要的基础功能，它负责暂时存放用户感兴趣但仍在考虑的商品，方便用户进行比较，同时可以通过多个商品一键下单的方式实现促销功能。

在本篇文章中，你可以学到，云豹科技是如何在云豹电商直播源码中实现购物车功能的。

一、编辑功能

首先，设置右上角的编辑功能

self.rightBtn.hidden = NO;[self.rightBtn setTitle:YZMsg(@"编辑") forState:0];[self.rightBtn setTitleColor:[UIColor blackColor] forState:0];[self initData];[self.view addSubview:self.carTable];

二、底部全选功能

UI包括全选功能、删除功能、结算功能

-(void)createBottom{bottomView = [[UIView alloc]initWithFrame:CGRectMake(0, _window_height-50, _window_width, 50)];bottomView.backgroundColor = [UIColor whiteColor];[self.view addSubview:bottomView];allSelBtn = [UIButton buttonWithType:0];allSelBtn.frame = CGRectMake(0, 10, 80, 30);[allSelBtn setImage:[UIImage imageNamed:@"记录未选"] forState:0];[allSelBtn setImage:[UIImage imageNamed:@"记录选中"] forState:UIControlStateSelected];[allSelBtn setTitle:YZMsg(@"全选") forState:0];allSelBtn.titleLabel.font = [UIFont systemFontOfSize:14];[allSelBtn setTitleColor:[UIColor blackColor] forState:0];[allSelBtn setTitleEdgeInsets:UIEdgeInsetsMake(0, 10, 0, 0)];[allSelBtn addTarget:self action:@selector(allSelClick:) forControlEvents:UIControlEventTouchUpInside];[bottomView addSubview:allSelBtn];deleteBtn = [UIButton buttonWithType:0];deleteBtn.frame = CGRectMake(_window_width-90, 10, 80, 30);[deleteBtn setTitleColor:normalColors forState:0];[deleteBtn setTitle:@"删除" forState:0];deleteBtn.titleLabel.font = [UIFont systemFontOfSize:14];deleteBtn.layer.cornerRadius = 15;deleteBtn.layer.borderColor = normalColors.CGColor;deleteBtn.layer.borderWidth = 1;deleteBtn.layer.masksToBounds = YES;[deleteBtn addTarget:self action:@selector(deleteClick) forControlEvents:UIControlEventTouchUpInside];[bottomView addSubview:deleteBtn];subView = [[UIView alloc]initWithFrame:CGRectMake(_window_width/2, 0, _window_width/2, 50)];subView.backgroundColor = [UIColor whiteColor];[bottomView addSubview:subView];submitBtn = [UIButton buttonWithType:0];submitBtn.frame = CGRectMake(subView.width-125, 7, 115, 36);submitBtn.layer.cornerRadius = 18;submitBtn.layer.masksToBounds = YES;CAGradientLayer *gradientLayer = [CAGradientLayer layer];gradientLayer.frame = submitBtn.bounds;gradientLayer.startPoint = CGPointMake(0, 0);gradientLayer.endPoint = CGPointMake(1, 0);gradientLayer.locations = @[@(0),@(1.0)];//渐变点[gradientLayer setColors:@[(id)[RGB(252, 87, 48) CGColor],(id)[RGB(253, 125, 59) CGColor]]];//渐变数组[submitBtn.layer addSublayer:gradientLayer];[submitBtn setTitle:@"结算(0)" forState:0];[submitBtn setTitleColor:[UIColor whiteColor] forState:0];// [submitBtn setBackgroundColor:normalColors];submitBtn.titleLabel.font = [UIFont systemFontOfSize:14];[submitBtn addTarget:self action:@selector(SettlementClick) forControlEvents:UIControlEventTouchUpInside];[subView addSubview:submitBtn];allPriceLb = [[UILabel alloc]init];allPriceLb.font = [UIFont systemFontOfSize:14];NSString *normalStr = @"合计:¥0";NSMutableAttributedString *contentStr = [[NSMutableAttributedString alloc] initWithString:normalStr];NSRange redRange = NSMakeRange(3, normalStr.length-3);[contentStr addAttributes:@{NSForegroundColorAttributeName:[UIColor orangeColor],NSFontAttributeName:[UIFont boldSystemFontOfSize:16]} range:redRange];allPriceLb.attributedText = contentStr;[subView addSubview:allPriceLb];[allPriceLb mas_makeConstraints:^(MASConstraintMaker *make) {make.right.equalTo(submitBtn.mas_left).offset(-5);make.centerY.equalTo(submitBtn.mas_centerY);}];}

三、主体页面

用tableview来展示，初始化界面以及设置代理

-(UITableView *)carTable{if (!_carTable) {_carTable = [[UITableView alloc]initWithFrame:CGRectMake(0, 64+statusbarHeight, _window_width, _window_height-64-statusbarHeight) style:UITableViewStylePlain];_carTable.delegate = self;_carTable.dataSource = self;_carTable.separatorStyle = UITableViewCellSeparatorStyleNone;_carTable.mj_header = [MJRefreshHeader headerWithRefreshingBlock:^{[self requstData];}];_carTable.mj_footer = [MJRefreshBackFooter footerWithRefreshingBlock:^{[self requstData];}];}return _carTable;}

四、计算选中商品的价格

头部分组选中，在section上设置选中按钮，当点击按钮时选中当前分组，再次点击取消选中，同时计算选中商品的价格。

这里多说一句，我们文章开头提到的，某宝一次最多下单五十个商品，一是有对运营方面的考量，比如对客户信用值的考虑，二是为了缓解技术压力，尤其是在双十一等活动日，各种优惠措施叠加，计算选中商品的价格的时间会被延长，很容易影响加载时间，甚至导致服务器宕机，为避免这类尴尬情况，某宝不得已出台了相关措施。

电商直播系统一旦到了某个体量，就不得不出台一定的限制措施来节约资源了。

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{ShopCarListModel*listModel = self.listArr[section];_headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"ShopHistoryHeader"];if (_headerView == nil) {_headerView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, _window_width, 40)];_headerView.backgroundColor = [UIColor whiteColor];}_headerView.tag = section;sectionBtn = [UIButton buttonWithType:0];sectionBtn.frame = CGRectMake(15, 8, 22, 22);sectionBtn.tag = section;[sectionBtn setImage:[UIImage imageNamed:@"记录未选"] forState:UIControlStateNormal];[sectionBtn setImage:[UIImage imageNamed:@"记录选中"] forState:UIControlStateSelected];[sectionBtn addTarget:self action:@selector(sectionBtnClick:) forControlEvents:UIControlEventTouchUpInside];[self.headerView addSubview:sectionBtn];sectionBtn.hidden = YES;UIImageView *shopicon = [[UIImageView alloc]init];shopicon.layer.cornerRadius = 13;shopicon.layer.masksToBounds = YES;[shopicon sd_setImageWithURL:[[self.infos[section] valueForKey:@"shop_info"] valueForKey:@"avatar"]];[_headerView addSubview:shopicon];sectionBtn.hidden = NO;shopicon.frame = CGRectMake(sectionBtn.right+10, 5, 26, 26)UILabel *dateLb = [[UILabel alloc]init];// dateLb.frame = CGRectMake(shopicon.right+10, 8, _window_width, 22);dateLb.text = [[self.infos[section] valueForKey:@"shop_info"] valueForKey:@"name"];dateLb.font = [UIFont systemFontOfSize:14];dateLb.textColor = [UIColor blackColor];[_headerView addSubview:dateLb];[dateLb mas_makeConstraints:^(MASConstraintMaker *make) {make.left.equalTo(shopicon.mas_right).offset(5);make.centerY.equalTo(shopicon.mas_centerY);}];UIImageView *rightImg = [[UIImageView alloc]init];rightImg.image = [UIImage imageNamed:@"shop_right"];[_headerView addSubview:rightImg];[rightImg mas_makeConstraints:^(MASConstraintMaker *make) {make.left.equalTo(dateLb.mas_right);make.centerY.equalTo(dateLb.mas_centerY);make.width.height.mas_equalTo(16);}];sectionBtn.selected = listModel.groupSelected;if (listModel.goods_list.count == 0) {return nil;}return self.headerView;}

五、电商直播源码中商品全选功能实现

首先修改全选按钮的状态。如果头部按钮不是选中状态，则调用头部选中按钮的方法选中整个分组

#pragma mark-----全部选择---------(void)allSelClick: (UIButton*)allSelectedBtn{allSelectedBtn.selected = !allSelectedBtn.selected; // 修改全选按钮的状态if (allSelectedBtn.selected) { // 如果全选按钮改变了为选中for (int i = 0; i <self.listArr.count; i ++) {ShopCarListModel * listModel = self.listArr[i];if (!listModel.groupSelected) {//遍历如果组不是选中状态[self headerSelectedBtnClick:i]; //模拟组头点击了一次}}}else{for (int i = 0; i < self.listArr.count; i ++) { // 遍历所有的组头点击[self headerSelectedBtnClick:i];}}}

六、头部分组点击选中功能实现

从数据源中依次取出列表的外层model，设置临时属性记录数量，设置里层model的选中状态，当个数相同时，整个分组成六、 全部选中状态

- (void)headerSelectedBtnClick:(NSInteger)section {ShopCarListModel*listModel = self.listArr[section];listModel.groupSelected = !listModel.groupSelected;// 判断如果点击 | header选中if (listModel.groupSelected) {// /// 判断组头的点击改变全选按钮NSInteger tempGroupSelectNum = 0;for (ShopCarListModel *model in self.listArr) {if (model.groupSelected) {tempGroupSelectNum ++;}if (tempGroupSelectNum == self.listArr.count) {allSelBtn.selected = YES;}}for (ShopCarModel* goodsModel in listModel.goods_list) {if (!goodsModel.isSelected) { //下面不是选中状态的cellgoodsModel.isSelected = YES;}}} else { // 取消header选中 所有都取消//全选按钮变为不选中allSelBtn.selected = NO;for (ShopCarModel* goodsModel in listModel.goods_list) {goodsModel.isSelected = NO;}}[_carTable reloadData];[self getAllPric];}

七、 电商直播源码中商品删除功能实现

从数据源中取出相应的model，如果model 的状态是选中状态，则放入选中数组，处理数据上传接口

-(void)deleteClick{[selectHistory removeAllObjects];for (int i = 0; i < self.listArr.count; i ++) {ShopCarListModel*listModel = self.listArr[i];for (ShopCarModel* goodsModel in listModel.goods_list) {if (goodsModel.isSelected) {[selectHistory addObject:goodsModel];}}}NSString *delId = @"";for (ShopCarModel *model in selectHistory) {delId = [delId stringByAppendingFormat:@"%@,",model.idStr];}NSRange range = NSMakeRange(delId.length-1, 1);delId = [delId stringByReplacingCharactersInRange:range withString:@""];NSString *url = [purl stringByAppendingFormat:@"?service=Buyer.delShopCartGoods"];NSDictionary *signdic = @{@"uid":[Config getOwnID],@"token":[Config getOwnToken], @"time":[NSNumber numberWithLong: (long)[[NSDate date] timeIntervalSince1970]]};NSString *sign = [YBToolClass dynamicSortString:signdic];NSDictionary *dic = @{@"uid":[Config getOwnID],@"token":[Config getOwnToken],@"time":[NSNumber numberWithLong: (long)[[NSDate date] timeIntervalSince1970]],@"goodsids":delId,@"sign":sign};NSLog(@"-=-=-=-=:%@", dic);[YBNetworking postWithUrl:url Dic:dic Suc:^(NSDictionary *data, NSString *code, NSString *msg) {if ([code isEqual:@"0"]) {[self requstData];}else{[MBProgressHUD showError:msg];}} Fail:^(id fail) {}];}

以上就是本文全部内容，该源代码节选自云豹电商直播系统源码，仅供参考，如需商用请支持正版。

声明：以上内容为作者：云豹科技官方 本人原创，未经作者本人同意，禁止转载，否则将追究相关法律责任