iOS 购物车的实现
iOS 购物车的实现
思路: 通过model中绑定一个boll值来判断每一行Cell中的选中按钮, 定义可变数组来保存选中的数据,可方便的传到结算页面. 需要源码的朋友可以留下邮箱啊, 主要代码如下:
@interface ViewController ()<UITableViewDataSource,UITableViewDelegate,tableFootViewDelegate>
@property (weak, nonatomic) IBOutletUITableView *tableView;
@property (nonatomic,strong)TableHaerdView *headerView;
@property (nonatomic,strong)TableFootView *footView;
//存放数据数组
@property (nonatomic,strong)NSMutableArray *dataArray;
//存放数据字典`
@property (nonatomic,strong)NSMutableDictionary *mutableDictionary;
@property (nonatomic,assign)float tempTotalPirce;
@property (nonatomic,strong)NSMutableArray *payArray;
@property (nonatomic,strong)NSMutableArray *isSelectArray;
@end
//cell标识
staticNSString *indentifier = @"cell";
@implementation ViewController
- (void)viewDidLoad {
[superviewDidLoad];
//使用storboard不需要注册cell
[self.tableViewregisterClass:[GoShoppingCellclass] forCellReuseIdentifier:indentifier];
self.title =@"购物车";
//数据源
[selfsetUpModel];
//headerView
[selfsetUpHeaderView];
//footView
[selfsetupFootView];
}
- (void)viewWillAppear:(BOOL)animated{
[superviewWillAppear:animated];
for (int i =0; i< self.dataArray.count; i++) {
GoShoppingModel *model = self.dataArray[i];
model.isSelect =NO;
}
[_tableView reloadData];
}
#pragma mark -- footView
- (void)setupFootView {
_footView = [[TableFootViewalloc]init];
_footView.delegate =self;
// _footView.alpha = 0;
[self.viewaddSubview:_footView];
[_footViewmas_makeConstraints:^(MASConstraintMaker *make) {
make.trailing.leading.equalTo(self.view);
make.height.equalTo(@60);
make.bottom.equalTo(self.view.mas_bottom).offset(0);
}];
}
#pragma mark -- headerView
- (void)setUpHeaderView{
CGRect statusFrame = [[UIApplicationsharedApplication]statusBarFrame];
CGRect navFrame =self.navigationController.navigationBar.frame;
TableHaerdView *headerView = [[TableHaerdViewalloc]initWithFrame:CGRectMake(0, navFrame.size.height+statusFrame.size.height,self.view.frame.size.width,50)];
_headerView = headerView;
//点击全选回调
headerView.slelectBlock =^(NSInteger integer){
//定义临时变量保存价格;
float totalPirce = 0.0;
for (int i =0; i<self.dataArray.count; i++) {
GoShoppingModel *model = self.dataArray[i];
//设置选中状态
model.isSelect = integer;
if (model.isSelect) {
self.footView.alpha =1.0;
//记录总价格
totalPirce += [model.goodsPriceintValue];
//显示价格
self.footView.totalPirce = totalPirce;
//把价格保存到变量里面给后期点击每一个btn使用
self.tempTotalPirce = totalPirce;
[self.payArrayaddObject:model];
}else {
// self.footView.alpha = 0.0;
totalPirce =0.0;
self.tempTotalPirce = totalPirce;
//显示价格
self.footView.totalPirce = totalPirce;
//移除数组防止数据重复
[self.payArrayremoveAllObjects];
}
[self.tableViewreloadData];
}
//如果数组没有数据
if (!self.dataArray.count){
// 提示窗
[selfalertActionControllerWithMessage:@"购物车空空如也!快去挑选宝贝吧!"];
self.headerView.selectBtn.selected =NO;
}
//每次价格都要清除
totalPirce =0.0;
};
[self.viewaddSubview:headerView];
// //设置顶部多余距离
self.automaticallyAdjustsScrollViewInsets=NO;
}
#pragma mark--- footView代理
- (void)tableFootViewWithTableFootView:(TableFootView *)footView{
if (self.tempTotalPirce) {
PayViewController *payVC = [[PayViewControlleralloc]init];
payVC.totalPirce =self.tempTotalPirce;
payVC.payArray =self.payArray.copy;
//移除数组
if (self.dataArray.count ==self.payArray.count) {
[self.dataArrayremoveAllObjects];
}else{
for (int i =0; i<self.payArray.count; i++) {
GoShoppingModel *model = self.payArray[i];
[self.dataArrayremoveObject:model];
}
}
//调到控制器清空数组和总价格
[self.payArrayremoveAllObjects];
self.tempTotalPirce =0.0;
//总价格
self.footView.totalPirce =self.tempTotalPirce;
//全选按钮
self.headerView.isInteger =NO;
[self.navigationControllerpushViewController:payVC animated:NO];
NSLog(@"%lu",(unsignedlong)self.payArray.count);
}else{
//如果没有选择商品提示弹窗
[selfalertActionControllerWithMessage:@"还没有选择宝贝"];
}
}
#pragma mark --提示窗
- (void)alertActionControllerWithMessage:(NSString*)message{
UIAlertController *alertVc = [UIAlertControlleralertControllerWithTitle:@"提示"message:message preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *action = [UIAlertActionactionWithTitle:@"确定"style:UIAlertActionStyleDestructivehandler:^(UIAlertAction *_Nonnull action) {
}];
//[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:nil];
[alertVcaddAction:action];
[selfpresentViewController:alertVc animated:YEScompletion:nil];
}
#pragma mark -- TableView代理方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.dataArray.count;
}
- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
GoShoppingCell *cell = [tableViewdequeueReusableCellWithIdentifier:indentifierforIndexPath:indexPath];
//cell赋值
GoShoppingModel *model = self.dataArray[indexPath.row];
model.tag =@(indexPath.row);
cell.model = model;
//点击btn回调
[selfbtnClickWithCell:cell];
return cell;
}
#pragma mark -- 点击but逻辑处理
- (void)btnClickWithCell:(GoShoppingCell*)cell{
//点击btn回调
cell.selectBlock = ^(UIButton *btn){
self.footView.alpha =1.0;
GoShoppingModel *model = self.dataArray[btn.tag];
if (!btn.selected) {
_tempTotalPirce -= [model.goodsPriceintegerValue];
self.footView.totalPirce =_tempTotalPirce;
model.isSelect =NO;
for (int i =0; i<self.payArray.count; i++) {
GoShoppingModel *payModel = self.payArray[i];
if ([payModel.goodsNameisEqual:model.goodsName]) {
[self.payArrayremoveObjectAtIndex:i];
}
}
}else{
_tempTotalPirce += [model.goodsPriceintegerValue];
self.footView.totalPirce =_tempTotalPirce;
[self.payArrayaddObject:model];
model.isSelect =YES;
if (self.payArray.count ==self.dataArray.count) {
self.headerView.isInteger =YES;
}
}
};
}
#pragma mark - 初始化数据
- (void)setUpModel{
for (int i =0; i<10; i++) {
self.mutableDictionary = [[NSMutableDictionaryalloc]init];
[self.mutableDictionary setValue:[NSStringstringWithFormat:@"iphone%d",i]forKey:@"goodsName"];
[self.mutableDictionarysetValue:[NSStringstringWithFormat:@"%d",i]forKey:@"goodsPrice"];
[self.mutableDictionarysetValue:[NSNumbernumberWithBool:NO]forKey:@"isSelect"];
GoShoppingModel *model = [GoShoppingModelGShoppingModelWithDict:self.mutableDictionary];
[self.dataArrayaddObject:model];
}
}
#pragma mark== 懒加载数组
- (NSMutableArray *)dataArray{
if (!_dataArray) {
_dataArray = [NSMutableArrayarray];
}
return_dataArray;
}
- (void)didReceiveMemoryWarning {
[superdidReceiveMemoryWarning];
}
- (NSMutableArray *)payArray{
if (!_payArray) {
_payArray = [[NSMutableArrayalloc]init];
}
return_payArray;
}
- (NSMutableArray *)isSelectArray{
if (!_isSelectArray) {
_isSelectArray = [NSMutableArrayarray];
}
return_isSelectArray;
}
- (void)dealloc{
[[NSNotificationCenterdefaultCenter ] removeObserver:selfname:@"senderSelect"object:nil];
}
@end
