做一个可删除的淘宝购物页面

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项目实现的功能：把商品显示到tableView上，并且给商品分商家，比如，有玩具类商家，糕点类商家，小吃类商家等等。点击每一个商品时，也就是tableView上的每一个cell 都会出现一个对勾，再点击一次对勾就消失，对勾是accessoryType属性中的一种形式，点击全选则全部商品都选上对勾，选择反选则原来没有对勾的选上对勾，原来有对勾的去掉对勾，点击删除时，会出现一个警告框，询问是否要删除，当点击确定时，所有选中的商品都被删除，当一个商家的所有商品都被删除时，这个商家的头标题也会消失。

这是plist文件：里面根据个人需要想添加多少商家类和商品都可以

这是页面：商品所在的页面是一个tableViewy页面，可以拖动的

下面是程序：还有两个类做数据模型，比较简单就没上传

Goods类的头文件：

// Goods.h

// 购物车表格删除1

// Created by gaopeng on 15-1-7.

#import <Foundation/Foundation.h>

@interface Goods : NSObject

@property (nonatomic,copy)NSString *icon;

@property (nonatomic,copy)NSString *name;

@property (nonatomic,copy)NSString *details;

-(id)initWith:(NSDictionary *)dic;

+(id)goodWith:(NSDictionary *)dic;

@end

Goods类的m文件：

// Goods.m

// 购物车表格删除1

// Created by gaopeng on 15-1-7.

#import "Goods.h"

@implementation Goods

-(id)initWith:(NSDictionary *)dic

{

if (self = [super init])

{

self.icon = [dic objectForKey:@"icon"];

self.name = self.icon = [dic objectForKey:@"icon"];

self.name = [dic objectForKey:@"name"];

self.details = [dic objectForKey:@"details"];

}

return self;

}

+(id)goodWith:(NSDictionary *)dic

{

Goods *good = [[Goods alloc]initWith:dic];

return good;

}

@end

Shop类的头文件：

// Shop.h

// 购物车表格删除1

// Created by gaopeng on 15-1-7.

#import <Foundation/Foundation.h>

@interface Shop : NSObject

@property (nonatomic,copy) NSString *storeName;

@property (nonatomic,copy) NSArray *storeGood;

+(id)shopWith:(NSDictionary *)dic;

@end

Shop类的m文件：

// Shop.m

// 购物车表格删除1

// Created by gaopeng on 15-1-7.

#import "Shop.h"

@implementation Shop

+(id)shopWith:(NSDictionary *)dic

{

Shop *shop = [Shop new];

shop.storeName = [dic objectForKey:@"shopName"];

shop.storeGood = [dic objectForKey:@"shopGoods"];

return shop;

}

@end

ViewController类头文件：

// ViewController.h

// 购物车表格删除1

// Created by gaopeng on 15-1-7.

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITableView *tableView;

@property (weak, nonatomic) IBOutlet UIBarButtonItem *all;

@property (weak, nonatomic) IBOutlet UIBarButtonItem *opposite;

@property (weak, nonatomic) IBOutlet UIBarButtonItem *dele;

- (IBAction)cliDelBtn:(UIBarButtonItem *)sender;

- (IBAction)cliAllBtn:(UIBarButtonItem *)sender;

- (IBAction)cliOppositeBtn:(UIBarButtonItem *)sender;

@end

ViewController类m文件：

// ViewController.m

// 购物车表格删除1

// Created by gaopeng on 15-1-7.

#import "ViewController.h"

#import "Goods.h"

#import "Shop.h"

@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>

{

//用来存放每一个店铺的全部商品，有几个商家就有数组几个元素，每一个元素都是一个店铺的全部商品

NSMutableArray *_goodsAry;

//用来存商家

NSMutableArray *_shopAry;

//用来存被打对勾的行的商品对象

NSMutableArray *_selectAry;

//用来接收plist文件中的数据

NSArray *_ary;

}

@end

@implementation ViewController

- (void)viewDidLoad

{

[superviewDidLoad];

_goodsAry = [NSMutableArrayarray];

_selectAry = [NSMutableArrayarray];

_shopAry = [NSMutableArrayarray];

//取数据

_ary = [NSArrayarrayWithContentsOfFile:[[NSBundlemainBundle] pathForResource:@"ShoppingGoodsList"ofType:@"plist"]];

#pragma mark 最重要的部分，一定要理解

//========================================================================

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

{

NSMutableArray *ary = [NSMutableArrayarray];

Shop *shop = [ShopshopWith:_ary[i]];

[_shopAryaddObject:shop];

for (int j=0; j<[[_ary[i]objectForKey:@"shopGoods"]count]; j++)

{

Goods *good = [GoodsgoodWith:[_ary[i]objectForKey:@"shopGoods"][j]];

[aryaddObject:good];

}

[_goodsAryaddObject:ary];

}

//========================================================================

_tableView.dataSource =self;

_tableView.delegate =self;

}

#pragma mark 分组

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

return_goodsAry.count;

}

#pragma mark 设置行距

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

return 120;

}

#pragma mark 设置每个分区有几行

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

return [_goodsAry[section]count];

}

#pragma mark 给每一行添加内容

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

//tableView中cell的重用

static NSString *idGood =@"goods";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:idGood];

if (cell==nil)

{

cell = [[UITableViewCellalloc] initWithStyle:UITableViewCellStyleSubtitlereuseIdentifier:nil];

}

Goods *good = _goodsAry[indexPath.section][indexPath.row];

cell.imageView.image = [UIImageimageNamed:good.icon];

cell.textLabel.text = good.name;

cell.detailTextLabel.text = good.details;

cell.detailTextLabel.numberOfLines =0;

cell.detailTextLabel.textColor = [UIColorbrownColor];

#pragma mark 判断当前行的商品是否在选中数组中，若是则让该行显示对号

//判断是否在数组中，如果是则打对勾。

if ([_selectArycontainsObject:good])

{

cell.accessoryType =UITableViewCellAccessoryCheckmark;

}

else

{

cell.accessoryType =UITableViewCellAccessoryNone;

}

return cell;

}

#pragma mark 设置头标题

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

return [_shopAry[section]storeName];

}

#pragma mark 点击每一行触发的事件

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

[tableView deselectRowAtIndexPath:indexPathanimated:YES];

Goods *good = _goodsAry[indexPath.section][indexPath.row];

//2.判断该商品是否在选中数组中

if ([_selectArycontainsObject:good])

{

[_selectAryremoveObject:good];

}

else

{

[_selectAryaddObject:good];

}

//3.刷新表格（只会刷新屏幕上看到的行的信息）

// [tableView reloadData];

[tableView reloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];

}

#pragma mark 点击警告框中的确定

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

NSMutableArray *indexAry = [NSMutableArrayarray];

if (buttonIndex==1)

{

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

{

for (int j=0; j<_goodsAry.count; j++)

{

if ([_goodsAry[j]containsObject:_selectAry[i]])

{

NSIndexPath *path = [NSIndexPathindexPathForRow:[_goodsAry[j]indexOfObject:_selectAry[i]]inSection:j];

[indexAryaddObject:path];

}

//2.2在商品数组中删除所选中的全部商品

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

{

for (int j=0; j<_goodsAry.count; j++)

{

if ([_goodsAry[j]containsObject:_selectAry[i]])

{

[_goodsAry[j]removeObject:_selectAry[i]];

}

//2.3清空盛放所有选中商品的数组

[_selectAryremoveAllObjects];

//2.4刷新列表

[_tableViewdeleteRowsAtIndexPaths:indexAry withRowAnimation:UITableViewRowAnimationRight];

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

{

if ([_goodsAry[i]count]==0)

{

[_goodsAryremoveObject:_goodsAry[i]];

//从数据模型中把商家信息删除

[_shopAryremoveObjectAtIndex:i];

}

if ([_goodsArycount]==0)

{

_all.enabled =NO;

_opposite.enabled =NO;

_dele.enabled =NO;

}

[_tableViewreloadData];

}

- (void)didReceiveMemoryWarning

{

[superdidReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

#pragma mark 点击删除按钮

- (IBAction)cliDelBtn:(UIBarButtonItem *)sender {

if ([_selectArycount]==0)

{

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"警告"message:@"请选择要删除的商品" delegate:selfcancelButtonTitle:@"确定" otherButtonTitles:nil];

[alertshow];

}

else

{

UIAlertView *alert = [[UIAlertViewalloc]initWithTitle:@"删除商品" message:@"确定从购物车中删除所选中打商品？" delegate:self cancelButtonTitle:@"取消"otherButtonTitles:@"确定",nil];

[alertshow];

}

#pragma mark 点击全选，则所有行都打上对勾

- (IBAction)cliAllBtn:(UIBarButtonItem *)sender {

static BOOL a=NO;

if (a==NO)

{

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

{

for (int j=0; j<[_goodsAry[i]count]; j++)

{

[_selectAryaddObject:_goodsAry[i][j]];

}

a=YES;

}

else if (a==YES)

{

[_selectAryremoveAllObjects];

a=NO;

}

[_tableView reloadData];

}

#pragma mark 点击反选按钮，则以打钩的行取消打钩，没打钩的行打钩

- (IBAction)cliOppositeBtn:(UIBarButtonItem *)sender {

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

{

for (int j=0; j<[_goodsAry[i]count]; j++)

{

if ([_selectArycontainsObject:_goodsAry[i][j]])

{

[_selectAryremoveObject:_goodsAry[i][j]];

}

else

{

[_selectAryaddObject:_goodsAry[i][j]];

}

[_tableView reloadData];

}

@end

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