UITableview cell 的多选

利用NSMutableDictionary  key值 来改变cell的状态

-(void)createUI{

table = [[UITableView alloc]initWithFrame:CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height/2.0) style:UITableViewStylePlain];
    [table setSeparatorStyle:UITableViewCellSeparatorStyleNone];
    table.delegate = self;
    table.dataSource = self;
    [self.view addSubview:table];

}
-(void)createData{
  
    dataArr = [[NSMutableArray alloc]init];
    SelectArr = [[NSMutableArray alloc]init];
    
    for (int i=0; i<50; i++) {
        NSString * string = [NSString stringWithFormat:@"测试数据%d",i];
        [dataArr addObject:string];
        NSMutableDictionary * dic = [[NSMutableDictionary alloc]init];
        [dic setObject:@"no" forKey:@"key"];
        [SelectArr addObject:dic];
    }
}

-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    static NSString * stri = @"str";
    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:stri];
    if (cell == nil) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:stri];
    }
    cell.textLabel.text = dataArr[indexPath.row];
    cell.textLabel.textAlignment = NSTextAlignmentCenter;

//多选
    NSString * string = [NSString stringWithFormat:@"%@",SelectArr[indexPath.row][@"key"]];

//可随意更改 图片或者按钮状态
    if (![string isEqualToString:@"no"])
    {
        cell.accessoryType =UITableViewCellAccessoryCheckmark;
    }else
    {
        cell.accessoryType =UITableViewCellAccessoryNone;
    }
    return cell;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    
    return  dataArr.count;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    return 40;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
 
    UITableViewCell *cell = [table cellForRowAtIndexPath:indexPath];
    cell.backgroundColor=[UIColor whiteColor];
    //多选
    NSString * string = [NSString stringWithFormat:@"%@",SelectArr[indexPath.row][@"key"]];
    if ([string isEqualToString:@"no"]) {
        [SelectArr[indexPath.row] setValue:@"yes" forKey:@"key"];
    }else{
        [SelectArr[indexPath.row] setValue:@"no" forKey:@"key"];
    }

//刷新tableview 改变点击状态
    [table reloadData];
}