如何在目标c中解析给定的JSON数据并显示在表格单元格中

Question

我有两个数组。 对节说A ，在其中说行B 如何访问它们以显示numberOfRowsInSection以及有关要在单元格中显示的节的行。

我的JSON如下：

{
    "data": {
        "claims": [{
            "id": "64",
                "first_name": "Alia",
                "last_name": "Bhatt",
                "vendorimage": "http://projects.kleward.com/salesaward/beta1.5/public/profileImage/img1445325413.jpeg",
                "claimlist": [{
                "campaign_end_date": "2016-10-31",
                    "days": "362",
                    "promotion_id": "7",
                    "promotion_name": "Promotion 1 Jeans",
                    "promotion_description": " Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Description  Promotion Descripti",
                    "totalClaim": "1",
                    "totatAmount": "200.00000"
            }]
        }, {
            "id": "65",
                "first_name": "Life",
                "last_name": "Style",
                "vendorimage": "http://projects.kleward.com/salesaward/beta1.5/public/profileImage/img1445331248.jpg",
                "claimlist": [{
                "campaign_end_date": "2016-11-23",
                    "days": "385",
                    "promotion_id": "9",
                    "promotion_name": "Promotion 3 Wrist Watch",
                    "promotion_description": "Promotion 3 Wrist Watch Description",
                    "totalClaim": "1",
                    "totatAmount": "300.00000"
            }]
        }, {
            "id": "76",
                "first_name": "Snap",
                "last_name": "Deal",
                "vendorimage": "http://projects.kleward.com/salesaward/beta1.5/public/profileImage/img1445851551.png",
                "claimlist": [{
                "campaign_end_date": "2016-12-29",
                    "days": "421",
                    "promotion_id": "10",
                    "promotion_name": "Dell Promotion",
                    "promotion_description": "Dell Promotion Description",
                    "totalClaim": "1",
                    "totatAmount": "50.00000"
            }, {
                "campaign_end_date": "2016-12-30",
                    "days": "422",
                    "promotion_id": "16",
                    "promotion_name": "Mac Promotion",
                    "promotion_description": "Mac Promotion Description",
                    "totalClaim": "1",
                    "totatAmount": "150.00000"
            }]
        }]
    }
}

Answer 1

    NSArray *sectionArray = [[dictionary objectForKey:@"data"] objectForKey:@"claims"];
    NSInteger sectionAmount = [sectionArray count];

    for(NSDictionary *detailDict in sectionArray){
      NSInteger detailID = [[detailDict objectForKey:@"id"] integerValue];
      NSString *firstName = [detailDict objectForKey:@"first_name"];

      //And so on, do stuff here with each detail
    }

Answer 2

按以下结构解析JSon

• 维护包含每个部分的行数的NSArray。
• 为每个部分维护包含NSDictionary的数组，例如将Section作为键，将Array作为值。

餐桌装饰

• 使用容量Array A计数初始化数组，并保存每个节的行数。 要装饰行，请使用节索引来获取方法“节中的行数”中的行数
• 从NSDictionary传递节索引获取数组，以装饰节中的行。

Answer 3

正如我在您的JSON示例中的Section是claims ， claims中的对象是rows 。 如果是，那么每件事都很简单：

JSON-是收入数据

NSDictionary * dict = [JSON objectForKey:@"data"];

获取在numberOfSection中使用的节

NSArray * sectionTitles = [dict allKeys];

条数

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{
    return [sectionTitles count];
}

部分中的行数

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{
    NSString * sectionTitle = [sectionTitles objectAtIndex:section];
    NSArray * rows = [dict objectForKey:sectionTitle];
    return [rows count];
}

indexPath当前部分的行

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
    // init Cell

    // Get Section Title from indexPath
    NSString * sectionTitle = [sectionTitles objectAtIndex:indexPath.section];

    // Get Array of object for Section
    NSArray * objects = [dict objectForKey:sectionTitle];

    // Get Object for row
    NSDictionary * object = [objects objectAtIndex:indexPath.row];

    // Use it
    NSString * objectID = [object objectForKey:@"id"];

   // return cell;
}

显示节标题

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section 
{
    return [sectionTitles objectAtIndex:section];
}