ios - 将 NSDictionary 转换为 UITableView

Question

我正在尝试将 NSDictionary 数据放入 TableView 中。但我在访问值时遇到问题。

字典看起来是这样的:

multimedia =     {
        uploads =         {
            upload =             (
                                {
                    FileName =                     {
                        text = "\n      1-FB5A9792.MOV";
                    };
                    status =                     {
                        text = "\n      2";
                    };
                    Event =                     {
                        text = "\n      Test";
                    };
                    Date =                     {
                        text = "\n      9/7/2016 9:06:21 AM";
                    };
                    Publicacion =                     {
                        text = "\n      Example";
                    };
                    Seccion =                     {
                        text = "\n      Sistemas";
                    };
                    id =                     {
                        text = "\n  \n    \n      993";
                    };
                    text = "\n    ";
                },
                                {
                    FileName =                     {
                        text = "\n      2-FB5A9793.MOV";
                    };
                    status =                     {
                        text = "\n      2";
                    };
                    Event =                     {
                        text = "\n      Test";
                    };
                    Date =                     {
                        text = "\n      9/7/2016 9:06:21 AM";
                    };
                    Publicacion =                     {
                        text = "\n      Example";
                    };
                    Seccion =                     {
                        text = "\n      Sistemas";
                    };
                    id =                     {
                        text = "\n    \n      994";
                    };
                    text = "\n    ";
                },
                                {
                    FileName =                     {
                        text = "\n      1-IMG_0006.MOV";
                    };
                    status =                     {
                        text = "\n      2";
                    };
                    Event =                     {
                        text = "\n      Highest";
                    };
                    Date =                     {
                        text = "\n      9/7/2016 4:56:37 PM";
                    };
                    Publicacion =                     {
                        text = "\n      Example";
                    };
                    Seccion =                     {
                        text = "\n      Sistemas";
                    };
                    id =                     {
                        text = "\n    \n      995";
                    };
                    text = "\n    ";
                },...

我使用 XMLReader 将 XML 转换为字典，然后将上述数据传递给 tableData

 tableData = [jsonDictionary allKeys];

表格

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [tableData count];
}

创建单元格

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ...
    NSString *key = [tableData objectAtIndex:indexPath.row];
    NSDictionary *dictionary = [jsonDictionary objectForKey:key];
    // get values from the dictionary and set the values for the displayed cell ...

    return cell;
}

我尝试为每个文件名和状态值放置一个单元格，在本例中为每个文件名放置 3 个单元格。但我不知道如何做到这一点或获取 FileName 的计数。

这是 XML

<multimedia>
  <uploads>
    <upload>
      <id>1136</id>
      <Date>9/9/2016 11:01:58 AM</Date>
      <FileName>IMG_0510.MOV</FileName>
      <status>2</status>
      <Publicacion>Example</Publicacion>
      <Seccion>Sistemas</Seccion>
      <Event>Q</Event>
    </upload>
  </uploads>
</multimedia>

Answer 1

在我看来，计数应该是 1。

原始 jsonDictionary 只有一项。您应该更深入地了解上传，然后调用计数。

key @"upload"里面有数组。所以，jsonDictionary[@"multimedia"][@"uploads"][@"upload"]应该返回 array .如果将其转换为 NSDictionary它会返回错误的结果，如果您尝试获取键 File name 的值，您将得到错误的结果。 .

字典的主要目的是让特定的键只有一个值。这就是为什么你只得到一个 File name ，如果将数组转换为 NSDictionary .

所以:

NSArray * array = _xmlDictionary[@"multimedia"][@"uploads"][@"upload"];
NSDictionary * onUpload = array[i];
NSDictionary * fileName = array[i][@"FileName"];
NSString * fileNameString = array[i][@"FileName"][@"text"];

所以在你的情况下:

tableData = jsonDictionary[@"multimedia"][@"uploads"][@"upload"];

然后

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ...
    NSDictionary *upload = [tableData objectAtIndex:indexPath.row];
    NSString *fileName = upload[@"FileName"][@"text"];
    NSString *status = upload[@"status"][@"text"];
    NSString *event = upload[@"event"][@"text"];
    ...

    return cell;
}