Question

I have to following JSON response from a server:

   {
  "theSet": [

  ],
  "Identifikation": 1,
  "Name": "Casper",
  "Adress": "Lovis 23",
  "Location": "At home",
  "Information": "The first, the second and the third",
  "Thumbnail": "none",
 }

I am retrieving the data like so:

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {

    NSLog(@"connectionDidFinishLoading");

    NSLog(@"Succeeded! Received %d bytes of data",[data length]);

    NSError *myError = nil;

     NSDictionary *res = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&myError];

      news = [NSArray arrayWithObjects:[res allKeys], [res allValues], nil];

      NSLog(@"%@", news);

    //[mainTableView reloadData];
}

Then I want to insert all the JSON data into an array, so I can display the data in my tableview.

My tableview code:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MainCell"];

    if(cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"MainCell"];
    }

    cell.textLabel.text = [[news objectAtIndex:indexPath.row] objectForKey:@"Name"];
    cell.detailTextLabel.text = [[news objectAtIndex:indexPath.row] objectForKey:@"Adress"];

    return cell;
}

But my app crashes with the error:

-[__NSArrayI objectForKey:]: unrecognized selector sent to instance. 

How can I insert the JSON object into an NSArray, so I can display it in my tableview?

Answer 1

I found a simple solution myself, that fits my project better:

I just did the following:

    NSDictionary *res = [NSJSONSerialization JSONObjectWithData:data options:0 error:&myError];

NSArray news = [NSArray arrayWithObject:res];

and with that I am able to use the following code to display the JSON contents in my tableview.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MainCell"];

    if(cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"MainCell"];
    }


    cell.textLabel.text = [[news objectAtIndex:indexPath.row] valueForKey:@"name"];

    cell.detailTextLabel.text = [[news objectAtIndex:indexPath.row] objectForKey:@"Location"];

    return cell;
}