Question

in my app, the users can create groups. When a user creates a group, a new folder is uploaded on dropbox, and inside there is a JSON file like this:

{"group":"0864798478"}

The code you see is generated randomly in the following way:

NSString *randomKey = [NSString stringWithFormat:@"%0.10u", arc4random()];

Then I have a table view which displays all the folders (groups). But I would like the UITableView to display only the groups which mach with the codes the iPad has saved on.

So if I have:

{"group a":"0864797073"}
{"group b":"0764898478"}
{"group c":"2864758479"}

And on the iPad there is a file containing the code:

0864797073 (group a)

The table View displays only that group, not all.

How can I do this??

Thanks in advance for the help!!

Answer 1

You can use JSONKit or SBJson for parse JSON files and obtain NSDictionaries with the data. Then you can create a NSDictionary in wich you could save the result of comparing previous dictionaries, an then show the result in the table with method tableView:cellForRowAtIndexPath. OR, make the comparison in the method tableView:cellForRowAtIndexPath. Good Luck!

EDIT:

If the file reads:

{"group a":"0864797073"} 

You parse it and get a dictionary like in wich “group a” will be the KEY and the NSString “0864797073” will be the value. So to compare the dictionary wich holds group a with wich holds group b you have to do:

if([[firstParsedJson objectForKey:@"group a"] isEqualToString:[secondParsedJson objectForKey:@"group b"]])
{
   //Do some stuff...
}

Where firstParsedJson and secondParsedJason are NSDictionaries that represent parsed json with, for example, SBJson.