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iOS

Posted by Vittorio Somaschini
Vittorio Somaschini
33,371 Points

Can't get tablecellview to actually display the content I want

Hello.

As you may understand from my question I am super new to ios developing (actually to any kind of coding), but I was doing pretty good in the ios development track that I have opted for a quick jump into my app idea development.

Here is my problem: Thanks to Amit Bijlani I have been to devel a test database on a website that I have, and I have been able to log the content of the database on my console.

Now I am stuck as I can't get my app show the content of this page in ma tab view and it is killing me.

So, because I have been able to log the json data to the console, I guess the problem must be in the code I have put into the table view data source, and here is my code there:

"#pragma mark - Table view data source

  • (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    // Return the number of sections. return 1; }

  • (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in the section. return self.gamesDictionary.count; }

  • (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    // Configure the cell... NSString *object = self.gamesDictionary[indexPath.row]; cell.textLabel.text = object;

    return cell; }"

I still get the console to show the right thing, but the app is still blank (I only see the white tabs).

Any ideas about where I am going wrong?

Just for complete info I am pasting my viewDidLoad code too:

"[super viewDidLoad];

NSURL *gamesMainURL = [NSURL URLWithString:@"http://www.vittoriosomaschini.com/betgame/service.php"];

NSData *gamesList = [NSData dataWithContentsOfURL:gamesMainURL];


NSError *error = nil;

NSMutableDictionary *datas = [NSJSONSerialization JSONObjectWithData:gamesList options:0 error:&error];

NSMutableDictionary *gamesDictionary = [datas valueForKey:@"Name"];

NSLog(@"%@", gamesDictionary);"

Thank you very much

Vittorio

4 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

you need to store an array thats contained in the dictionary. right now you are using the dictionary itself as your datasource, and thats not going to work. Im not sure how your JSON dictionary looks, so a lot of this code is based on assumptions. 

NSMutableDictionary *datas = [NSJSONSerialization JSONObjectWithData:gamesList options:0 error:&error];

NSMutableDictionary *gamesDictionary = [datas valueForKey:@"Name"];

NSLog(@"%@", gamesDictionary);

//store the array of game titles contained in the dictionary
self.gamesArray = [gamesDictionary objectForKey:@"games"];

then in your delegate methods use the gamesArray property

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{

    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return self.gamesArray.count;
}


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

    // Configure the cell...
    NSString *object = self.gamesArray[indexPath.row];
    cell.textLabel.text = object;

    return cell;
}
 Vladimir Cezar
 Vladimir Cezar
7,710 Points
 Vladimir Cezar
 Vladimir Cezar
7,710 Points

Can you upload your code to github?

Vittorio Somaschini
Vittorio Somaschini
33,371 Points
Vittorio Somaschini
Vittorio Somaschini
33,371 Points

Ok ty both.

Thanks in particular to Sean: my code line "NSMutableDictionary *gamesDictionary = [datas valueForKey:@"Name"];" was actually a try at creating what you suggested, but it needed to be an array.

The only weird this is that it did not work with objectForKey as you suggested, but it worked using valueForKey instead.

I don't understand why for now but then my code looks like this:

"[super viewDidLoad];

NSURL *gamesMainURL = [NSURL URLWithString:@"http://www.vittoriosomaschini.com/betgame/service.php"];

NSData *gamesList = [NSData dataWithContentsOfURL:gamesMainURL];


NSError *error = nil;

NSMutableDictionary *datas = [NSJSONSerialization JSONObjectWithData:gamesList options:0 error:&error];


self.gamesArray = [datas valueForKey:@"Name"];"

For the method I have simply followed the changes you had made and implementing the new property.

ty

PS

@vladimir Cezar I will sign up with Github now! I am supernew to coding! ;)

Stone Preston
Stone Preston
42,016 Points

hmm strange. I would have thought objectForKey would have worked fine. maybe you had the key string wrong

agreatdaytocode
agreatdaytocode
24,757 Points
agreatdaytocode
agreatdaytocode
24,757 Points

Has this question been solved?