Loading data from JSON in viewDidLoad doesn't work

Question

I'm developing an iPhone application where the data comes from a webservice that returns a json file. I'm using the following command in the viewDidLoad of the UITableViewController where I want to bind the data:

    responseData = [[NSMutableData data] retain];


NSURLRequest *request = [NSURLRequest requestWithURL:
                         [NSURL URLWithString:@"webservice url"]];

[[NSURLConnection alloc] initWithRequest:request delegate:self];

and then I get the data from the json result into a NSDictionary in the connectionDidFinishedLodading Delegate.

The problem is that the numberOfRowsInSection delegate from UITableView executes before the connection finishes downloading data, which makes my table view with zero rows and doesn't show anything.

What am I doing wrong? Did I misunderstand the concept of the viewDidLoad and should be loading this data elsewhere?

Felix Lamouroux · Accepted Answer · 2010-11-08 14:28:14Z

2

Call reloadData on the tableView when you are done processing the data.

[self.tableView reloadData];

This triggers all UITableViewDatasource methods anew.

answered Nov 8, 2010 at 14:28

Felix Lamouroux

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