[tableView reloadData]; doesn't work until I scroll the tableView

Question

I have a simple app that downloads search results in XML when the user types in a UISearchBar. The download+parsing is threaded and once done it fires an NSNo

Answer 1

My problem was that I was posting a NSNotification from a background thread. To avoid this, simply wrap your postNotificationMethod in a dispatch_async method like this:

dispatch_async(dispatch_get_main_queue(), ^{
    [[NSNotificationCenter defaultCenter] postNotificationName:@"FinishedDownloading" object:result];
});

When this notification will be received, the tableView.reloadData will be called on the main thread.