[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 NSNotification to tell the ViewController with the table view to [tableView reloadData];

Here is the code that receives the notification fired once results are in:

- (void)receivedResults:(id)notification {     results = [notification object];     DLog(@"Received %i results",[results count]);     [[self tableView] reloadData]; } 

I get the log output "Received 4 results", but the table view doesn't reload the data until I scroll/drag it a couple pixels. I am using the built-in UITableViewCellStyleSubtitle cell style and im not changing the height or ding anything fancy with the table view.

What am I doing wrong?

Answer 1

I was able to get the same thing to work. But the issue was that the reload data needed to be called on main thread.

dispatch_async(dispatch_get_main_queue(), ^{     [self.tableView reloadData]; }); 

I think this is more practical than the performSelectorOnMainThread option

Answer 2

Call

[self.tableView performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:NO]; 

instead of

[self.tableview reloadData]