iOS - another thread needs to send reloadData to the mainthread

Question

I got a separate thread that creates a UIView object, inserts it into the UITableView's data source and then call reloadData on the UITableView. However, since it is a separate thread, it cannot call reloadData directly, it needs to make the mainthread do it... but how do you tell the mainthread to do it?

Thanks

Answer 1

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

Answer 2

You can use dispatch async, this method allows you to marshal worker thread to blocks of in-line code rather than methods using performSelectorOnMainThread:

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