UItableview scrollToRowAtIndexPath not displaying last row correctly

Question

I have a tableview with custom cells with dynamic cell heights depending on the cell content.

My problem is the following, when I ask, programmatically, in the viewD

Answer 1

[self.tableView reloadData];
dispatch_async(dispatch_get_main_queue(), ^{
        NSIndexPath *rowIndexPath = [NSIndexPath indexPathForRow:3 inSection:0];
        [self.tableView scrollToRowAtIndexPath:rowIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
});

I don't know exactly why, but I guess this approach works because when we add(???) rows and call [tableView reloadData] tableView has no time to update some internal counters (like row counter) and calling [tableView scrollToRowAtIndexPath ...] has no effect since there is no such row at that time (again, probably correct in case you add rows or set tableView's data for the first time). Calling

dispatch_async(dispatch_get_main_queue(), ^{
    ...
}); 

after [tableView reloadData] gives tableView enough time to update row counter and perform scroll to existing row.

Vishy's approach works just because it gives enough time but applicable only if you need to scroll exactly one time when screen is loaded. Moreover it requires ugly flag to check every time viewDid/WillAppear.