How to postion tableView to the last inserted section SMOOTH - ios

Question

EDIT:
I found this SO thread.
UITableView inserting section at top while scrolling
I have a tableView
I load it with 5 sections initially
Then I scroll up and when section 0 and row 0 is displayed, I load the next 5 sections and insert in table view using
[self beginUpdates];
[self deleteSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationNone];
[self insertSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationNone];
[self insertSections:[NSIndexSet indexSetWithIndex:1] withRowAnimation:UITableViewRowAnimationNone];
[self insertSections:[NSIndexSet indexSetWithIndex:2] withRowAnimation:UITableViewRowAnimationNone];
[self endUpdates];
However my problem is the tableView gets position at section 0 and row 0 after the inserts
but I want to position at last row of last new section inserted (which is section 2 in code above)
I tried this both inside and outside begin/end updates
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:2];
[self scrollToRowAtIndexPath:indexPath
atScrollPosition:UITableViewScrollPositionBottom animated:YES];
But it does it abruptly.

Answer 1

After inserting sections you can also scroll the table view to the intended index path using
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:2];
[UIView animateWithDuration: 1.0
animations: ^{
[tableView scrollToRowAtIndexPath:indexPath
atScrollPosition:UITableViewScrollPositionBottom animated:NO];
}
completion: ^(BOOL finished){
}
];
Note:
1) Insert the above code after [self endUpdates];
2) Please ensure that you keep the animated flag to NO using scrollToRowAtIndexPath: atScrollPosition: animated: while you are using it with UIView's animateWithDuration: animations: completion: API.
3) Also you can calculate the duration based on the distance (content size, height wise for vertical scroll), i.e duration can depend on the distance between source index path and destination index path.

Answer 2

Please try below code.
[self beginUpdates];
/*
Insert your sections
*/
[self endUpdates];
[self performSelector:#selector(scroll) withObject:nil afterDelay:0.1];
-(void)scroll
{
if([Your array count] > 0)
{
[YOURTABLENAME scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:2] atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}
}
I Hope above code is work for you.
Thanks