Scroll tableview row up when keyboard appears iOS - ios

Question

My apps some ui components hides from bottom when keyboard appears, in fact its a tableView's last row.
I am using NSNotificationCenter to notify when keyboard appears and disappears.
Here is my code:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardOnScreen:) name:UIKeyboardDidShowNotification object:nil];
-(void)keyboardOnScreen:(NSNotification*)notification{
NSDictionary* info = [notification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
CGRect screen = self.view.frame;
screen.size.height -= kbSize.height;
float HeightOfToolbar =_inputbar.frame.size.height; //TOOLBAR
float yPoint = screen.size.height-HeightOfToolbar;
CGPoint scrollPt = CGPointMake(0, yPoint);
[_dataTable setContentOffset:scrollPt animated:YES];
}
However, tableview scroll up but not at correct row i.e last row above keyboard.
Sometimes it scroll to second last row hiding last row, or more above.
its related to scrollPt value!

Answer 1

Use this method keyboard appears
- (void)keyboardWasShown:(NSNotification *)aNotification {
NSDictionary* info = [aNotification userInfo];
CGSize Size = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, Size.height - HeightOfToolbar, 0.0);//Set height according to key board height
self.tableView.contentInset = contentInsets;
self.tableView.scrollIndicatorInsets = contentInsets;
[self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}
Hide key board
- (void)keyboardWasHidden:(NSNotification *)aNotification
{
self.tableView.contentInset = UIEdgeInsetsZero;
self.tableView.scrollIndicatorInsets = UIEdgeInsetsZero;
}