Table View scroll when text field begin editing iphone

Question

Hi,

I have table view controller in iphone application. Table view has two sections. First section has two rows and second section has one row. Second section has a custom table view cell.

Second section has a textfield which hides when text field begin editing and keyboard pops up. I want this table view to scroll when keyboard pops up.

I tried the following code which I came across on different websites but in vain.

Thanks in advance.

-(void) textFieldDidBeginEditing:(UITextField *)textField {

    CGRect textFieldRect = [textField frame];
    [self.tableView scrollRectToVisible:textFieldRect animated:YES];
} 
                          atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
}

-(void) textFieldDidBeginEditing:(UITextField *)textField {

    UITableViewCell *cell = (UITableViewCell*) [[textField superview] superview];
    [self.tableView scrollToRowAtIndexPath:[tableView indexPathForCell:cell] 
                          atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
}