Autoscroll of TableView when not using TableViewController http://kingscocoa.com/tutorials/keyboard-content-offset/

TableViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];
}

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (void)keyboardWillShow:(NSNotification *)notification
{    
    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    UIEdgeInsets contentInsets;
    if (UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation])) {
        contentInsets = UIEdgeInsetsMake(self.tableView.contentInset.top, 0.0, (keyboardSize.height), 0.0);
    } else {
        contentInsets = UIEdgeInsetsMake(self.tableView.contentInset.top, 0.0, (keyboardSize.width), 0.0);
    }

    self.tableView.contentInset = contentInsets;
    self.tableView.scrollIndicatorInsets = contentInsets;
}

- (void)keyboardWillHide:(NSNotification *)notification
{
    UIEdgeInsets edge = UIEdgeInsetsMake(0, 0, 0, 0);
    self.tableView.contentInset = edge;
}

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    textField.inputView.stringTag = textField.stringTag;

    UITableViewCell *pickerCell = (UITableViewCell*)textField.superview;
    NSIndexPath *indexPath = [self.tableView indexPathForCell:pickerCell];
    
    [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}