XCODE: presentViewController from UITableView does not show back button - ios

Question

I've been reading tutorials, questions and answers here (Stackoverflow) and there but I can't get it. It doesn't work, so I must have missed something.
The situation is: from a table view, once the user selects a row, a new view with information is displayed. Not a detail view, I'd like to embed a navigation controller but I don't know how.
The code I wrote:
...
[tableView deselectRowAtIndexPath:indexPath animated:YES];
UIViewController *viewController =nil;
switch (indexPath.section) {
case termaSection:
switch (indexPath.row) {
case 0:{
viewController = [[TermasChavasqueira alloc]init];
UINavigationController *navController = [[UINavigationController alloc]initWithRootViewController:viewController];
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:#"Back"
style:UIBarButtonItemStyleBordered
target:nil
action:nil];
navController.navigationItem.backBarButtonItem = backButton;
[self presentViewController:navController animated:YES completion:nil];
//[self presentViewController:viewController animated:YES completion:nil];
break;
}
default:
break;
}
default:
break;
}
What I obtain on TermasChavasqueira.xib is a NavigationBar, with no back button. The command [self presentViewController:viewController animated:YES completion:nil]; works fine adding the button on Interface Builder, but its a regular button, not the arrowed one.
The next piece of code does not work either:
[self.navigationController pushViewController:navController animated:YES];
Can you help me?
Thanks a lot.

Answer 1

You can't show the typical backbuton with this way. It comes by default when you display a viewcontroller using pusviewcontroller: method.
Instead of doing this, add a UIToolBar to the TermasChavasqueira.xib and add a barbutton for dismissing the view.
Write the action of UIBarbutton like:
- (void)dismiss:(id)sender
{
[self dismissViewControllerAnimated:YES completion:nil];
}
If you still need to use UINavigationController change:
navController.navigationItem.backBarButtonItem = backButton;
to
navController.navigationItem.leftBarButtonItem = backButton;