In UISplitViewController, can't make showDetailViewController:sender: push onto detail navigationController

Question

In iOS 8, view controllers can now call showDetailViewController:sender: to have the system determine the proper view controller to present the detail view controll

Answer 1

if (self.splitViewController.collapsed)
    [self.splitViewController showDetailViewController:self.itemVC sender:self];
else
    self.splitViewController.preferredDisplayMode = UISplitViewControllerDisplayModePrimaryHidden;