Add UINavigationController inside UIViewController

Question

I have a UIViewController with a UIToolbar (on bottom) and I want to add a UINavigationController with UINavigationBar inside. But the UINavigationController is not displayed.

Answer 1

Adding a view controller as a child view controller isn't enough. You also need to add the navigation controller's view as a subview of the container view controller's view.

[myNav willMoveToParentViewController:self];
myNav.view.frame = navFrame;  //Set a frame or constraints
[self.view addSubview:myNav.view];
[self addChildViewController:myNav];
[myNav didMoveToParentViewController:self];

See the View Controller Programming Guide for more details.