Using Navigation Controllers

Push/pop navigation is one of the common types of navigation in iPhone apps, and it is easy to set up. A navigation controller manages a stack of view controllers. It is always initialized with a view controller and view controllers can be pushed onto the stack or removed from the stack.

Follow the steps below to set up a navigation controller using both Storyboard and programatically.

Using Navigation Controllers in Storyboard

Step 1: Embed a View Controller in a Navigation Controller

Embed in Navigation|600
What changes? Notice there is another View Controller added, including another scene. There is also a gray arrow that indicates that the Nav controller is now the main entry point, or Initial View Controller. A link is also established between the Nav and the original View Controller.

Step 2: Create push segues to any view controller

Creating a push segue|600 First make sure you have two View Controllers. Control-Drag from the source View Controller to the Destination View Controller. Choosing show will implement a standard segue (Pronounced seg-way). Read more about Showing View Controller from the Apple Developer documentation.

Step 3: Popping a View Controller

By default, navigation controllers provide a navigation bar with a back button. If you want to go back to the previous view controller using code, then you can call the popViewController method, as shown below.

//In Swift
navigationController!.popViewController(animated: true)
//In Objective-C
[self.navigationController popViewControllerAnimated:YES];
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