Tag Archives: Segue

How to share data between Navigation Controllers

The Root Navigation Controller can serve as a data model. Each View Controller connected to the Navigation Controller via push segue can access its properties like so:

Here’s an example. MyNavController is the class for the Navigation Controller. This snipped is called from any View Controller in sequence and assumes we have an integer myNumber which is increased by one:

The same principle works for Tab Bar Controllers too.

How to trigger a Modal Segue

Once you’ve connected two View Controllers via a Segue in the storyboard you need to give it an identifier so we can call it in code like so:

Dismiss it via an action like this: