Adding SwiftUI to an existing app

In this recipe, we will learn how to navigate from a UIKit view to a SwiftUI view while passing a text as argument from our UIKit storyboard to our SwiftUI view.

A storyboard is a visual representation of the user interface in UIKit. The Main.storyboard file is to UIKit as the ContentView.swift file is to SwiftUI. They both are the default home views created when you start a new project.

The recipe begins with a UIKit project that contains a button.

Getting ready

To prepare for this recipe, perform the following steps:

1. Clone or download the GitHub project at https://github.com/PacktPublishing/SwiftUI-Cookbook.
2. Open the StartingPoint folder located at SwiftUI-Cookbook/Chapter01 - Using the basic SwiftUI Views and Controls/10 - Adding SwiftUI to UIKit and double-click on the AddSwiftUIToUIKitApp.xcodeproj file. It opens up the UIKit project in Xcode.

How to do it…

We will add a NavigationController to the UIKit...