SwiftUI For Dummies

Chapter 9

Using Legacy UIKit Views and View Controllers in SwiftUI

IN THIS CHAPTER

Understanding the UIKit View Controller life cycle

Understanding the SwiftUI view life cycle

Using UIKIt views in SwiftUI through the UIViewRepresentable protocol

Using UIKIt view controllers in SwiftUI through the UIViewControllerRepresentable protocol

SwiftUI comes with a number of views that make creating user interfaces (UIs) for your applications very easy. It is, nevertheless, still in its early days. A number of popular views and view controllers still have not been ported over to SwiftUI. For example, the Activity Indicator and WebView views in UIKit and the Image Picker and Contacts Picker view controllers are just some of the views and view controllers that have yet to port to SwiftUI.

Fortunately, SwiftUI works seamlessly with the existing UIKit frameworks on all Apple platforms — you can place UIKit views and view controllers within SwiftUI views and vice versa.

In this chapter, I show you how to use the existing UIKit views and view controllers in SwiftUI. I recap the way things are done ...