---
title: WWDC22 Day 4 recap
framework: wwdc
role: article
path: wwdc/wwdc2022-110932
---

# WWDC22 Day 4 recap

It's time to review Day 4. Check out the Thursday highlights and tune in for a quick preview of the last day of WWDC22.

## Transcript

♪ Bass-heavy electronic music ♪ It's time to review day four.

Roll the tape! We checked in with Raj on how you can organize your iPad interface with SwiftUI.

- Better support for state restoration, deep linking, and even richer programmatic control.

- Then Sara showed us how to bring the power of SwiftUI to your UIKit apps.

- You can use the hosting controller anywhere you can use a view controller in UIKit.

- Later on, Brett took us through the latest updates for Vision.

- Here we compute optical flow for a short clip of this dog fetching a water bottle on a beach.

- And we discovered how to create compelling SharePlay experiences.

- Think of SharePlay like a portal, transporting people through their phones and into the same space.

- We also got a lesson in language from Apple's interface writers.

- Writing for interfaces begins with curiosity for who's on the other side of the screen.

- And now for the intel on day five.

♪ Check back in tomorrow for our final report.