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SwiftLee Weekly by Antoine van der Lee

SwiftLee Weekly - Issue 342

Published about 2 months ago • 5 min read

This week's SwiftLee Weekly covers:

  • The new JSON project format in Xcode 27.2
  • Adopting your app to iPhone Duo
  • Running Cloud Agents with Xcode on Apple Silicon

Enjoy this week's SwiftLee Weekly!

THIS WEEK'S BLOG POST

​iPhone Duo Simulator: Testing and optimizing your SwiftUI app​

A brand new device means a brand new Simulator. This time, it's not a simple iteration on the iPhone sim, but a truly new type of simulator that can fold! How it works and how you can use it to adapt your app is covered in this week's article.
​avanderlee.com​

SPONSORED

​Run cloud agents with Xcode on real Apple Silicon​

Xcloud gives your cloud agents their own macOS environment, complete with your Xcode version, SDKs, and dependencies. They can edit, build, and test iOS or macOS apps while Xcloud handles the infrastructure. Learn more.

GIVEAWAY WINNERS

Swiftsonic Giveaway Winners

Over the past weeks, you've been able to join the monthly giveaway. I'm happy to announce Kumail, and A. Trejo as the winners. You'll receive a separate email with your ticket for Swiftsonic '26. For all others: stay tuned for a new giveaway soon!

CURATED FROM THE COMMUNITY

​Early Design Explorations for iPhone Duo Layouts​

Looking for design inspiration for your iPhone Duo adjustments? Jordan Morgan takes us through his creative process for his Elite Hoops app.
​swiftjectivec.com​

​Configuring SwiftUI toolbars on iPhone Duo​

Toolbars behave differently on iPhone Duo and you can influence them in SwiftUI using Natalia Panferova's guidance as shared in this article.
​nilcoalescing.com​

​What's New in Vapor 5 Beta​

Vapor 5 is here in beta and worth considering if you have a backend running Vapor. From experimental Macros to removing over 50 locks from the codebase.
​blog.vapor.codes​

​The new JSON project format in Xcode 27.2​

You might have overlooked this with all the iPhone Duo announcements: a new project format arrived in Xcode 27.2 and Sarunw tells you all about it. I can't wait to migrate over!
​sarunw.com​

​What I Use for iPhone App Development in 2026​

Which apps do you use for iPhone app development? Matt Braun shares his collection in this overview.
​mattbraun.co​

SWIFT EVOLUTION

An overview of last week's Swift Proposal state changes. Check them out when they're in review, as it's your opportunity to influence the direction of Swift's future.

WHAT I'M WORKING ON

What the new iPhone Duo Simulator means for me

I bet many of you are actively working on adding iPhone Duo support to your apps. I do too, but a much bigger challenge came up.

​RocketSim's capturing feature suddenly has to deal with a 3D device. It can fold, rotate, and appears more often in landscape: a single-dimension video recorder is no longer sufficient.

As soon as I got my hands on the new Simulator, I started playing around with adding support. I managed to read the hinge angle in real time, capture it consistently during a recording, and reapply it to create beautiful captures afterward.

Another challenge is adding support for touches, grids, and rulers. The screen rect is quite dynamic and no longer easy to reproduce. RocketSim overlays on top of Device Hub, so I have to find a way to recalculate the real dimensions.

Let's say "challenge accepted", I'm already getting close to a first working version. Meanwhile, I've been able to submit RocketTrace to the App Store, so it's been busy days!

UNTIL NEXT TIME

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Your rewards continue from there: reach three referrals to unlock 50% off RocketSim Pro Yearly.

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Thank you so much for your support, and until next Tuesday,

Antoine

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SwiftLee Weekly by Antoine van der Lee

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Swift Evolution updates, 5 top community articles covering Swift development topics.

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