Stop using GeometryReader in SwiftUI

GeometryReader is commonly used to control the size of a View w.r.t its parent View/container. Let's explore a simple ViewModifier in iOS 17 that makes this so much easier and nicer to read.
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Chapters:
0:00 GeometryReader Example
2:10 containerRelativeFrame
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[@FloWritesCode]

How will you use this API?

[@CodingSwiftWithNico]

Sehr guter Tipp! Danke fürs zeigen 👍

[@swiftandtips]

Very useful information! Thanks for sharing Flo! 🙌🏻

[@FloWritesCode]

My pleasure!!

[@tylerwatt5651]

Awesome! I'm right in the process of GeoReader and considering a second option. I think this will work! Thank you!

[@FloWritesCode]

Glad it was helpful!

[@Jon88938]

I don’t think this modifier works relative to the parent view like geometry reader does. Instead it works relative to a container which is a window, scroll view or navigation stack

[@rahuljamba5846]

Good tips !!

[@FloWritesCode]

Thanks!

[@ScottSmithDev]

Awesome Flo - thank you for the clear demo! I didn't know about his modifier! I'd image I'll use it for all sorts of things, including a custom bottom sheet (when your app doesn't support the SwiftUI iOS version to use detents) combined with ScaledMetric or something. Anyway, thanks again!

[@FloWritesCode]

Hey Scott! This sounds great, but unfortunately this API was only introduced in iOS 17... So it's not really suitable for you use case :/

[@andrejkling3886]

Thank you...

[@natgenesis5038]

GeometryReader is good for all iOS devices if you wanna keep the same size based screen size

[@ags2099]

Ein tutorial zum thema animationen wäre richtig cool 🎉

[@FloWritesCode]

Welche Art von Animationen würdest du gerne lernen? .animation, .symbolEffect oder PhaseAnimator?

[@ags2099]

⁠@@FloWritesCodeist .animation nicht veraltet? Ansonsten sowohl symboleffect als auch phase wäre ganz cool. Vielleicht als Video Idee für dich "Introduction into Animations"

[@ilyabiltuev]

🔥🔥🔥

[@0xifarouk]

Maybe this uses GeometryReader behind the scene?

[@FloWritesCode]

We'll probably never know :/

[@meowpeow765]

Swift is open sourced though :)

[@FloWritesCode]

@@meowpeow765 Yup, but this is about SwiftUI, which isn't :/

[@kamilsuleymanov7197]

Stop using iOS 17 only)

[@FloWritesCode]

Tell Apple to stop shipping SwiftUI updates that aren't backwards-compatible...

[@aznixqorodok]

@@FloWritesCode New title: "Stop using GeometryReader in SwiftUI (iOS 17+)"