Solved My team is using UIKit with Kotlin Native on a proje kotlinlang #ios

[Solved] My team is using UIKit with Kotlin/Native on a project, and we’re seeing an interesting error pop up in Crashlytics, but specifically for iOS/iPadOS 13

We use actionWithHandler to define button handlers, and we’re seeing

+[UIAction actionWithHandler:]: unrecognized selector sent to class 0x1d7445ab8

in Crashlytics.

This only affects iOS 13 users. Is there a known issue regarding this?

hfhbd

08/18/2022, 7:18 AM

You mean this method? https://developer.apple.com/documentation/uikit/uiaction/3656167-actionwithhandler

It's 14.0+

Landry Norris

08/18/2022, 2:17 PM

That explains it.

What should I use pre-14 when I do this in Koltin?

hfhbd

08/18/2022, 2:27 PM

Good question 😄 But I guess there have to be some older implementation

Landry Norris

08/18/2022, 2:29 PM

The only method I’m aware of currently is to annotate with IBAction and let storyboards handle it, but that doesn’t seem to work unless I use Swift/Objective-C. I’d imagine there’s something I can do, though.

hfhbd

08/18/2022, 2:29 PM

What about this one? https://developer.apple.com/documentation/uikit/uiaction/3340167-actionwithtitle?language=objc The swift implementation has nullable parameters

Landry Norris

08/18/2022, 2:29 PM

I’ll look into that one.

@hfhbd it looks like actionWithTitle didn’t solve it.

Same issue.

Looks like UIButtons didn’t work with actions in 13 https://www.samurai-digital.com/how-ios14s-uiaction-reduces-repetitive-code/

Guess I’ll have to use selectors…

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