[Solved] My team is using UIKit with Kotlin/Native...

# ios

[Landry Norris]

[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

[Landry Norris]

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

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

in Crashlytics.

[Landry Norris]

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

[hfhbd]

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

[hfhbd]

It's 14.0+

[Landry Norris]

That explains it.

[Landry Norris]

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

[hfhbd]

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

[Landry Norris]

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]

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

[Landry Norris]

I’ll look into that one.

[Landry Norris]

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

[Landry Norris]

Same issue.

[Landry Norris]

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

[Landry Norris]

Guess I’ll have to use selectors…