Is there a way to check for Obj-C API availability...

# ios

[Jacob Rhoda]

Is there a way to check for Obj-C API availability in Kotlin code? I ran into an issue where I accidentally used an API that was only available on iOS 15 and it crashes on iOS 14.

[Pavel Lahoda]

Yep, that is pretty straightforward. Create something like:

if *#available*(iOS 15.0, *) {
kotlinNativeFunction("Have iOS 15")
}

and call it somewhere inside your iOS code. This will get back to your shared module and you can use it any way you like.

[Nikolay Kasyanov]

you can do the check in Kotlin as well, via NSProcessInfo APIs: https://developer.apple.com/documentation/foundation/nsprocessinfo/1414876-isoperatingsystematleastversion

[Nikolay Kasyanov]

for example: https://github.com/ktorio/ktor/blob/c1fd64c0289fa587207e95ebd220ea4d39c14d72/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/certificates/CertificatePinner.kt#L263-L268

[Jacob Rhoda]

Thanks! That seems like the best option right now.