Hi, I am trying to implement an interface in swift...

# multiplatform

[TARUN SAINI]

Hi,
I am trying to implement an interface in swift which is defined in KMM library

Kotlin interface:

interface ExampleInterface{
  fun abs(value : Int)
}

Swift usage:

class Example: ExampleInterface{
 func abs(value : KotlinInt?){

  }
}

It is giving error: 'KotlinInt' is ambiguous for type lookup in this context
kotlin version: 1.7.20
swfit: swift 4
xcode: 15.3
How can I fix this.
Thanks

[Pablichjenkov]

Doesn't Xcode suggest what type to pass?
It suggests Int32 to me. You can try swift Int too.

[TARUN SAINI]

@Pablichjenkov
Xcode is suggesting KotlinInt.

If I am changing it to Int32 then
Type 'Example' does not conform to protocol 'ExampleInterface'

[Michael Krussel]

The type shouldn't be nullable.

[Pablichjenkov]

Ahh, I missed the nullability. Can you try not nullable in the swift override func?
But still KotlinInt should work, especially if Xcode suggested it. Do a cleanup in Xcode and re compile on Android Studio, maybe that helps with some bad cache 🤷‍♂️

[TARUN SAINI]

@Michael Krussel @Pablichjenkov
Thanks, It is working with non-null type, I need to make param non null in kotlin as well.