Trying to implement a `UITableViewDataSource` Protocol in pure Kotlin... The bridging seems to think...

# ios

[darkmoon_uk]

Trying to implement a UITableViewDataSource Protocol in pure Kotlin... The bridging seems to think I'm overriding a totally different method signature in the protocol, and so is throwing a compile error (on the return type). Is this expected? A bug? Workarounds exist with annotations?

[svyatoslav.scherbina]

The bridging seems to think I’m overriding a totally different method signature in the protocol, and so is throwing a compile error (on the return type)

Could you clarify?

Btw, to override Objective-C method, you have to use the same parameter names.

[darkmoon_uk]

I used IntelliJ's own code generation to override. I'll provide exact failing code:

[darkmoon_uk]

class Source : NSObject(), UITableViewDataSourceProtocol {

    override fun tableView(tableView: UITableView, cellForRowAtIndexPath: NSIndexPath): UITableViewCell {...}

    override fun tableView(tableView: UITableView, numberOfRowsInSection: NSInteger): NSInteger {...}
}

[darkmoon_uk]

message has been deleted

[darkmoon_uk]

I tried applying explicit @ObjCMethod to reaffirm ObjC signature, but no change.

[svyatoslav.scherbina]

This issue is likely to be related to Kotlin/Native support in IntelliJ IDEA.

The compiler should handle this code properly. Could you check this?

[darkmoon_uk]

Yes, it does compile correctly despite the IDE errors - apologies for not checking that earlier.

[svyatoslav.scherbina]

It’s ok 🙂
Could you please report the IDE issue to https://github.com/JetBrains/kotlin-native/issues ?

[darkmoon_uk]

Filed: https://github.com/JetBrains/kotlin-native/issues/2476