hi everyone. I have network call done in kmp and t...

# multiplatform

[Stefano Andrean Salim]

hi everyone. I have network call done in kmp and the response will be consumed on ios native app through OBJ-C header.
One of the response model that I created is structured like this.

@Serializable
data class ScoreInfo(
  @SerialName("tier_mapping")
  val tier: Tier? = null,
  @SerialName("score")
  val score: Int? = null,
  @SerialName("info")
  val info: Map<String, InterestInfo?>? = null,
)

@Serializable
data class InterestInfo(
  @SerialName("interest_rate")
  val InterestRate: InterestRate? = null,
)

@Serializable
data class InterestRate(
    ...
)

the ScoreInfo and Tier data class is defined in OBJC header but the InterestInfo data class is not.

context: my app is a native iOS app created in swift. Then I have a project to add a VC created in CMP as a childViewController of a page in native swift. I created a function in shared.kt which return ScoreInfo data class because I want to save it into the ios app localdb. I face a hard time to save it into ios localDb because the property info is declared as interestInfo:(NSDictionary<NSString *, *id*> *)interestInfo in OBJC header. id in OBJC could be any object.
I wish I can typecast it into InterestInfo but it is not declared on OBJC header somehow.

need a clue here. 🙂

[Michael Krussel]

Nullable types don't play nice with the Objective-C interop.

So if you could change Map<String, InterestInfo?> to Map<String, InterestInfo> I think that would help.

Maybe a computed property that removes the nulls.

[Stefano Andrean Salim]

Thanks for your idea.
Yeah, I notice that too.
I can’t remove the optional type because it is an existing API contract. Changing it means the BE need to adjust and do the versioning.