I have a generic class NetworkResponse<T>, to wrap any network response: ```/** * A class wra...

# android-architecture

[Ofir Bar]

I have a generic class NetworkResponse<T>, to wrap any network response:

/**
 * A class wrapping every network response
 */
data class NetworkResponse<T>(@SerializedName("code") val code: Int,
                              @SerializedName("message") val message: String,
                              @SerializedName("data") val data: T)

However, I know, for sure, that whenever making a network request to our backend, some network responses will send back a NetworkResponse with data equals null . So then T cannot be inferred.

For example, when we Patch a User data, I receive code 200 OK, but data object returned is null (no data returned back is expected).
Here is the network request using retrofit:

@PATCH("user")
suspend fun updateUserBasicDetails(@Body basicDetailsBasicDetailsRequest: UserBasicDetailsRequest) : NetworkResponse<WHAT_TO_DO_HERE?>

I am not sure what type to set for NetworkRequest in this case. I need to give some object to the NetworkResponse, but don’t want to just put something ugly and unrelated like “String?“.

What can be done?

[aipok]

Response<Unit> works just fine as far as I know.

[pt]

I think you want Nothing? . I’m a little confused by the question though, what do you mean by “T cannot be inferred”?