Android Working with Interceptors and Coroutines

Question

I need to implement the following mechanism and need guidance on the best approach to achieve it:

I have an Android application that uses retrofit with coroutines, and MVVM style.

I want to add an interceptor to achieve the following logic:

If I receive a specific error code -> ask user for some info -> re-send the request with user info appended -> resume the flow...

I could achieve the following by launching a dialog or a bottom sheet with a callback within the interceptor, but this will require adding callbacks everywhere...

I need something more generic:

Whenever I receive this specific error code on my application (on any request) -> ask the user for some info -> repeat the request with user info appended -> resume activity/fragment logic.

Answer 1

Interceptors don't have access to UI. You can create a custom CallAdapter, Call and Callback to handle specific responses and process them as you wish.

This article suggests one way of doing that.