Kotlin Coroutines and Retrofit: Handling API Response with Nullable Types Properly
I'm trying to figure out I've been researching this but I'm sure I'm missing something obvious here, but I tried several approaches but none seem to work....... After trying multiple solutions online, I still can't figure this out... I'm relatively new to this, so bear with me. I'm currently integrating Retrofit with Kotlin Coroutines in my Android app, and I'm working with an scenario when handling responses from a nullable API endpoint. My Retrofit service is set up as follows: ```kotlin interface ApiService { @GET("user/{id}") suspend fun getUser(@Path("id") userId: String): Response<User?> } ``` When I receive a response, I want to handle both successful responses and the case where the user might not exist (null). However, I'm unsure how to safely work with this nullable type and ensure that my UI reflects this state correctly. Here's how I'm currently trying to handle the response: ```kotlin val userResponse = apiService.getUser(userId) if (userResponse.isSuccessful) { val user = userResponse.body() if (user != null) { // Update UI with user data } else { // Handle the case where user is null Log.d("API_CALL", "User not found") } } else { Log.e("API_CALL", "behavior: ${userResponse.errorBody()?.string()}") } ``` The code above works fine, but I want to make sure Iām adhering to best practices. Should I be using `Result` or some other approach to handle this more effectively? I also noticed that when the user is null, the `Log.d` statement executes, but I want to test this in a more comprehensive way. Am I missing anything crucial here, particularly regarding behavior handling or coroutine context? Any advice on how to improve this while keeping the code clean and maintainable would be appreciated! My development environment is macOS. This is part of a larger API I'm building. Am I missing something obvious? Thanks for your help in advance! I'm working on a microservice that needs to handle this. I'd really appreciate any guidance on this.