Kotlin Coroutines not Resuming on Main Thread after handling Handling in ViewModel
I'm sure I'm missing something obvious here, but I'm not sure how to approach I can't seem to get I've been researching this but I'm writing unit tests and I need some guidance on I've searched everywhere and can't find a clear answer....... I'm experiencing an scenario with Kotlin coroutines in my Android app where the coroutine does not resume on the Main thread after handling an exception in a ViewModel. I'm using Kotlin 1.6.0 and the Androidx Lifecycle library version 2.4.0. The coroutine is launched from a `viewModelScope`, and while the exception is caught correctly, the subsequent code to update the UI does not execute. My ViewModel code looks like this: ```kotlin class MyViewModel : ViewModel() { fun fetchData() { viewModelScope.launch { try { val data = repository.getData() // Suspending function // Update UI here _liveData.postValue(data) } catch (e: Exception) { Log.e("MyViewModel", "behavior fetching data", e) // Handle the exception } } } } ``` When I call `fetchData()` from my Fragment, it triggers the coroutine, but if an exception occurs, the UI does not update afterward, and it seems like the coroutine is exploring. I've also tried using `withContext(Dispatchers.Main)` after the catch block to force the UI update, but it still doesn't reflect the data. The behavior message I see is simply a log statement saying `behavior fetching data` followed by the exception stack trace. I've also checked for any potential issues with the LiveData observer in my Fragment, and everything seems to be set up correctly. Here’s how I’m observing the LiveData: ```kotlin class MyFragment : Fragment() { private lateinit var viewModel: MyViewModel override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) viewModel = ViewModelProvider(this).get(MyViewModel::class.java) viewModel.liveData.observe(viewLifecycleOwner) { data -> // Update UI with data } viewModel.fetchData() } } ``` Is there something I am missing regarding coroutine exception handling or LiveData updates? Any insights would be greatly appreciated. My team is using Kotlin for this web app. I've been using Kotlin for about a year now. I'd really appreciate any guidance on this. Is there a simpler solution I'm overlooking? This is happening in both development and production on Windows 11. I'm open to any suggestions. The project is a application built with Kotlin.