Issues with Navigation Component on Fragment Lifecycle During Back Stack Transition
I'm working on a personal project and I just started working with I need help solving I'm stuck on something that should probably be simple. I've looked through the documentation and I'm still confused about I'm experiencing an issue with the Navigation Component in my Android app. When navigating between fragments, the back stack behavior seems inconsistent, causing the state to be lost unexpectedly. For instance, when I navigate from `FragmentA` to `FragmentB`, and then back to `FragmentA`, the state of `FragmentA` is not restored correctly, resulting in blank UI elements. I've ensured that I'm using the latest version of the Navigation Component (2.4.0) and that my fragments are set up properly in the navigation graph. Here’s a simplified version of how I’m implementing the navigation: ```kotlin class FragmentA : Fragment() { private var someData: String? = null override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { // Inflate the layout for this fragment return inflater.inflate(R.layout.fragment_a, container, false) } override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) someData = savedInstanceState?.getString("data_key") ?: "Initial Value" // Update UI with someData } override fun onSaveInstanceState(outState: Bundle) { super.onSaveInstanceState(outState) outState.putString("data_key", someData) } } class FragmentB : Fragment() { override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { return inflater.inflate(R.layout.fragment_b, container, false) } fun navigateBack() { findNavController().navigateUp() } } ``` I’ve tried using `setRetainInstance(true)` in `FragmentA`, but that didn’t resolve the issue. The navigation occurs as expected, but the data is lost when returning. I also checked the logs for any lifecycle-related warnings, and there are none. I suspect it might be related to how the navigation graph handles fragment transitions, especially when the fragment is not in the foreground but still in the back stack. Any insights on how to properly manage fragment state during navigation transitions would be greatly appreciated! Any advice would be much appreciated. The project is a service built with Kotlin. I recently upgraded to Kotlin latest. Is this even possible? The project is a microservice built with Kotlin. What would be the recommended way to handle this?