StateFlow fetching the same data again on Back Navigation

Question

I am working with RecyclerView and using Retrofit to fetch the data from Server. I am using Kotlin with MVVM Design Pattern. I have used LiveData it was working fine. But with Stateflow causing issues when we navigate to another Fragment and Comes back to the Same Fragment again. It just fetches the same data again. Below is the code for ViewModel and the observer:

//View Model

private val _allTimeSheetsResponse =
        MutableStateFlow<ResponsesResult<AllTimeSheetsResponse>>(ResponsesResult.Empty)
    val allTimeSheetsResponse : StateFlow<ResponsesResult<AllTimeSheetsResponse>> get() = _allTimeSheetsResponse

    fun getAllTimeSheets(auth: String) =
        viewModelScope.launch {
            timeSheetsRepository.getAllTimeSheets(auth).collect {
                _allTimeSheetsResponse.value = it
            }
        }

//Observer

lifecycleScope.launchWhenStarted{
            timeSheetsViewModel.allTimeSheetsResponse.collect { timeSheetsResponse ->
                when (timeSheetsResponse) {
                    is ResponsesResult.Loading -> binding.progressBarLayout.show()
                    is ResponsesResult.Failure -> {
                        binding.progressBarLayout.gone()
                        binding.nothingFoundLayout.show()
                        handleApiError(timeSheetsResponse)
                    }
                    is ResponsesResult.Success -> {
                        binding.progressBarLayout.gone()
                        if (timeSheetsResponse.value.payload.isNotEmpty()) {
                            showAllTimeSheetsRecyclerAdapter.submitList(timeSheetsResponse.value.payload)
                        } else {
                            binding.nothingFoundLayout.show()
                        }
                    }
                    else -> Unit
                }
            }
        }

Answer 1

Because you call getAllTimeSheets many times (eg. onCreateView or onViewCreated). Trying call it when accessing allTimeSheetsResponse` for the first time.