Try approach 1 with regular flow

Author: LukasLechnerDev

app/src/main/java/com/lukaslechner/coroutineusecasesonandroid/usecases/flow/usecase4/FlowUseCase4Activity.kt

@@ -2,12 +2,14 @@ package com.lukaslechner.coroutineusecasesonandroid.usecases.flow.usecase4
 
 import android.os.Bundle
 import androidx.activity.viewModels
+import androidx.lifecycle.lifecycleScope
 import com.lukaslechner.coroutineusecasesonandroid.base.BaseActivity
 import com.lukaslechner.coroutineusecasesonandroid.base.flowUseCase4Description
 import com.lukaslechner.coroutineusecasesonandroid.databinding.ActivityFlowUsecase1Binding
 import com.lukaslechner.coroutineusecasesonandroid.utils.setGone
 import com.lukaslechner.coroutineusecasesonandroid.utils.setVisible
 import com.lukaslechner.coroutineusecasesonandroid.utils.toast
+import kotlinx.coroutines.launch
 import org.joda.time.LocalDateTime
 import org.joda.time.format.DateTimeFormat
 
@@ -25,8 +27,8 @@ class FlowUseCase4Activity : BaseActivity() {
  setContentView(binding.root)
  binding.recyclerView.adapter = adapter
 
- viewModel.currentStockPriceAsLiveData.observe(this) { uiState ->
- if (uiState != null) {
+ lifecycleScope.launch {
+ viewModel.currentStockPriceAsFlow.collect { uiState ->
  render(uiState)
  }
  }

app/src/main/java/com/lukaslechner/coroutineusecasesonandroid/usecases/flow/usecase4/FlowUseCase4ViewModel.kt

@@ -1,8 +1,7 @@
 package com.lukaslechner.coroutineusecasesonandroid.usecases.flow.usecase4
 
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.asLiveData
 import com.lukaslechner.coroutineusecasesonandroid.base.BaseViewModel
+import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onCompletion
 import kotlinx.coroutines.flow.onStart
@@ -12,7 +11,7 @@ class FlowUseCase4ViewModel(
  stockPriceDataSource: StockPriceDataSource
 ) : BaseViewModel<UiState>() {
 
- val currentStockPriceAsLiveData: LiveData<UiState> = stockPriceDataSource
+ val currentStockPriceAsFlow: Flow<UiState> = stockPriceDataSource
  .latestStockList
  .map { stockList ->
  UiState.Success(stockList) as UiState
@@ -23,5 +22,4 @@ class FlowUseCase4ViewModel(
  .onCompletion {
  Timber.tag("Flow").d("Flow has completed.")
  }
- .asLiveData()
 }