MVVM with MediatorLiveData

ExampleActivity.kt

onCreate() {
  val viewModel = ... //initialize your view model
  
  viewModel.data.observe(this, Observer {
    //do operations based on the value
  })
  
  viewModel.getData()
}

RepositoryMediatorLiveData.kt

fun getData(): Flow<Data> = flow {
  //do network calls
  emit(data)
}.flowOn(Dispatcher.IO)

ViewModelMediatorLiveData.kt

val data: MediatorLiveData<Data> = MediatorLiveData()
 
 fun getData() {
   data.addSource(repository.getData().onStart {
     //do something
   }.asLiveData(viewModelScope.coroutineContext)) {
     data.value = it
   }
 }