Source: ```class MyPublishedAdvertisementsViewModel(private val advertisementRepository : Advertise...

# android-architecture

[Ofir Bar]

Source:

class MyPublishedAdvertisementsViewModel(private val advertisementRepository : AdvertisementRepository) : ViewModel(){

    var _myPublishedAdvertisements : MutableLiveData<NetworkCall<MyPublishedAdvertisementsResponse>> = MutableLiveData()
    val myPublishedAdvertisements : LiveData< NetworkCall<MyPublishedAdvertisementsResponse> > = _myPublishedAdvertisements

    // Called every time our UI is #onStarted
    fun getFreshData(){
        _myPublishedAdvertisements.value = liveData {
            emit(NetworkCall<MyPublishedAdvertisementsResponse>(NetworkStatus.LOADING, null, ""))
            val publishedAdvertisements = advertisementRepository.getMyPublishedAdvertisements()
            emit(publishedAdvertisements)
        }
    }

}

[Kirill Prybylsky]

Does your NetworkCall extends LiveData?

[Ofir Bar]

No

[Ofir Bar]

It is a wrapper data class to be used for all my network responses, this is the code:

data class NetworkCall<out T>(val status: NetworkStatus, val data: T?, val message: String?) {

    companion object {
        fun <T> success(data: T?): NetworkCall<T> {
            return NetworkCall(NetworkStatus.SUCCESS, data, null)
        }

        fun <T> error(msg: String, data: T?): NetworkCall<T> {
            return NetworkCall(NetworkStatus.ERROR, data, msg)
        }

        fun <T> loading(data: T?): NetworkCall<T> {
            return NetworkCall(NetworkStatus.LOADING, data, null)
        }
    }

}

[Kirill Prybylsky]

But you’re putting liveData{} as a value of another live data

[Ofir Bar]

I am not sure what I am doing wrong 🤔

[Kirill Prybylsky]

Seems like you are doing this, isn’t?

Untitled

[Ofir Bar]

Ohhhh, ok I got what you’re saying

But I still don’t understand how I use liveData{} to change the values of a MutableLiveData.


Why for LiveData I can use liveData{}, and for MutableLiveData I can’t?

[Kirill Prybylsky]

For my opinion you are trying to achieve something completely wrong. You should rethink this code. Also, there shouldn’t be any network requests from your view model class this is bad practice.

[Ofir Bar]

I will check thanks for the help anyway @Kirill Prybylsky