LiveData which publicly exposes setValue(T) and postValue(T) method.
Questions tagged [mutablelivedata]
320 questions
2
votes
1 answer
Android MediatorLiveData source subscription does not trigger
In my project I'm using a slightly modified repository pattern:
DataSource (e.g. API, database). Provides CRUD of entities
Repository of specific data (e.g. UserRepository, SettingsRepository) that handles reconciliation of DataSources (e.g. update…
fonix232
- 2,132
- 6
- 39
- 69
2
votes
0 answers
Call function when condition pass - ViewModel, LiveData, Transformations
I want to call a function in a ViewModel which returns nothing when a value is different from 0.
Here is the code I have so far, but it doesn't get triggered.
val categoryId = MutableLiveData()
val waitToCallApi: LiveData =…
Robert Pal
- 714
- 1
- 7
- 15
2
votes
1 answer
How to fix null pointer for "resp" while observing the value of live data
My code works fine with view model but when I start observing the value using live data in
model.d.observe(this, Observer {
r->resp=r
})
type of r in resp=r is changed from RespCategories to RespCategories?
and it…
Pratik Sahay
- 31
- 7
2
votes
2 answers
Wrapping MutableList in either LiveData or MutableLiveData
What is the recommended means of wrapping a MutableList within either LiveData or MutableLiveData such that one can modify the list and observe the changes it undergoes ?
I have some fairly short tables (<20 items) in Room (It caches the values…
Carel
- 3,289
- 2
- 27
- 44
2
votes
1 answer
How to use livedata for making multiple network calls?
i am working on a project in which i am trying to implement Android architecture components with data binding.
I have an activity, viewmodel and repository and i am crating a login page right now.
I have to make two repository functions to make the…
Vipin KT
- 31
- 2
2
votes
1 answer
Databinding/Live data handle configuration changes with Retrofit/Rxjava
Please look at this code:
Main activity:
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
MutableLiveData mutableUser = new MutableLiveData<>();
…
user1209216
- 7,404
- 12
- 60
- 123
1
vote
1 answer
LiveData observer triggered again on fragment back navigation
I am building an Android app that displays a list of categories using a RecyclerView in a Fragment. When the user taps on a category, I navigate to the same Fragment with the child categories of the selected category. If the selected category has no…
Pratik Fagadiya
- 1,195
- 7
- 21
1
vote
1 answer
Why declare mutableLiveData class with val type?
Why not use mutableLiveData of the val type as a substitute for the var type?
Isn't it a violation to be able to set on the val type?
Like, for example:
Example of a val type
class LoadDetailViewModel : ViewModel() {
private val _liveData =…
LineSmile
- 25
- 4
1
vote
1 answer
Kotlin MutableLiveData not changing
I have a loginStatus value declared as MutableLiveData:
val loginStatus = MutableLiveData()
When the user logins, the value will be changed to true in the viewModel:
withContext(Dispatchers.Main){
loginStatus.value = true
}
When…
Cipri
- 57
- 1
- 9
1
vote
2 answers
How can I track liveData subscription?
I have a problem with liveData. It doesn't update the fragment with the information. I think it unsubscribes from viewLifecycleOwner at some particular moment. Is there a way to track the subscription of liveData and see if it unsubscribes or not?…
Alex20280
- 97
- 6
1
vote
3 answers
How to add and remove item in MutableLiveData> and notify the UI in kotlin
I want to add and remove items in MutableLiveData>. Adding items to the list is working fine and UI is also updating. But removal from array list is not working properly.
@HiltViewModel
class SecondViewModel @Inject constructor() :…
Syed Baber Mehmood
- 33
- 6
1
vote
1 answer
Data not transferring from one fragment to another using ViewModel and LiveData
I have 2 fragments:
HomeFragment
ListFragment
I am trying to send data from HomeFragment to ListFragment using ViewModel and LiveData but i am not able to do so. ListFragment is not updating the value.
So i have 2 buttons:
Groceries and Electronics…
user20324171
1
vote
1 answer
How to Updating jetpack compose with MutableLiveData.observeAsState() more often
fun Conversation(mainViewModel: MainViewModel) {
var stat = mainViewModel.getTweet().observeAsState()
val listState = rememberScrollState()
stat?.let {
if( stat.value == null){
Log.d("DAD","DASSA")
// null…
user20297399
- 23
- 5
1
vote
1 answer
MutableLiveData, LiveData List empty or add item first position
I don't quite understand the behavior of MutableLiveData or I can't find the proper documentation.
But I need help.
I need to add an element to the first position of the array and tried with "plus" but it doesn't work properly. Or is there a way to…
kekaben971
- 13
- 3
1
vote
1 answer
Problem Implement Update UI with LiveData, Retrofit, Coroutine on Recyclerview : adapter Recyclerview not update
I'm newbie use Kotlin on my dev apps android,
and now, I on step learn to implement Update UI with LiveData, Retrofit, Coroutine on Recyclerview. The My Apps:
MainActivity > MainFragment with 3 Tab fragment > HomeFragment, DashboardFragment, and…
Amay Diam
- 2,561
- 7
- 33
- 57