Stack Overflow
Stack Overflow

Questions tagged [mutablelivedata]

LiveData which publicly exposes setValue(T) and postValue(T) method.

320 questions
1
vote
2 answers

Live data observer triggered twice on fragment created

The issue that I have is not actually bug or big problem. And all works as it should, but nevertheless it annoys me. In Fragment pbserver: viewModel.pageNumbersPosition.observe(viewLifecycleOwner) { if (it!=null) { …
Dim
  • 4,527
  • 15
  • 80
  • 139
1
vote
1 answer

Is this a bug relating to LiveData

I have isolated the code to show this problem. I have a recyclerview inside a fragment. I also have LiveData and MutableLiveData. In the ViewModel.kt code there are these two lines in this order and it works fine: private val mMLD =…
EliFromToronto
  • 81
  • 1
  • 8
1
vote
1 answer

MutableLiveData value not updating confusion?

Working on a project in Kotlin in AndroidStudio, fairly basic stuff, but MutableLiveData is not working like I expect it to. Am I doing something wrong or maybe I'm confused on how it works? I'm using a viewModel to handle the LiveData and for…
Rayge
  • 11
  • 2
1
vote
1 answer

Convert MutableLiveData to MutableState

I am new to jetpack compose. I have this value which is a MutableLiveData. I want ofc to observe on the object and get the value. I was wondering if i could convert the MutableLiveData to MutableState in an easy way? To make it even simpler, or is…
Meyben
  • 451
  • 3
  • 15
1
vote
1 answer

Observer is called multiple times when DialogFragment is opened with screen rotation changes

I have an activity that implements an observer inside the OnCreate for a MutableLiveData variable that is in a ViewModel. override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) ... …
Luis Botero
  • 25
  • 4
1
vote
1 answer

Android's MutableLiveData should use nullable objects only?

My simplified code is: class MyViewModel : ViewModel() { private val myLiveData: MutableLiveData = MutableLiveData(MyObject()) val myObject: MutableLiveData get() = myLiveData fun addItem(item:…
ocramot
  • 1,361
  • 28
  • 55
1
vote
0 answers

How to bound view margin to viewmodel string live data?

Current issue is a bit complicated, so I will outline some words with "" so whoever reads this could be able to understand text below. I have a "page viewer", which implements "recycler view adapter". Each page has 4 textviews inside it, i pass text…
LAO
  • 87
  • 10
1
vote
0 answers

Kotlin MutableLiveData clean or update

I am pulling data from api in my application. I keep the data I have in MutableLiveData. There is no problem so far. However, when I filter and pull other data, it lists the new data under the old data. My goal is to delete the old data and show…
Theodore Bagwell
  • 11
  • 2
1
vote
1 answer

How do you reset MutableLiveData/LiveData values?

I'm making a trivia game that fetches questions from an API service. I have code like this in my view model. private var _currentQuestion = MutableLiveData() val currentQuestion: LiveData = _currentQuestion fun…
SmallGrammer
  • 893
  • 9
  • 19
1
vote
0 answers

Jetpack compose function is not getting updated when changing the value of livedata in viewmodel

I am trying jetpack compose with ViewModel. Whenever the user clicks on some item I want to select that item and deselect everything else. The problem is if I try to manipulate the same mutable list with the new value it is not working. But if I try…
Chirag Parekh
  • 102
  • 2
  • 7
1
vote
1 answer

Why we need to extend ```ViewModel()``` for DataBinding and LiveData to create LiveData object

Without extending ViewModel() just with simple class I am able to implement LiveData and DataBinding example but I show in google developer doc to extend ViewModel() to create object of LiveData.So why we need to extend…
Purvesh Dodiya
  • 594
  • 3
  • 17
1
vote
0 answers

How to show loader again when using paging Library for Filter/Sort

enter code here //constructor ProductsViewModel(String seoUnique) { // getting our data source factory ProductsDataSourceFactory productsDataSourceFactory = new ProductsDataSourceFactory(seoUnique, ""); // getting the live data…
bishal
  • 13
  • 5
1
vote
2 answers

Observe list of live data in java

I have a list of liveData, like List>. I want to observe this list so that whenever the String inside the LiveData changes, it would notify the observer of the list with this String. How can I do this? My list elements are strictly…
Mr. Techie
  • 622
  • 7
  • 17
1
vote
2 answers

Adding an object to a mutable live data list

I am trying to add two shops to a mutable list like so: private var _shopList = MutableLiveData>() var shopList: LiveData> = () get() = _shopList // This function will get the arrayList items fun…
Lyndon2309
  • 49
  • 8
1
vote
2 answers

Android ViewModel MutableLiveData update multiple times

Scenario Hi, I have an Activity with a ViewPager. In the ViewPagerAdapter, I create instances of a same fragment with different data. And in each instance I initialize a ViewModel val dataViewModelFactory = this.activity?.let {…
The Bat
  • 1,085
  • 1
  • 13
  • 31
1 2 3
…
21 22