ViewModel uses a MediatorLiveData to observe changes of the LiveData that comes from repository. I've added the data as a source to observe changes and remove it after it triggers to prevent firing events multiple times when I get data multiple times.

There is no problem that observes LiveData in ViewModel contains observed LiveData. Use Flow class MyViewModel : ViewModel() { private val myLiveData = MutableLiveData(1) init { viewModelScope.launch { myLiveData.asFlow().collect { // Do Something } } } } Use StateFlow

May 31, 2017 · During Google I/O, Google introduced architecture components which includes LiveData and ViewModel which facilitates developing Android app using MVVM pattern. This article discusses how can these components serve an android app that follows MVVM. If you are familiar with MVVM, you can skip this section completely.

Aug 6, 2021 · You can check live data meal to see if it's empty or null and then trigger with your live data empty like this: In the viewmodel, you create a livedata isEmptyMeals. This live data variable will always trigger when meals value change and will check if your meals value are empty or null. MealsViewModel.kt

Feb 10, 2025 · LiveData is a wrapper that can be used with any data, including objects that implement Collections, such as List. A LiveData object is usually stored within a ViewModel object and is accessed via a getter method, as demonstrated in the following example:

Jan 9, 2019 · ViewModel is a helper class which is part of the Android Architecture Components, it helps us to store, manage and prepare UI related data in a lifecycle conscious way.

Jan 23, 2025 · In a simple way, live data observe the variables of ViewModel Classes and update the UI if any based on their changes. It acts as a bridge between your data and the UI, ensuring that the app...

Nov 17, 2024 · The LiveData and ViewModel patterns, part of the Android Architecture Components, provide a powerful framework for building lifecycle-aware data streams and maintaining UI data across configuration changes.

Feb 10, 2025 · ViewModel overview Part of Android Jetpack. The ViewModel class is a business logic or screen level state holder. It exposes state to the UI and encapsulates related business logic. Its principal advantage is that it caches state and persists it through configuration changes.

Sep 12, 2017 · The recommended way to communicate between ViewModels and Views is the observer pattern, using LiveData or observables from other libraries. A very convenient way to design the presentation...