Junior — Middle

What Jetpack ViewModel components do you use to manage data and UI state?

sobes.tech AI

Answer from AI

Components typically used for managing data and UI state in Jetpack ViewModel include:

LiveData — observable data that automatically updates the UI when changed. Enables a reactive approach.
MutableLiveData — a mutable version of LiveData, used within ViewModel to update data.
StateFlow / SharedFlow (from Kotlin Coroutines) — modern alternatives to LiveData for managing state and events with coroutine support.
SavedStateHandle — allows saving and restoring ViewModel state during UI recreation, such as screen rotation.

Example of using LiveData in ViewModel:

class MyViewModel : ViewModel() {
    private val _text = MutableLiveData<String>()
    val text: LiveData<String> = _text

    fun updateText(newText: String) {
        _text.value = newText
    }
}

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