State

Android UI state

Android UI state
  1. What is UI state in Android?
  2. What is a UI state?
  3. How to save UI state in Android?
  4. How to handle UI events in Android?

What is UI state in Android?

The UI state is application data transformed by the ViewModel. The UI notifies the ViewModel of user events. The ViewModel handles the user actions and updates the state. The updated state is fed back to the UI to render.

What is a UI state?

We humans have different reactions to situations we are being faced with at any particular time so does a digital product and this reaction to user interactions is called U.I states. Depending on the context, these states are revealed to the user.

How to save UI state in Android?

The saveState() method allows your component to return a Bundle containing any state that should be saved from that component. SavedStateRegistry calls this method during the saving state phase of the UI controller's lifecycle. Important: The SavedStateHandle only saves data written to it when the Activity is stopped.

How to handle UI events in Android?

UI events are actions that should be handled in the UI layer, either by the UI or by the ViewModel. The most common type of events are user events. The user produces user events by interacting with the app—for example, by tapping the screen or by generating gestures.

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