Android Q & A


How do I use ViewModel in Android?

Using ViewModel in Android simplifies the management of UI-related data across different lifecycle states. Here’s a straightforward guide to using ViewModel:


Add Dependency: Include the ViewModel dependency in your app’s build.gradle file.


Create ViewModel: Make a class that extends ViewModel to hold your UI data and logic.


Instantiate ViewModel: Get an instance of your ViewModel within your activity or fragment using ViewModelProvider.


Access Data: Access ViewModel data and observe LiveData objects to receive updates in your UI.


Update Data: Modify ViewModel data when needed, such as in response to user actions or network events.


Handle Changes: ViewModel instances persist across configuration changes like screen rotations, maintaining your UI data intact.


By following these steps, you can effectively use ViewModel to streamline the management of UI-related data in your Android app, making your code cleaner and more maintainable.

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