Android Jetpack: ViewModel

ViewModel is part of the Lifecycle library which was designed to help you solve common Android Lifecycle challenges and to make your apps more maintainable and testable. A ViewModel holds your app's UI data in a lifecycle conscious way that survives configuration changes. Separating your app's UI data from your Activity and Fragment classes lets you better follow the single responsibility principle: Your Activities and Fragments are responsible for drawing data to the screen, while your ViewModel can take

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