What is ViewModel in Android?

Updated Feb 20, 2026

Short answer

ViewModel stores UI-related data and survives configuration changes like screen rotation.

Deep explanation

🔹 Key Features

Lifecycle-aware
Survives rotation
Holds UI state

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Markdown

![ViewModel](https://developer.android.com/static/topic/libraries/architecture/images/viewmodel-lifecycle.png)

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🔹 Why Important

Prevents data loss
Clean separation of UI & logic

Real-world example

Login screen retains user input after rotation.

Common mistakes

Storing context in ViewModel

Follow-up questions

ViewModel vs LiveData?

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