Context

In Android interviews, this question tests whether you understand lifecycle-aware architecture, dependency management, and separation of concerns.

Core Question

Explain the difference between ViewModel and AndroidViewModel.

Address these points:

1. What each class is intended for and how they differ in constructor dependencies.
2. Why AndroidViewModel exposes Application and what trade-offs that creates.
3. Why modern Android code usually prefers plain ViewModel with dependency injection over AndroidViewModel.

Scope Guidance

The interviewer expects a practical architectural explanation rather than framework trivia. A strong answer should cover lifecycle behavior, testability, coupling to Android framework classes, and when AndroidViewModel is still acceptable.