Android Development Interview Prep

Explain the Android Activity lifecycle. What happens in each callback method?

What is the difference between Activity and Fragment?

Explain Intent and its types. When would you use each?

What is the difference between Serializable and Parcelable?

Explain RecyclerView vs ListView. Why is RecyclerView preferred?

What is ViewHolder pattern? Why is it important?

Explain ConstraintLayout and its advantages over other layouts.

What is Material Design? How do you implement it in Android?

Explain MVVM architecture in Android. What are the key components?

What is LiveData? How does it differ from RxJava or Kotlin Flow?

Explain Repository pattern in Android. Why is it important?

What is Clean Architecture? How do you implement it in Android?

Explain Kotlin Coroutines. How do they differ from threads?

What is Flow in Kotlin? How is it different from LiveData?

Explain suspend functions in Kotlin. When and how to use them?

How do you handle memory leaks in Android? What are common causes?

Explain Android app performance optimization techniques.

What is ProGuard/R8? How do you use it for app optimization?

Explain Retrofit in Android. How do you set it up and use it?

How do you handle API errors and retries in Android?