Android app development is still among the most lucrative careers in the tech field. With more and more businesses turning to mobile apps, Android developers are needed, needed, needed. However, now the interview process includes not only Android basics but also Android Developers that have experience with different development patterns, including MVVM and Clean Architecture, and the use of Kotlin and Jetpack Compose as programming languages.

If you want to be an Android Developer in the future, then here are some Android Interview Questions to help you build more confidence in 2025.

1. What is Android?

Android is an open-source cellular operating system created by Google. It is commonly used in mobile phones, tablets, Smart TVs, wearables, etc. Android is a flexible platform for building feature-rich mobile applications that it offers to developers.

2. Why does Android use Kotlin?

Google decided to integrate Kotlin as the main programming language for developing Android applications due to its readability and security.

Advantages of Kotlin:

• Clear and easy to read code.
• Null safety to reduce crashes
• Coroutines for asynchronous programming
• Seamless Java interoperability

3. What is Jetpack Compose?

Jetpack Compose is a novel way of constructing Android GUIs using the Kotlin language as a declarative UI toolkit.

There are several benefits to Jetpack Compose:

• Faster UI creation
• Less boilerplate code
• Easier state management
• Better maintainability

Compose has been one of the most prevalent topics in Android developer interviews, as more companies start adopting it.

4. Android SDK is what?

Android SDK, or Software Development Kit,t is a set of development tools for creating Android applications.

5. What is MVVM Architecture?

MVVM is an acronym for Model-View-ViewModel. It is a popular architectural design pattern in Android.

Components:

The model entails the data and business logic of the application.

View: Displays the user interface.

ViewModel connects the View and the Model and holds the data necessary for the view.

Another reason why employers prefer the MVVM architecture is its clean and readable code.

6. What is Clean Architecture?

Clean Architecture is a technique to structure an application into different layers for better scalability and maintainability.

Main Layers:

• Presentation Layer
• Domain Layer
• Data Layer

This way, developers will have the opportunity to develop easily updatable and maintainable software applications.

7. What are Kotlin Coroutines?

Coroutines are easy-to-implement asynchronous programs in Android applications. They are capable of executing background processes in a non-blocking way by initiating calls to APIs and database transactions, among others, and thus improving the user experience.

8. What are the basic Android components?

• Activity
• Fragment
• Service
• Broadcast Receiver
• Content Provider

These are still important factors to consider for a successful Android interview.

9. What is ADB?

Android Debug Bridge is a mechanism for connecting the Android phone to the computer to facilitate communication between both ends.

Common Uses:

• Installing applications
• Debugging apps
• Running shell commands
• Viewing device logs

10. What is the Difference Between XML and JavaScript?

While designing the XML layouts, it should be done manually. The updating of UI is manual as well. However, in the case of Jetpack Compose, UI is updated automatically since it is developed in Kotlin and uses reactive interfaces.

Conclusion

To prepare for Android job interview questions in 2025, it is necessary to know the basics about Android, as well as some contemporary techniques involved in Android application development, such as Kotlin, Jetpack Compose, MVVM, clean architecture, and Coroutines.

Since Android is one of the most popular operating systems, anyone wishing to live in this generation must be adept in it. The good news is that Ace Web Academy offers an Android App Development Course.