Junior Android Developer Interview Questions

8,379 junior android developer interview questions shared by candidates

Core Android Concepts: Activity lifecycle, Fragment usage, threading (AsyncTask, Coroutines, Executors), View Binding, etc. Frameworks and Libraries: Knowledge of Jetpack components (Room, Navigation, LiveData, etc.), dependency injection (Dagger/Hilt/Koin), and build tools (Gradle). UI/UX: Custom views, animations, and Material Design principles. Networking: REST APIs, Retrofit, WebSocket, and offline caching. Performance Optimization: Memory leaks, APK size reduction, app performance tuning. Security: Best practices for data storage, encryption, and authentication. Example Questions: How do you handle configuration changes in Android? Explain the difference between Service and IntentService. How would you optimize app startup time?

Android Developer

Interviewed at A S Fashion Group

4
Nov 30, 2024

Core Android Concepts: Activity lifecycle, Fragment usage, threading (AsyncTask, Coroutines, Executors), View Binding, etc. Frameworks and Libraries: Knowledge of Jetpack components (Room, Navigation, LiveData, etc.), dependency injection (Dagger/Hilt/Koin), and build tools (Gradle). UI/UX: Custom views, animations, and Material Design principles. Networking: REST APIs, Retrofit, WebSocket, and offline caching. Performance Optimization: Memory leaks, APK size reduction, app performance tuning. Security: Best practices for data storage, encryption, and authentication. Example Questions: How do you handle configuration changes in Android? Explain the difference between Service and IntentService. How would you optimize app startup time?

Com a PTW: pergunta normais da área, o que é SOLID, Clean architecture, flows, etc. Com o cliente: perguntas de baixo nível de kotlin e android. O que é uma data class, e como o kotlin compila essa classe em comparação com uma classe normal e 1 hora e meia desse tipo de pergunta que não fazem sentido saber na ponta da língua.
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Senior Android Developer

Interviewed at PTW

3.2
Feb 18, 2025

Com a PTW: pergunta normais da área, o que é SOLID, Clean architecture, flows, etc. Com o cliente: perguntas de baixo nível de kotlin e android. O que é uma data class, e como o kotlin compila essa classe em comparação com uma classe normal e 1 hora e meia desse tipo de pergunta que não fazem sentido saber na ponta da língua.

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