Android technical interview questions and answers are essential for candidates preparing for mobile app development roles in IT companies, startups, and software development firms. During interviews in TCS, Infosys, Wipro, Capgemini, Accenture, and Cognizant, recruiters evaluate your understanding of Android architecture, Activities, Intents, Services, broadcast receivers, UI components, layouts, Android Studio, and Java/Kotlin fundamentals. They also check your ability to debug apps, manage memory, optimize performance, handle APIs, and build secure and scalable mobile applications.
For freshers and job seekers, Android interviews commonly include scenario-based coding challenges, lifecycle-related questions, and questions on app publishing, permissions, and best practices. This guide provides a well-structured list of important technical interview Q&A to help you improve your concepts and prepare confidently. Practicing these questions will enhance your readiness for Android development roles in campus placements and professional interviews.
Mobile app developers should complement their Android skills with Java programming expertise and data structure knowledge
Showing 10 of 50 questions
41. What is the purpose of the RecyclerView
RecyclerView is used for displaying large data sets efficiently by reusing views and enabling flexible layouts.
42. What is a BroadcastReceiver
A BroadcastReceiver is a component that responds to system-wide broadcast messages. It can start when an event occurs, such as a completed download.
43. What is the difference between a ListView and a RecyclerView
RecyclerView is more efficient and flexible than ListView, enabling better performance with large data sets, and offers more features for animations.
44. How can you start a new Activity
You can start a new Activity by creating an Intent and using the startActivity method to launch it.
45. What is dependency injection
Dependency injection is a design pattern that allows the removal of hard-coded dependencies, making code more modular and testable.
46. What are the lifecycle methods of an Activity
The primary lifecycle methods are onCreate, onStart, onResume, onPause, onStop, and onDestroy, allowing the activity to manage its state effectively.
47. What is Android Jetpack
Android Jetpack is a suite of libraries, tools, and guidance to help developers build high-quality Android apps more easily.
48. Explain the difference between a synchronous and asynchronous task
Synchronous tasks block execution until completion, while asynchronous tasks allow other code to run alongside them, improving app responsiveness.
49. How do permissions work in Android
Permissions in Android control access to sensitive user data or features. Starting from Android 6.0, permissions need to be requested at runtime.
50. What is the purpose of a ViewModel in Android
A ViewModel is designed to store and manage UI-related data in a lifecycle-conscious way, surviving configuration changes like screen rotations.