Lead Android Developer

Lead Android Developer Interview Questions and Answers

Updated 6 Sep 2024

Q1. Memory leaks in android and how to avoid them

Ans.

Memory leaks in Android can occur when objects are not properly released from memory, leading to performance issues.

  • Avoid using static variables as they can hold references to objects longer than needed.

  • Be cautious with context references, as holding onto them can prevent objects from being garbage collected.

  • Use tools like LeakCanary to detect memory leaks and fix them before they become a problem.

Q2. how to make recyclerview more performant

Ans.

To make RecyclerView more performant, optimize item layout, use view recycling, implement pagination, and prefetch data.

  • Optimize item layout by using ConstraintLayout for complex item views

  • Implement view recycling to reuse existing views instead of creating new ones

  • Implement pagination to load data in chunks and reduce memory usage

  • Prefetch data to load items in advance for smoother scrolling

Q3. strong reference vs weak reference

Ans.

Strong references prevent garbage collection, while weak references allow objects to be collected if no strong references exist.

  • Strong references prevent the garbage collector from collecting an object as long as the reference is active.

  • Weak references allow the garbage collector to collect an object if there are no strong references to it.

  • Strong references are typically used for objects that should not be collected, while weak references are used for caching or temporary ref...read more

Q4. Broadcast Receiver in android

Ans.

Broadcast Receiver is a component in Android that allows the app to receive and react to broadcast messages from other apps or the system.

  • Broadcast Receiver is registered in the AndroidManifest.xml file or dynamically in code.

  • It can listen for system-wide broadcast messages or custom broadcast messages sent within the app.

  • Broadcast Receiver can perform actions like starting a service, updating UI, or triggering notifications.

  • Example: Registering a Broadcast Receiver to listen...read more

Are these interview questions helpful?

Q5. Services in android

Ans.

Services in Android are background components that perform long-running operations without a user interface.

  • Services run in the background even if the app is not in the foreground.

  • They can be used for tasks like playing music, downloading files, or syncing data.

  • There are two types of services: started services and bound services.

  • Started services are started with startService() and run independently of the app's lifecycle.

  • Bound services are bound to a component (e.g. Activity)...read more

Lead Android Developer Jobs

Lead Android Developer 7-10 years
EPAM Anywhere
3.7
Pune
Lead Android Developer 7-10 years
EPAM Anywhere
3.7
Bangalore / Bengaluru
Lead Android Developer 3-6 years
Bright Vision Technologies
4.4
New Delhi
Interview Tips & Stories
Ace your next interview with expert advice and inspiring stories

Interview experiences of popular companies

 • 1 Interview
View all

Calculate your in-hand salary

Confused about how your in-hand salary is calculated? Enter your annual salary (CTC) and get your in-hand salary

Lead Android Developer Interview Questions
Share an Interview
Stay ahead in your career. Get AmbitionBox app
qr-code
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+

Reviews

4 L+

Interviews

4 Cr+

Salaries

1 Cr+

Users/Month

Contribute to help millions

Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.

Follow us
  • Youtube
  • Instagram
  • LinkedIn
  • Facebook
  • Twitter