Infosys Sr. Mobile App Developer Interview Questions and Answers

There is aptitude test

Yeah some times there is taff questions too

Q1. I can't share quotation
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Q2. No I can't share here
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Q1. Android Activity LifeCycel
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Q2. Android Fragment Life Cycle. The interviewer asked me which life cycle methods get triggered in different scenarios.
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Q3. Higher Order and Lambda Functions in Kotlin
Ans. 
Higher Order and Lambda Functions in Kotlin
• Higher order functions are functions that take other functions as parameters or return functions

• Lambda functions are anonymous functions that can be used as arguments or return values in higher order functions

• They provide a concise way to write code and enable functional programming in Kotlin
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Q4. Kotlin OOPS concepts - Classes, Objects inheritance, Polymorphism, Encapsulation, Abstraction, Interfaces, Visibility Modifiers, Companion Object, Object Expression, Object Declaration
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Q5. Intents, Intent Filter, Broadcast Recievers, Push Notifications
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Q6. Unit Testing and UI Testing
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Q7. Multi Modular Project structure
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Multi Modular Project structure is an architectural approach that divides an application into multiple modules for better organization and scalability.
• Divide the application into separate modules based on functionality or features.

• Each module should have its own set of code, resources, and dependencies.

• Modules can communicate with each other through defined interfaces or APIs.

• Modularization helps in code reusability, e...read more
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Q8. MVVM architecture, VM advantages, Livedata
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Q9. Multi Threading, Coroutines
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Q10. Dependency Injection
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Q11. Showed me Some Kotlin codes and ask me to explain those codes and tell the output
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Q12. Null Pointer Prevention and Type safety in kotlin
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Null pointer prevention and type safety in Kotlin
• Kotlin uses nullable and non-nullable types to prevent null pointer exceptions

• The safe call operator '?' can be used to safely access nullable variables

• The '!!' operator can be used to explicitly throw a null pointer exception

• Kotlin's type system ensures type safety by checking types at compile-time
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Q13. Scope functions
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Q1. Just basic details like current salary, expectation, Notice Period, Location Preferences
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Q1. This was basically salary negotiation round
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Q1. Tell me about yourself.
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Q1. What is AnyObject, Observer, coding round
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Q1. Asked about react native concepts like state, props, class and functional components, pure components, HOC, redux, Axios, responsive UI, security(handling token)
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Q1. About git, own libraries those u have written
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Q1. What are your salary expectations?
Ans. 
I am open to discussing salary based on the responsibilities and requirements of the position.
• I am flexible and open to negotiation.

• I would like to be compensated fairly for my skills and experience.

• I am interested in discussing the overall compensation package, including benefits and opportunities for growth.

• I am confident that we can come to a mutually beneficial agreement.
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Q2. What is your family background?
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My family background is diverse and multicultural, with members from different professions and backgrounds.
• My father is a software engineer and my mother is a teacher.

• I have two siblings, one is studying medicine and the other is pursuing a career in finance.

• We have relatives living in different countries, which has exposed me to various cultures and perspectives.
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Q3. Share details of your previous job.
Ans. 
I worked as a Mobile Application Developer at XYZ Company.
• Developed and maintained mobile applications for iOS and Android platforms.

• Collaborated with cross-functional teams to gather requirements and design user-friendly interfaces.

• Implemented new features and enhancements to existing applications.

• Performed code reviews and debugging to ensure high-quality and bug-free applications.

• Optimized mobile applications for pe...read more
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Q4. Why are you looking for a change?
Ans. 
Looking for new challenges and growth opportunities in mobile app development.
• Seeking a more challenging role to enhance my skills and knowledge in mobile app development.

• Interested in exploring new technologies and trends in the mobile app industry.

• Want to work in a dynamic and innovative environment that fosters creativity and learning.

• Seeking better career prospects and growth opportunities.

• Looking for a company wit...read more
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Q5. Tell me about yourself.
Ans. 
I am a mobile application developer with 5 years of experience in developing iOS and Android applications.
• 5 years of experience in mobile application development

• Proficient in iOS and Android development

• Strong knowledge of programming languages such as Swift, Java, and Kotlin

• Experience in developing user-friendly and intuitive mobile interfaces

• Familiarity with mobile app testing and debugging processes

• Ability to work in
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