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Photon Interactive Senior Android Application Developer Interview Questions, Process, and Tips
Photon Interactive Senior Android Application Developer Interview Experiences
1 interview found
Anonymous
I applied via Naukri.com and was interviewed in Jan 2023. There were 3 interview rounds.
Android sdk and kotlin related questions
(4 Questions)
- Q1. 1. Activity and fragment life cycle 2. Communicate between parents fragment to child fragment 3. Broadcasting receiver 4. How to implement MVVM design pattern for login page 5. Modifier in kotlin 6. Abstra...
- Ans.
The interview questions cover various topics related to Android development, including activity and fragment life cycle, communication between fragments, MVVM design pattern, Kotlin modifiers, abstract vs interface, coroutines, background services, and Room database implementation.
Understand the life cycle of activities and fragments in Android development
Use communication techniques like interfaces or shared view mode...
- Q2. 11. How to store sensible data
- Ans.
Sensitive data should be stored securely using encryption and secure storage mechanisms.
Use encryption algorithms like AES to encrypt sensitive data before storing it in the database.
Store encryption keys securely, separate from the data they encrypt.
Implement secure storage mechanisms like Android Keystore to protect sensitive data.
Avoid storing sensitive data in plain text or easily accessible formats.
- Q3. 12. Explain about the Keystore file
- Ans.
Keystore file is a secure container used to store cryptographic keys and certificates for Android applications.
Keystore file is used to securely store private keys, public keys, and certificates used for encryption and authentication in Android applications.
It helps in protecting sensitive information such as passwords, API keys, and other credentials.
Keystore file can be generated using keytool command-line utility or...
- Q4. 13. Write reverse string program in kotlin 14. Safe call and null check operator
- Ans.
Reverse a string and demonstrate safe call and null check operator in Kotlin
To reverse a string in Kotlin, you can use the built-in extension function 'reversed()'
Safe call operator '?' is used to safely access properties of nullable objects without causing NullPointerException
Null check operator '!!' is used to explicitly throw a NullPointerException if a nullable object is null
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I applied via Recruitment Consulltant and was interviewed before Jul 2021. There were 2 interview rounds.
(2 Questions)
- Q1. Core java, spring boot, sql, java8
- Q2. Basic concept of java
(1 Question)
- Q1. What is your Salary expectation
Interview Preparation Tips
Interview Questionnaire
4 Questions
- Q1. Java Basics
- Q2. Hashmap Working
- Ans.
Hashmap is a data structure that stores key-value pairs and provides fast access to values based on their keys.
Hashmap uses a hash function to map keys to indices in an array.
Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.
Hashmap provides constant time complexity for insertion, deletion, and retrieval of values.
Example: HashMap<S...
- Q3. Spring Boot, Microservices, Circuit Breaker
- Q4. SQL-> 3rd Highest Salary
- Ans.
To find the 3rd highest salary in SQL, we can use the 'LIMIT' and 'OFFSET' keywords.
Use 'ORDER BY' to sort the salaries in descending order
Use 'LIMIT 1 OFFSET 2' to select the 3rd highest salary
Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2
Skills evaluated in this interview
Selected
I applied via Walk-in and was interviewed in Feb 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Questions related to basics of Kotlin
- Q2. Questions related to basics of Android
(1 Question)
- Q1. Salary negotiation
Interview Preparation Tips
I appeared for an interview in Apr 2024.
(5 Questions)
- Q1. Questions related to kotlin coroutines in depth questions, scenario based questions
- Q2. Solid principles
- Q3. Architecture patterns
- Q4. Kotlin coroutine
- Q5. Unit testing, espresso scenario based
Interview Preparation Tips
- kotlin
- coroutines
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There was 1 interview round.
(2 Questions)
- Q1. Mostly they focus on java , oops concept. Rather than Android related questions
- Q2. Prepare basics of oops well
Selected
I applied via Approached by Company and was interviewed before Oct 2022. There were 4 interview rounds.
(2 Questions)
- Q1. 1 round consist base of development like OOPS, Basic Concept of solid, Design Pattern, Database, AZURE/AWS, Testing Frameworks, ORM etc.
- Q2. What is Oops in c#?
- Ans.
Object-Oriented Programming concepts in C#
Oops stands for Object-Oriented Programming.
It includes concepts like classes, objects, inheritance, polymorphism, encapsulation.
Example: Creating a class 'Car' with properties like 'make', 'model' and methods like 'drive'.
(1 Question)
- Q1. More discussion on basic topic along with some advance area like architecture, security, performance,
(1 Question)
- Q1. Mostly want to know how you are fit with there culture, more focus on personality.
Interview Preparation Tips
Skills evaluated in this interview
Rodrigo Fogaça
(2 Questions)
- Q1. What is high order function?
- Ans.
A high order function is a function that can take other functions as parameters or return functions as results.
High order functions can be used to create more flexible and reusable code.
They allow for functions to be passed as arguments, making code more modular.
Examples include map, filter, and reduce functions in functional programming.
- Q2. What is most efficient layout to use on android
- Ans.
ConstraintLayout is the most efficient layout to use on Android.
Allows for flat view hierarchy
Handles complex layouts efficiently
Supports responsive design
Provides tools for optimizing layouts
Skills evaluated in this interview
I applied via LinkedIn and was interviewed before Jan 2024. There was 1 interview round.
(2 Questions)
- Q1. Architecture pattern
- Q2. Kotlin advance
Selected
I appeared for an interview before Feb 2024.
They'll ask you to write any java 8 based simple code.
(2 Questions)
- Q1. More over on java 8, springboot and microservices
- Q2. Java collections and spring boot annotations
Interview Preparation Tips
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Photon Interactive Senior Android Application Developer Interview Process
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