Aapna Infotech Android Developer Interview Questions and Answers

Q1. Previous Projects, Firebase, Android LifeCycle, Intent, Fragment Lifecycle, Sqlite, Room, Third party Sdk
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Q2. Given Assignment to complete base on android
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Q1. Project used technology related questions
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Q2. What are the in-depth questions related to the framework you mentioned?
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Q1. Array and string manipulation related questions all are basics
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Q2. Task related to your framework
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Q1. What are the projects you have worked on, and can you describe their architecture?
Ans. 
I have worked on projects involving e-commerce, social networking, and productivity apps with client-server architecture.
• Developed an e-commerce app with a client-side interface for users to browse products and a server-side database for inventory management.

• Built a social networking app with a client-server architecture for users to create profiles, connect with friends, and share updates.

• Designed a productivity app w...read more
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Q2. What are some basic questions regarding the tools you use to build projects?
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Q1. What deep questions related to your field were asked during the interview conducted by the tech lead?
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Q1. Introduction about self and working projects.
Ans. 
I am an experienced Android Developer with a passion for creating innovative mobile applications.
• Developed a fitness tracking app using Kotlin and Firebase

• Implemented real-time chat functionality in a social networking app

• Optimized app performance by reducing memory usage and improving UI/UX
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Q2. What is services and use of each?
Ans. 
Services in Android are components that run in the background to perform long-running operations.
• Services are used to perform tasks without interacting with the user interface.

• There are two types of services: Started services and Bound services.

• Started services are used for tasks that run in the background even if the app is not in the foreground.

• Bound services are used to interact with other components in the app.

• Exam...read more
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Q3. How you can add pdf ? is it possible?
Ans. 
Yes, it is possible to add PDF in Android applications.
• Use PDF rendering libraries like PDF.js or AndroidPdfViewer to display PDF files in your app.

• You can also use WebView to display PDF files by loading them as a URL.

• To add PDF files as assets in your app, place them in the assets folder and access them using AssetManager.
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Q4. Explain MVVM structure.?
Ans. 
MVVM is an architectural design pattern that separates the user interface from the business logic and data model.
• Model - Represents the data and business logic

• View - Represents the UI components

• ViewModel - Acts as a mediator between the Model and View, handling data manipulation and updates

• Data binding is used to connect the View and ViewModel
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Q5. What is oops structure?
Ans. 
Oops structure refers to Object-Oriented Programming concepts like classes, objects, inheritance, encapsulation, and polymorphism.
• Oops structure is based on the principles of classes and objects.

• It includes concepts like inheritance, where a class can inherit properties and methods from another class.

• Encapsulation is another key concept, where data is kept private within a class and accessed through public methods.

• Poly...read more
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Q1. Assign a practical to do.
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Q1. Explain process and explain compony structure.
Ans. 
The process and company structure of an Android Developer role
• The process involves designing, developing, and testing Android applications

• Company structure may include teams like development, design, QA, and product management

• Collaboration with cross-functional teams is essential for successful app development
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Q1. What is OOPS Concept?
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OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOPS focuses on creating objects that interact with each other to solve a problem.

• It involves concepts like Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• E...read more
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Q2. What is Grand Central Dispatch ?
Ans. 
Grand Central Dispatch is a technology used in iOS and macOS to manage concurrent operations by allowing tasks to be executed concurrently and efficiently.
• Grand Central Dispatch (GCD) is a low-level API for managing concurrent operations.

• It allows tasks to be executed concurrently on multicore hardware.

• GCD automatically manages the execution of tasks and optimizes performance.

• GCD provides dispatch queues to manage task...read more
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Algorithm of strings and array

Q1. What is your role in team?
Ans. 
As a Senior IOS Developer, my role in the team is to lead the development of iOS applications, provide technical guidance, and collaborate with other team members.
• Lead the development of iOS applications

• Provide technical guidance to junior developers

• Collaborate with other team members to ensure project success
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Q1. Previous Projects, Firebase, Android LifeCycle, Intent, Fragment Lifecycle, Sqlite, Room, Third party Sdk
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Q2. Given Assignment to complete base on android
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Q1. What was my role in previous company?
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Q2. Why I am looking for job change?
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Q3. What is my salary expectation?
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