Times Internet Senior Android Developer Interview Questions, Process, and Tips

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Q1. Design question which checks oops concept and data structure
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Q1. What is coroutine?
Ans. 
Coroutines are light-weight threads that help manage asynchronous tasks efficiently in Android development.
• Coroutines are part of Kotlin's standard library and are used for managing asynchronous tasks without blocking the main thread.

• They allow developers to write asynchronous code in a sequential manner, making it easier to understand and maintain.

• Coroutines can be used for tasks like network requests, database operat...read more
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Q2. What is Services in Java.
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Services in Java are components that run in the background to perform long-running operations independently of the UI.
• Services can be used to handle network transactions, play music, perform file I/O, etc.

• Services do not have a user interface.

• Services can be started, bound, or both.

• Examples of services include music player running in the background, downloading files, etc.
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Group discussion men's how is working and only one facing the problem i as the problem

Q1. Coroutunes kotlin and structured concurrency
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Q2. Generics in kotlin and java interportability with kotlin
Ans. 
Generics in Kotlin and Java can be used interchangeably, but there are some differences in syntax and features.
• Kotlin supports declaration-site variance, while Java supports use-site variance.

• In Kotlin, you can use reified generics with inline functions, which is not possible in Java.

• Kotlin has nullable types by default, while in Java you need to use wildcards for similar behavior.
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Q1. Asked about my current work
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Q1. Tell me about yourself
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I am a Senior Android Developer with 5+ years of experience in building high-quality mobile applications.
• 5+ years of experience in Android development

• Strong knowledge of Java and Kotlin programming languages

• Experience in building and maintaining complex mobile applications

• Familiarity with design patterns like MVVM and MVP

• Proficient in using Android Studio and other development tools
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Q2. What are content providers? What are its uses?
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Content providers are components in Android that manage access to a structured set of data. They are used to share data between apps.
• Content providers allow apps to securely share data with other apps

• They provide a standard interface for querying and modifying data

• Content providers are often used to access data from databases or files

• Examples include the Contacts Provider for accessing contact information and the Media
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Q3. What is a Service? How can a notification in a Foreground Service interact with other components e.g. buttons in a music player?
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A Service is a component that runs in the background to perform long-running operations. A Foreground Service is a Service that has a notification to show the user that it is running.
• A Service is used to perform long-running operations in the background, such as playing music in a music player app.

• A Foreground Service is a type of Service that has a notification to indicate to the user that it is running and to give it...read more
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Q4. What functions would you add in an Image Loader library?
Ans. 
Functions to add in an Image Loader library for Senior Android Developer role
• Support for loading images from different sources like network, local storage, and resources

• Caching mechanism to improve performance and reduce network calls

• Ability to handle image loading in different formats like JPEG, PNG, GIF, etc.

• Support for placeholder images while the actual image is being loaded

• Error handling for failed image loading r...read more
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Q5. Why do we prefer the use of ConstraintLayout?
Ans. 
ConstraintLayout is preferred for its flexibility, efficiency, and ease of use in creating complex layouts.
• Allows for creating complex layouts with a flat view hierarchy, improving performance

• Supports responsive design with constraints that adapt to different screen sizes

• Easier to use and understand compared to other layout options like RelativeLayout

• Provides tools like Layout Editor in Android Studio for visual editin
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Q6. Which data structure is used to store views in a layout?
Ans. 
The data structure used to store views in a layout is a tree structure.
• Views in a layout are stored in a hierarchical tree structure.

• Each view is a node in the tree, with parent-child relationships defining the layout.

• Examples include LinearLayout, RelativeLayout, and ConstraintLayout.
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Medium question on hashmap

Q1. Design question which checks oops concept and data structure
Add your answer