InVideo Android Developer Interview Questions and Answers

Q1. Basic questions from Swift
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One DSA round was there from HackerRank, you can do it in any language.

Q1. What is the difference between frame and bounds?
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The frame represents the view's position and size in its superview's coordinate system, while the bounds represents the view's position and size in its own coordinate system.
• Frame is relative to the superview, bounds is relative to the view itself

• Frame includes any transformations applied to the view, bounds does not

• Frame's origin is the top-left corner of the view, bounds' origin is always (0,0)
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Q2. What is ARC in Swift?
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ARC stands for Automatic Reference Counting. It is a memory management system used in Swift to automatically manage memory allocation and deallocation.
• ARC automatically tracks and manages the memory used by objects in Swift.

• It keeps track of how many references to an object exist and deallocates the object when there are no more references to it.

• ARC eliminates the need for manual memory management, reducing the risk of...read more
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Q1. Generic question, how can you fixed any issue when no one available? How you can manage your work independently? How we can improve our product based on user experience.
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Q1. This round is with team lead. Same hr type of question is there.
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Q1. Salary discussion was done in this round. Hr team told about the processes.
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Q1. Problem Solving, Data Structure round, 2 questions.
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Q1. Domain specific round
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Q1. Questions based on your previous projects.
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Q1. Salary discussion and joining date confirmation
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Q1. Android basics such as content providers
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Q2. Jetpack basics such as live data
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Q1. Explain about protocol extensions
Ans. 
Protocol extensions in iOS allow adding functionality to existing protocols without modifying the original protocol definition.
• Protocol extensions can provide default implementations for protocol methods.

• They can also add new methods and properties to conforming types.

• Protocol extensions are useful for adding common functionality to multiple types that conform to a protocol.

• Example: extending the Equatable protocol to ...read more
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Q2. Difference between merge and rebase
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Merge combines changes from different branches, while rebase moves the entire branch to a new base commit.
• Merge creates a new commit to combine changes, while rebase rewrites commit history.

• Merge preserves the commit history of all branches, while rebase creates a linear history.

• Merge is non-destructive and keeps the original branch intact, while rebase modifies the branch being rebased.

• Example: 'git merge feature-bran
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Q3. Explain about Protocol equitability
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Protocol equitability ensures that all participants in a communication protocol have equal access and opportunity to send and receive data.
• Ensures fair and equal treatment of all participants in a communication protocol

• Prevents any participant from having an unfair advantage or disadvantage

• Promotes transparency and inclusivity in communication protocols
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Q1. Difference between == and === in JavaScript
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The difference between == and === is that == compares values after type coercion while === compares values and types.
• The double equals (==) operator compares values after type coercion.

• The triple equals (===) operator compares values and types.

• Type coercion is the process of converting one data type to another.

• Type coercion can lead to unexpected results.

• For example, 1 == '1' is true because the string '1' is coerced t...read more
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Q1. Difference between commit( ) and apply( ) in SharedPreferences?
Ans. 
commit() writes the changes synchronously, apply() writes the changes asynchronously.
• commit() returns a boolean value indicating success or failure, while apply() does not.

• commit() writes the changes immediately to the disk, while apply() writes the changes to the memory first and then to the disk asynchronously.

• apply() is faster than commit() as it writes the changes in the background thread.

• Use commit() when you need...read more
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Q2. Difference between Alpha and Beta testing?
Ans. 
Alpha testing is done by internal teams before release, while beta testing is done by external users after alpha testing.
• Alpha testing is done by internal teams to identify bugs and issues before releasing the software to the public.

• Beta testing is done by external users who are not part of the development team to gather feedback and identify any remaining issues.

• Alpha testing is usually done in a controlled environmen...read more
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Q3. What is Product Flavour?
Ans. 
Product Flavour is a feature in Android development that allows you to create different versions of your app with different configurations.
• Product Flavours are used to create different versions of an app for different purposes or target audiences.

• Each Product Flavour can have its own unique code, resources, and configurations.

• Product Flavours are defined in the build.gradle file of an Android project.

• Examples of Produc...read more
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Q4. Can we use Activity without XML?
Ans. 
Yes, we can use Activity without XML by programmatically creating the UI elements.
• Activities can be created and managed entirely in code without using XML layouts.

• UI elements can be added to the activity using Java code.

• This approach is useful for creating dynamic UIs or for cases where XML layouts are not suitable.
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Q5. Can we downgrade the app from PlayStore?
Ans. 
Yes, users can downgrade an app from PlayStore by uninstalling the current version and installing an older version manually.
• Users can uninstall the current version of the app from their device.

• They can then search for the older version of the app APK file online or use a backup they may have.

• After downloading the older version APK, they can manually install it on their device.
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Q1. Struct vs class
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Structs are value types and classes are reference types in Swift.
• Structs are passed by value, while classes are passed by reference.

• Structs are copied when assigned to a new variable, while classes point to the same instance.

• Use structs for simple data types and classes for more complex objects.

• Example: struct Point { var x: Int, y: Int } vs class Person { var name: String, age: Int }
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Q2. Optional chaining
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Q1. Introduction about myself
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Q2. Why do I want to switch Job
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