Accion Labs Senior Android Application Developer Interview Questions and Answers

Q1. Types of job in kotlin coroutine
Ans. 
Types of jobs in Kotlin coroutine include launch, async, withContext, and runBlocking.
• launch: starts a new coroutine without blocking the current thread

• async: starts a new coroutine and returns a Deferred object with a result

• withContext: switches the coroutine context within a coroutine

• runBlocking: blocks the current thread until the coroutine inside it is completed
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Q2. What is Flow, Channel diffrent between StateFlow and SharedFlow
Ans. 
Flow is a cold asynchronous data stream, Channel is a hot asynchronous data stream. StateFlow is a hot asynchronous data stream with a state, SharedFlow is a hot asynchronous data stream without a state.
• Flow is a cold asynchronous data stream that emits values one by one.

• Channel is a hot asynchronous data stream that can have multiple subscribers.

• StateFlow is a hot asynchronous data stream that retains the most recent ...read more
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Q3. If Flow lifecycle aware
Ans. 
Flow lifecycle aware means using Kotlin Flow with lifecycle awareness in Android development.
• Flow lifecycle aware helps manage data streams in Android apps

• It ensures that data emissions are only observed when the lifecycle is in the appropriate state

• Example: Using Flow with LiveData to update UI components based on lifecycle events
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Q4. What is inline function and highorder function?
Ans. 
Inline functions are functions that are expanded in place at the call site, while high-order functions are functions that can take other functions as parameters or return them.
• Inline functions are expanded in place at the call site to improve performance.

• High-order functions can take other functions as parameters or return them.

• Example of high-order function: map() function in Kotlin.
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Q1. Explain hooks in react
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Hooks are a new addition in React 16.8 that allow you to use state and other React features without writing a class.
• Hooks are functions that let you use state and other React features in functional components.

• useState() is a hook that allows you to add state to functional components.

• useEffect() is a hook that allows you to perform side effects in functional components.

• Custom hooks are reusable functions that can contai...read more
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Create weather application in react native with unit test scripts

Q1. Mostly in automotive android
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Q2. What is car propertymanager and mostly in to aosp
Ans. 
Car propertymanager is a component in AOSP that manages properties related to car-specific features.
• Car propertymanager is used to handle properties like car make, model, year, etc.

• It is mostly used in Android Automotive OS for managing car-specific settings and configurations.

• Developers can use car propertymanager to access and modify car-related properties in their apps.
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Q1. Software skills assessment
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Q1. More than technical it was soft skills assessment
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Q1. Questions related to basics of Kotlin
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Q2. Questions related to basics of Android
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Q1. Salary negotiation
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Q1. Oops based question
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Q2. Solid principles and how to implement
Ans. 
Solid principles are a set of five design principles for writing maintainable and scalable code.
• Single Responsibility Principle: A class should have only one reason to change.

• Open/Closed Principle: Classes should be open for extension but closed for modification.

• Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.

• Interfa...read more
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Tata using network layer

Q1. Questions on MVVM, LiveData and Kotlin
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Q1. Andriod concets, Livedata, viewModal, Corotines, Kotlin & Java concepts
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Q1. 1. Why are you choosing this company? 2. If there is high package job & high knowledge job, which one you will choose? 3. Where do you see yourself in 5 years?
Ans. 
I am choosing this company because of its strong reputation, innovative projects, and great work culture.
• Strong reputation: The company has a proven track record of success and is highly regarded in the industry.

• Innovative projects: The company is known for its cutting-edge technology and exciting projects, which will provide me with opportunities to learn and grow.

• Great work culture: The company values its employees a...read more
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Q1. Jetpack components, kotlin basics, java program, fragment life cycle Inner class
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Q1. More about project Challenge in project About git
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Created an app which take data from API service and show in a list using jetpack compose