S & V Co Android Developer Interview Questions and Answers

The first round consisted of a coding exercise along with fundamental questions related to React Native, JavaScript, and inquiries about objects and arrays.

Q1. Native modules, useRef, Flatlist
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Q1. Javascript basics
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Q1. React native basics
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Q2. Scroll vs flatlist
Ans. 
FlatList is more efficient for rendering large lists with better performance compared to ScrollView.
• FlatList is optimized for rendering long lists by only rendering the items that are currently visible on the screen.

• ScrollView renders all of its children at once, which can lead to performance issues with large lists.

• FlatList also provides built-in support for pull-to-refresh, infinite scrolling, and item separators.

• Scr...read more
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Q3. Design carousel in react native
Ans. 
Designing a carousel in React Native involves creating a horizontal scroll view with swipe functionality.
• Use ScrollView component with horizontal prop to create the carousel layout.

• Render multiple items inside the ScrollView to display carousel content.

• Implement swipe gestures to navigate between carousel items.

• Consider using libraries like 'react-native-snap-carousel' for additional features and customization.
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Q1. Android basics and life cycle
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Q2. Services and AIDL
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Q1. Design patterns and use cases
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Q1. Reason foe change current company
Ans. 
Seeking new challenges and growth opportunities in a more innovative environment.
• Desire for professional growth

• Seeking new challenges

• Looking for a more innovative environment
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Q1. Basics of JavaScript
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It was given over a phone call and the case study was to identify pluggable devices on wifi and verify them if they can be communicatable. If yes, then we have to draw a flowchart and explain end to end connectivity.