Crayon'd Android Developer Interview Questions and Answers

Q1. Threading kotlin
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Q2. Play services security
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Q1. Basic android questions
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Q2. Services mvvm roomdb and all basic android things
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Q1. Android: SOLID, Room dB, Jetpack component Kotlin : advantages, elvis operator, inline/higher order function, DSA- array, list
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Q1. Java basics OOPS, Hashmaps, DSA problem, Android basics
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Q1. Overall journey , goals
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Q1. Recent projects
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Developed a mobile application for tracking daily water intake and hydration levels.
• Implemented user-friendly interface for inputting water intake

• Integrated notifications for reminding users to drink water

• Utilized database to store and track hydration data
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Q2. Technologies worked with
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Experienced with technologies such as Java, Swift, React Native, and Firebase for mobile app development.
• Java

• Swift

• React Native

• Firebase
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Q3. Analytics tools used
Ans. 
Google Analytics, Firebase Analytics, Mixpanel
• Google Analytics for tracking user behavior

• Firebase Analytics for app performance monitoring

• Mixpanel for in-depth user analytics
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Q4. Error monitoring tools and sentry related
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Q5. Redux vs local storage
Ans. 
Redux is a state management library for JavaScript applications, while local storage is a browser feature for storing data locally.
• Redux is used for managing the global state of an application, making it easier to access and update data across components.

• Local storage is used for storing data locally on the user's device, allowing for persistent data even after the browser is closed.

• Redux is typically used for more com...read more
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Q6. Caching in react native
Ans. 
Caching in React Native allows for storing data locally to improve app performance and reduce network requests.
• Use AsyncStorage for simple key-value pair caching in React Native.

• Implement caching strategies like cache expiration or cache invalidation to manage cached data effectively.

• Consider using libraries like redux-persist for more advanced caching capabilities in React Native.
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Complex Question are there like images patter and we have to predict next image

There are two task for coding. both are easy.

Q1. Oops , programming, collection, java basic and Kotlin basic
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Q1. Japanese reading and introduce
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Q2. Kanji reading and meaning
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Kanji is a system of Japanese writing using Chinese characters. Each character has a reading and meaning.
• Kanji characters are used in combination with hiragana and katakana to write Japanese.

• There are over 2,000 commonly used kanji characters.

• Each kanji character has at least one reading and one meaning, but some have multiple readings and meanings.

• For example, the kanji character for 'tree' can be read as 'ki' or 'mok
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Q1. What is static in Java?
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Q2. What is singleton?
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Q3. What is Coroutines?
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Q4. What is dispatcher?
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Q5. What is with context in Coroutines?
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Q6. How to raise request parallel in Coroutines?
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Q7. Scoped functions in Kotlin.
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Q8. Background task in Android.
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Q9. What is the difference between interface and abstract class in Java?
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Q10. What is let function?
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