Falabella Senior Android Developer Interview Questions, Process, and Tips

Hackerrank coding test, depending on domain. Around 15 MCQ and two coding questions.

Q1. What is activity vs fragment
Ans. 
Activity is a single screen with a user interface, while Fragment is a modular section of an activity.
• Activity represents a single screen with a user interface.

• Fragment is a modular section of an activity that can be combined with other fragments to create a multi-pane UI.

• Activities are used to handle user interactions and manage the lifecycle of an app.

• Fragments are reusable components that can be added or removed fro...read more
Answered by AI
Add your answer
Q2. What are coroutines, how do they work internally
Ans. 
Coroutines are a concurrency design pattern in Kotlin that allow for asynchronous programming.
• Coroutines are lightweight threads that can be used to perform non-blocking operations.

• They are based on the concept of suspending functions, which can be paused and resumed.

• Coroutines use a dispatcher to determine which thread or thread pool to run on.

• They can be used to simplify asynchronous code and avoid callback hell.

• Coro...read more
Answered by AI
Add your answer
Q3. What is suspend function
Ans. 
A suspend function is a function that can be paused and resumed later without blocking the main thread.
• Suspend functions are used in Kotlin coroutines to perform asynchronous operations.

• They are defined using the 'suspend' keyword.

• Suspend functions can only be called from other suspend functions or from coroutine scopes.

• They can be used to perform network requests, database operations, or any other long-running tasks w...read more
Answered by AI
Add your answer

Q1. RxJava vs coroutines
Ans. 
RxJava is a library for composing asynchronous and event-based programs using observable sequences. Coroutines are a new way of writing asynchronous code in a sequential manner.
• RxJava is based on the Observer pattern and uses operators to transform and combine observable sequences.

• Coroutines are lightweight threads that can be suspended and resumed, allowing for sequential and structured concurrency.

• RxJava is widely us...read more
Answered by AI
Add your answer
Q2. Fragment lifecycle
Add your answer

Q1. How will you handle prod defects
Ans. 
Prod defects are handled by identifying, prioritizing, and resolving them in a systematic manner.
• Create a process for reporting and tracking defects

• Prioritize defects based on impact and severity

• Assign resources to investigate and fix defects

• Perform root cause analysis to identify the underlying issues

• Implement fixes and thoroughly test them before deploying

• Communicate with stakeholders about the status and resolution
Answered by AI
Add your answer