HCL Group Android App Developer Interview Questions and Answers

Aptitude questions(seating arrangement,number series),verbal reasoning, Networking,Cloud based questions,and pseudocode

2 coding questions,one will be easy, other will be tough,solving atleast one problem is necessary.

Q1. Read the given sentence
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Q2. Hear and answer the question
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Q1. Tell me about yourself
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Q2. About college project(as I am fresher) ,about internship, difficulties faced and how we solved it
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Q1. Explain MVVM in detail
Ans. 
MVVM is a design pattern that separates UI code from business logic and data handling.
• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View displays the UI and user interactions

• ViewModel acts as a mediator between Model and View

• ViewModel exposes data and commands to the View

• Data binding is used to keep the View and ViewModel in sync

• MVVM promotes testability and maintainability of code
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Q2. Kotlin sealed class, data class, scope functions
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Q3. Core Java basic questions
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Q1. Detail discussion on design patterns
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Q2. Basic kotlin or java programming
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Q1. Details about notice period and salary
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Q1. 1. Kotlin 2. co- routine 3. one coding program 4. mvvm 5. basic Android question
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Q1. Java basic interview question coroutine ,kotlin question what is abstract class ? what is singleton class? mvvm design pattern
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Flutter dart language

Flutter ui design and programming

Q1. How many years experience in your field
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Q2. Pass experience
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Q1. Technical questions for dart
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Q1. Android Basics on mvvm architecture
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Q2. Navigation Component
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Q3. Jetpack components- work manager, viewmodel
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Q1. Managerial questions
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Q1. Lifecycle of an activity
Ans. 
The lifecycle of an activity in Android refers to the different states an activity goes through during its lifetime.
• onCreate() method is called when the activity is first created

• onStart() method is called when the activity becomes visible to the user

• onResume() method is called when the activity starts interacting with the user

• onPause() method is called when the activity is partially obscured

• onStop() method is called wh...read more
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Q2. Lifecycle of a fragment
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Fragment lifecycle includes onAttach, onCreate, onCreateView, onStart, onResume, onPause, onStop, onDestroyView, onDestroy, onDetach.
• onAttach() - fragment is associated with an activity

• onCreate() - initialize essential components

• onCreateView() - create the fragment's view hierarchy

• onStart() - fragment becomes visible

• onResume() - fragment is interacting with the user

• onPause() - fragment is partially visible

• onStop() - fr...read more
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Q1. Explain Activity lifecycle
Ans. 
Activity lifecycle refers to the series of states an activity goes through during its lifetime in an Android app.
• Activity is created with onCreate() method

• Activity is started with onStart() method

• Activity is resumed with onResume() method

• Activity is paused with onPause() method

• Activity is stopped with onStop() method

• Activity is destroyed with onDestroy() method
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Q2. What is databinding
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Data binding is a technique in software development that establishes a connection between the UI components and the data sources.
• Data binding allows for automatic synchronization of data between the UI and data sources.

• It reduces boilerplate code by eliminating the need for manual updates to the UI when data changes.

• Data binding can be implemented using frameworks like Android Data Binding Library.
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