Exploring Android Fundamentals

What are the main components of Android architecture?

• Database Management System

• Network Communication Module

• User Interface Layer

• Linux Kernel, Hardware Abstraction Layer (HAL), Android Runtime (ART), Application Framework

Explain the role of the Android Manifest file.

• It stores the app's user interface layout.

• The Android Manifest file declares the app's components, permissions, entry point, and metadata.

• It contains the app's source code files.

• It manages the app's database connections.

What is the purpose of Activities in Android?

• To manage network connections in Android

• To handle background tasks in Android

• The purpose of Activities in Android is to provide a screen for user interaction and manage the app's user interface.

• To store data persistently in Android

Describe the difference between Fragments and Activities.

• Fragments are modular UI components used within Activities, which represent a single screen in an Android application.

• Fragments cannot be reused across different Activities.

• Fragments are standalone applications that do not require Activities.

• Activities are used to manage background tasks in Android applications.

What is a View in Android UI components?

• A View is a class for handling background tasks.

• A View is a method for managing network connections.

• A View is a type of database in Android.

• A View in Android UI components is a basic building block that represents a rectangular area on the screen for drawing and handling events.

How do you create a responsive layout in Android?

• Use ConstraintLayout, different resource folders, and flexible view attributes.

• Avoid using any resource folders for different screen sizes.

• Only use fixed dimensions for all views.

• Use LinearLayout exclusively for all screens.

What is Retrofit and how is it used in Android networking?

• Retrofit is a database management system for Android.

• Retrofit is a graphics rendering library for Android.

• Retrofit is a type-safe HTTP client for Android that simplifies networking by converting API responses into Java objects.

• Retrofit is a file storage solution for Android applications.

Explain the concept of AsyncTask in Android.

• AsyncTask is used for managing database connections in Android.

• AsyncTask is a library for handling network requests in Android.

• AsyncTask is a class in Android for performing background operations and updating the UI thread.

• AsyncTask is a method for creating animations in Android applications.

What is the purpose of the Intent class in Android?

• The Intent class handles network requests in Android.

• The Intent class is used for inter-component communication in Android.

• The Intent class is responsible for UI design in Android.

• The Intent class is used for database management in Android.

How do you handle network requests in Android applications?

• Use AsyncTask for all network operations.

• Use libraries like Retrofit or Volley for making network requests.

• Make network requests directly in the UI thread.

• Use only HttpURLConnection without any libraries.