Android Concepts

What is the role of Android OS in a mobile device?

• Provides weather updates

• Sends text messages

• Manages hardware and software, provides user interface, enables communication between components.

• Plays music

Name the four main components of an Android app.

• Activities, Services, Broadcast Receivers, Content Providers

• Views

• Fragments

• Intents

Explain the purpose of Activities in Android app development.

• Activities are used for storing data in Android apps.

• Activities are responsible for handling network requests in Android apps.

• Activities are used for managing background tasks in Android apps.

• Activities in Android app development provide a user interface for users to interact with the app.

What is the function of Services in Android architecture?

• Services in Android architecture handle background operations and long-running tasks.

• Services in Android architecture are used for displaying user interfaces.

• Services in Android architecture are designed to handle user input interactions.

• Services in Android architecture are responsible for managing device hardware components.

Describe the role of Broadcast Receivers in Android apps.

• Broadcast Receivers in Android apps are components that respond to system-wide broadcast announcements.

• Broadcast Receivers are used to handle touch events in Android apps.

• Broadcast Receivers are responsible for managing user authentication in Android apps.

• Broadcast Receivers are used to display ads in Android apps.

What are Content Providers and how are they used in Android?

• Content Providers are used to customize the appearance of Android app interfaces.

• Content Providers in Android are used to manage access to a structured set of data and share data between different applications.

• Content Providers are used to play media files in Android apps.

• Content Providers are used for displaying ads in Android apps.

Explain the difference between View and ViewGroup in Android UI design.

• A ViewGroup is a single UI element.

• View and ViewGroup are interchangeable terms in Android UI design.

• A View is a single UI element, while a ViewGroup is a container that can hold multiple Views.

• A View is a container that can hold multiple Views.

What is the purpose of the Android Manifest file?

• It provides essential information about the app to the Android system.

• It manages the app's network connection

• It controls the layout of the app

• It stores user data for the app

Discuss the importance of Intents in Android app communication.

• Intents are only used for UI design in Android apps.

• Intents are not necessary for Android app development.

• Intents are primarily used for storing data in Android apps.

• Intents are crucial for enabling communication between different components of an Android app and facilitating data exchange and action triggering.

Name the four layers of Android architecture and briefly explain each.

• Kernel, Middleware, Android Runtime, User Interface

• Linux Kernel, Middleware, Android Runtime, Application Framework

• Linux Kernel, Libraries, Android Runtime, Application Framework

• Hardware, Libraries, Android Runtime, Application Framework