Android Operating System Overview

What is the purpose of the build.gradle file?

To contain information such as compileSdkVersion, buildToolsVersion, applicationId, minSdkVersion, targetSdkVersion, versionCode, and versionName.

What does R.layout.activity_main refer to?

The activity_main.xml file located in the res/layout folder.

Why is the manifest.xml file important in Android development?

It declares all components of the application and acts as an interface between Android OS and the application.

What does the android:icon attribute in the manifest.xml file point to?

The application icon available under res/drawable-hdpi. Signup and view all the answers

What does the tag do in the manifest file?

Specifies an activity, with android:name indicating the class name and android:label providing the activity label. Signup and view all the answers

Which method is invoked when an activity is loaded?

onCreate() Signup and view all the answers

What is ANDROID?

An operating system for mobile devices like smartphones and tablets. Signup and view all the answers

When was the first beta version of ANDROID SDK released?

2007 Signup and view all the answers

Which version of Android was announced on June 27, 2012?

4.1 Jelly Bean Signup and view all the answers

What are some reasons for using ANDROID?

Open Source, Larger Developer and Community Reach, Increased Marketing, Inter-app Integration, Reduced cost of Development, Higher Success Ratio, Rich Development Environment Signup and view all the answers

What does the 'res/values' directory contain in an Android application?

Various XML files that contain a collection of resources, such as strings and colors definitions. Signup and view all the answers

What is the purpose of the 'AndroidManifest.xml' file?

To describe the fundamental characteristics of the app and define each of its components. Signup and view all the answers

What is the purpose of android.intent.action.MAIN?

To indicate that the activity serves as the entry point for the application. Signup and view all the answers

Explain the significance of android.intent.category.LAUNCHER.

It indicates that the application can be launched from the device's launcher icon. Signup and view all the answers

What does @string/app_name refer to in Android development?

The app_name string defined in the strings.xml file, which is 'HelloWorld'. Signup and view all the answers

What is the purpose of activity_main.xml in Android?

It is a layout file referenced by the application to build its interface. Signup and view all the answers

What is the TextView in Android used for?

To build the GUI (Graphical User Interface). Signup and view all the answers

Where is the strings.xml file typically located in an Android project?

In the res/values folder. Signup and view all the answers