Android Operating System History Quiz
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Questions and Answers

What is the primary aim of the Android version 4.1 Jelly Bean update?

  • Increasing battery life
  • Enhancing security features
  • Expanding app compatibility
  • Improving user interface functionality and performance (correct)
  • Which organization led the Open Handset Alliance in developing Android?

  • Google (correct)
  • Microsoft
  • Samsung
  • Apple
  • Which directory in the anatomy of an Android application contains XML files with resources like strings and color definitions?

  • AndroidManifest.xml
  • res/layout
  • res/values (correct)
  • res/drawable-hdpi
  • When was the commercial version of Android first released?

    <p>2008</p> Signup and view all the answers

    What type of screens are the drawable objects in the 'res/drawable-hdpi' directory designed for?

    <p>High-density screens</p> Signup and view all the answers

    Which company announced the Android version 4.1 Jelly Bean in 2012?

    <p>Google</p> Signup and view all the answers

    What is the purpose of the manifest.xml file in an Android application project?

    <p>To specify the application's components to the Android OS</p> Signup and view all the answers

    What does the 'onCreate()' method in Android development signify?

    <p>It is triggered when an activity is loaded</p> Signup and view all the answers

    Where should the application icon be stored in an Android project?

    <p>res/drawable-hdpi folder</p> Signup and view all the answers

    What role does R.layout.activity_main play in Android development?

    <p>It refers to the activity_main.xml layout file</p> Signup and view all the answers

    What attribute determines the class name of an Activity subclass in Android's tag?

    <p>android:name</p> Signup and view all the answers

    Why is it important to declare all components of an Android app in the manifest.xml file?

    <p>To ensure that all components are recognized by the Android OS</p> Signup and view all the answers

    What is the purpose of using android.intent.action.MAIN in the manifest file?

    <p>To define the activity as the entry point for the application</p> Signup and view all the answers

    Why is android.intent.category.LAUNCHER used in the intent-filter?

    <p>To indicate that the application can be launched from the device's launcher icon</p> Signup and view all the answers

    What does @string/app_name refer to in the text?

    <p>A string defined in the strings.xml file named app_name</p> Signup and view all the answers

    In which directory is the strings.xml file typically located?

    <p>res/values</p> Signup and view all the answers

    What is the purpose of activity_main.xml in Android development?

    <p>To define layouts for application components</p> Signup and view all the answers

    Which Android control mentioned in the text is used to build the GUI?

    <p>TextView</p> Signup and view all the answers

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