Activities and Intents in Android Development
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Questions and Answers

When is the onPause() method called?

  • When a new page appears
  • When the activity starts interacting with the user
  • When the activity becomes visible to the user
  • When the activity is killed because of pressing the back button (correct)

    • What is the purpose of the onRestart() method?

  • To free up resources before the activity is destroyed
  • To restart the activity that has been stopped (correct)
  • To start any background services
  • To initiate the 'visible' lifespan of the application

    • Which method is called when the activity is no longer visible to the user?

  • onResume()
  • onStart()
  • onStop() (correct)
  • onDestroy()

    • What does onDestroy() method help in doing before an activity is destroyed?

    <p>Free up resources before destruction</p> Signup and view all the answers

    Why is onRestart() called before onStart() when transitioning from onStop to onStart?

    <p>To restart an already stopped activity</p> Signup and view all the answers

    Which method is responsible for stopping any services/threads that are running when the activity is not in the foreground?

    <p>onPause()</p> Signup and view all the answers

    What is the main purpose of an activity in Android applications?

    <p>To interact with the user through the user interface</p> Signup and view all the answers

    Which method is called when an activity is first created?

    <p>onCreate()</p> Signup and view all the answers

    What is the function of setContentView(R.layout.home_layout); in Android activities?

    <p>To load UI components from a defined XML file</p> Signup and view all the answers

    In AndroidManifest.xml, why must every activity in the application be declared?

    <p>To declare the activities to the system</p> Signup and view all the answers

    Which method is invoked when the user presses the Back button to destroy the current activity?

    <p>onDestroy()</p> Signup and view all the answers

    What does the onResume() method signify in the activity life cycle?

    <p>The activity is becoming visible to the user</p> Signup and view all the answers

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