Question

QUESTION 21

1. In the following onOptionsItemSelected() method, which id is most likely associated with accessing the application’s help page?
   
   public boolean onOptionsItemSelected(MenuItem item) {
      switch (item.getItemId()) {
         case R.id.item1:
           new();
           return true;
         case R.id.item2:
           open();
           return true;
         case R.id.item3:
           close();
           return true;
         case R.id.item4:
           info();
           return true;
         default:
           return super.onOptionsItemSelected(item);
      }
   }

   		item1
   		item2
   		item4
   		none, it will be handled by the default case

2 points   

QUESTION 22

1. In the following onOptionsItemSelected() method, which id is most likely associated with starting a new session?
   
   public boolean onOptionsItemSelected(MenuItem item) {
      switch (item.getItemId()) {
         case R.id.item1:
           new();
           return true;
         case R.id.item2:
           open();
           return true;
         case R.id.item3:
           close();
           return true;
         case R.id.item4:
           info();
           return true;
         default:
           return super.onOptionsItemSelected(item);
      }
   }

   		item1
   		item2
   		item4
   		none, it will be handled by the default case

2 points   

QUESTION 23

1. Which of the following components does the Where’s My Phone? app use while waiting for a text message in the background?

   		Activities
   		Services
   		Broadcast Receivers
   		Content Providers

2 points   

QUESTION 24

1. What is the text displayed on the canvas after the execution of the following code?
   
   0 super.onDraw(canvas);
   1 Paint dotPaint = new Paint();
   2 dotPaint.setColor(Color.RED);
   3 canvas.drawRect(dotX, dotY, dotX + 20, dotY + 20,      
               dotPaint);
   4 a = 1;
   5 b = 2;
   6 a = b;
   7 b = a;
   8 canvas.drawText(“a: “+a+“| b: “+b, 20, 20, dotPaint);

   		a: 1|b: 1
   		a: 2|b: 1
   		a: 1|b: 2
   		a: 2|b: 2

2 points   

QUESTION 25

1. Which is the correct definition of the term refactoring?

   		Reducing a trinomial to a set of binomials
   		Rewriting code to make it better without changing its behavior
   		Rewriting code to add forgotten functionality or to remove unnecessary functionality
   		Rewriting code to fix broken functionality

2 points   

QUESTION 26

1. What does XML stand for?

   		Extendable Markup Language
   		Extensible Markup Language
   		Extended Markup Language
   		Extra Markup Language

2 points   

QUESTION 27

1. Which of following is the correct term for a piece of information used to activate an Activity, Service, or Broadcast Receiver?

   		Intent
   		IntentFilter
   		Content Provider
   		Bundle

2 points   

QUESTION 28

1. Provided you know the namespace and attribute information, it is easier to manually code the menu’s XML code than it is to use the IDE to generate the menu’s XML code.

   True

   False

2 points   

QUESTION 29

1. One feature of the Eclipse editor is showing or hiding blocks of code, which makes it easier to scroll through source code. Which of the following is the correct name for this in Eclipse?

   		Code folding
   		Section hiding
   		Expand/Collapse
   		Open/close

2 points   

QUESTION 30

1. Which interface should be used to handle the button press event?

   		OnPressListener
   		OnClickListener
   		pressListener
   		clickListener

Answer 1

21.

In the given onOptionsItemSelected() method , item4 is most likely to be associated with accessing the application’s help page because it executes a function called info() which is most likely to open a page to provide information about the application, which should be the help page of the application.

22.

In the given onOptionsItemSelected() method , item1 is most likely to be associated with starting a new session because it executes a function called new() which is most likely to open a new a session.

23.

Where’s My Phone? app uses Broadcast Receivers while waiting for a text message in the background. An broadcast receiver is an Android component which allows us to register for system or application events. so the app can use Broadcast receiver to listen for incoming message in the background.

24.

0 super.onDraw(canvas);
1 Paint dotPaint = new Paint();
2 dotPaint.setColor(Color.RED);
3 canvas.drawRect(dotX, dotY, dotX + 20, dotY + 20,      
            dotPaint); // draw a rectangle
4 a = 1; // set a=1
5 b = 2; // set b=2
6 a = b; // a=b = 2
7 b = a; // b=a=2
8 canvas.drawText(“a: “+a+“| b: “+b, 20, 20, dotPaint); // a=2 | b=2

a: 2|b: 2 will be displayed on the canvas after the execution of the above code

25.

Refactoring means rewriting code to make it better without changing its behavior. Refactoring means altering the structure of a program without impacting its functionality.

26.

XML stands for Extensible Markup Language