Mobile Application Development questions Match the component type to the example
ID: 3911439 • Letter: M
Question
Mobile Application Development questions
Match the component type to the example of that component type.
A Tip Calculator
Where’s My App, which waits for a text message to be received and responds with the device’s location
A background music player, which runs while the user interacts with other activities
The Contacts app, which makes the user’s contact list available to other apps
Activity
Regular App
Broadcast Receiver
Broadcast Sender
Content Receiver
Content Provider
Services
QUESTION 22
The Timer class method schedule uses which of the following units for its delay value?
Hours
Minutes
Seconds
Milliseconds
QUESTION 23
What interface is included in the following code?
public class DotSmasherCanvas extends View implements OnTouchListener {
int dotX, dotY, score;
//Other code here
}
class DotSmasherCanvas
class View
class OnTouchListener
class int
QUESTION 24
How do you tag objects for garbage collection?
Pass the object reference to a built-in garbage collection method.
Set the object references to null.
Both A and B
Neither A nor B
QUESTION 25
Class instance variables must be declared at the beginning of the class definition.
True
False
2 points
QUESTION 26
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
QUESTION 27
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
- A. B. C. D. E. F. G.A Tip Calculator
- A. B. C. D. E. F. G.Where’s My App, which waits for a text message to be received and responds with the device’s location
- A. B. C. D. E. F. G.A background music player, which runs while the user interacts with other activities
- A. B. C. D. E. F. G.The Contacts app, which makes the user’s contact list available to other apps
A.Activity
B.Regular App
C.Broadcast Receiver
D.Broadcast Sender
E.Content Receiver
F.Content Provider
G.Services
Explanation / Answer
Please Note: You have posted more than one Question. I have answered the four questions. Please Post Separate for other Questions.
QUESTION 22
The Timer class method schedule uses which of the following units for its delay value?
Hours
Minutes
Seconds
Milliseconds
Answer)
In the Time class method the schedule uses
-Milliseconds-
for its delay value.
delay value is always calculated in milliseconds.
QUESTION 23
What interface is included in the following code?
public class DotSmasherCanvas extends View implements OnTouchListener {
int dotX, dotY, score;
//Other code here
}
class DotSmasherCanvas
class View
class OnTouchListener
class int
Answer)
OnTouchListener is the interface which is included in the following code.
implements OnTouchListener is the statement where it implements the interface OnTouchListener.
QUESTION 24
How do you tag objects for garbage collection?
Pass the object reference to a built-in garbage collection method.
Set the object references to null.
Both A and B
Neither A nor B
Answer)
Tag objects for garbage collection by;
Set the object references to null.
We nullify the object reference to make it eligible for garbage collection.
QUESTION 25
Class instance variables must be declared at the beginning of the class definition.
True
False
Answer)
False
Instance variables can be declared anywhere at class level in the class definition of the object.