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Free AND-401 Exam Braindumps (page: 14)

Page 13 of 58
PDF with 228 Questions

What does the following code do?
dialog.getWindow().setFlags(LayoutParams.FLAG_BLUR_BEHIND,
LayoutParams.FLAG_BLUR_BEHIND);

  1. When dialog is displayed the activity behind it will be blurred.
  2. When dialog is displayed the activity behind it will be dimmed.
  3. Any EditText behind the dialog will be disabled.
  4. When the dialog is displayed, the edges of the dialog will be blurred.

Answer(s): A

Explanation:

public static final int FLAG_BLUR_BEHIND
Window flag: blur everything behind this window.
Note: Added in API level 1
This constant was deprecated in API level 14.
Blurring is no longer supported.


Reference:

http://developer.android.com/reference/android/view/WindowManager.LayoutParams.html#FLAG_BLUR_BEHIND



What does the following code achieve?
Intent intent = new Intent(FirstActivity.this, SecondActivity.class); startActivityForResult(intent);

  1. Starts a browser activity
  2. Starts a sub-activity
  3. Starts an activity service
  4. Sends results to another activity.

Answer(s): B

Explanation:

startActivityForResult launches an activity for which you would like a result when it finished.


Reference:

http://developer.android.com/reference/android/app/Activity.html



When using an implicit intent, what process does the system use to know what to do with it?

  1. Intent resolution
  2. Intent declaration
  3. Intent overloading
  4. Intent transition

Answer(s): A

Explanation:

When using implicit intents, given such an arbitrary intent we need to know what to do with it. This is handled by the process of Intent resolution, which maps an Intent to an Activity, BroadcastReceiver, or Service (or sometimes two or more activities/receivers) that can handle it.
The intent resolution mechanism basically revolves around matching an Intent against all of the <intent-filter> descriptions in the installed application packages.


Reference:

http://developer.android.com/reference/android/content/Intent.html



Which of the following is NOT true about the MenuItem interface?

  1. The MenuItem instance will be returned by the Menu class add(...) method.
  2. MenuItem can decide the Intent issued when clicking menu components.
  3. MenuItem can display either an icon or text.
  4. MenuItem can set a checkbox.

Answer(s): C

Explanation:

Both an icon and text can be displayed.
The <item> element supports several attributes you can use to define an item's appearance and behavior. The items in the above menu include the following attributes:
android:id
A resource ID that's unique to the item, which allows the application to recognize the item when the user selects it.
android:icon
A reference to a drawable to use as the item's icon.
android:title
A reference to a string to use as the item's title.
Incorrect:
B: Adding Menu Items Based on an Intent
Sometimes you'll want a menu item to launch an activity using an Intent (whether it's an activity in your application or another application). When you know the intent you want to use and have a specific menu item that should initiate the intent, you can execute the intent with startActivity() during the appropriate on-itemselected callback method (such as the onOptionsItemSelected() callback).
However, if you are not certain that the user's device contains an application that handles the intent, then adding a menu item that invokes it can result in a non-functioning menu item, because the intent might not resolve to an activity. To solve this, Android lets you dynamically add menu items to your menu when Android finds activities on the device that handle your intent.


Reference:

http://developer.android.com/guide/topics/ui/menus.html






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