QUESTION: 85

Method onDraw() of class android.view.View has the following signature:

public void onDraw(Color)
public void onDraw(Canvas)
public boolean onDraw(Canvas)
public Canvas onDraw()

Answer(s): B

Explanation:

The parameter to onDraw() is a Canvas object that the view can use to draw itself.

Reference:

http://developer.android.com/training/custom-views/custom-drawing.html

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QUESTION: 86

To add a new Activity to your application, you need to perform the following steps:

Create a Java class that extends View, set a layout, and add an Activity tag in AndroidManifest.xml
Create layout resource only.
Create a Java class that extends Activity, add an Activity tag in AndroidManifest.xml, and create a layout for the activity.
Add an Activity tag to AndroidManifest.xml, and add ACTIVITY permission.

Answer(s): C

Reference:

http://www.itcsolutions.eu/2011/08/31/android-tutorial-how-to-create-a-new-activity-class-with-manifest-editor/

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QUESTION: 87

To create a customized Adapter for a compound list item layout, you should:

Extend class android.widget.Adapter or any of its descendants then override method getView()
Extend class android.widget.ListView or any of its descendants, then override method getView()
Extend class android.widget.AbsAdapter or any of its descendants, then override method getView()
Extend class android.widget.Adapter or any of its descendants, then override method getAdapterView().

Answer(s): A

Explanation:

The android.widget.Adapter class included the method getView(), which gets a View that displays the data at the specified position in the data set.

Reference:

http://developer.android.com/reference/android/widget/Adapter.html

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QUESTION: 88

When publishing an update to your application to the market, the following must be taken into consideration:

The package name must be the same, but the .apk may be signed with a different private key.
The package name does not have to be the same and the .apk can be signed with a different private key.
The package name must be the same and the .apk must be signed with the same private key.
The package name does not have to be the same, but the .apk must be signed with the same private key.

Answer(s): C

Explanation:

You should sign all of your apps with the same certificate throughout the expected lifespan of your applications.
App upgrade: When the system is installing an update to an app, it compares the certificate(s) in the new version with those in the existing version. The system allows the update if the certificates match. If you sign the new version with a different certificate, you must assign a different package name to the application — in this case, the user installs the new version as a completely new application.

Reference:

http://developer.android.com/tools/publishing/app-signing.html

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Free AND-401 Exam Braindumps (page: 22)

QUESTION: 85

Explanation:

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QUESTION: 86

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QUESTION: 87

Explanation:

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QUESTION: 88

Explanation:

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