AND-401 Certification Exam Questions with AI Explanations

QUESTION: 41

Which of the following classes is used by Intent to transfer data between different android components?

Extras
Bundle
Parcelables
PendingIntent

Answer(s): B

Explanation:

Bundle is generally used for passing data between various activities of android. It depends on you what type of values you want to pass, but bundle can hold all types of values, and pass to the new activity.

Reference:

http://stackoverflow.com/questions/4999991/what-is-a-bundle-in-an-android-application

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QUESTION: 42

Which of the following is true about implicit intents? (Choose two)

They do not have a component specified
They have components specified to run an exact class.
They must include information that allows Android system to choose the best component to run.
They must contain extra information saved in a Bundle object.

Answer(s): A,C

Explanation:

Implicit intents do not name a specific component, but instead declare a general action to perform, which allows a component from another app to handle it.

Reference:

http://developer.android.com/guide/components/intents-filters.html

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QUESTION: 43

Which of the following classes should be extended to create a custom view?

View
ViewGroup
Context
Activity

Answer(s): A

Explanation:

All of the view classes defined in the Android framework extend View. Your custom view can also extend View directly, or you can save time by extending one of the existing view subclasses, such as Button.

Reference:

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

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QUESTION: 44

An AsyncTask can be cancelled anytime from any thread.

True
False

Answer(s): A

Explanation:

A task can be cancelled at any time by invoking cancel(boolean).

Reference:

http://developer.android.com/reference/android/os/AsyncTask.html

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QUESTION: 45

Which of the following is NOT true about onMeasure() method of class View?

It measures the view and its contents to determine the measured width and height.
It is invoked by measure().
When overriding this method, a developer must call setMeasuredDimension().
It takes three parameters: the height, width, and the depth of the view.

Answer(s): D

Explanation:

Syntax: protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec)
onMeasure() measures the view and its content to determine the measured width and the measured height. This method is invoked by measure(int, int) and should be overridden by subclasses to provide accurate and efficient measurement of their contents.

Reference:

http://developer.android.com/reference/android/view/View.html#onMeasure(int, int)

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Android Application Development AND-401 Dumps in PDF

Free Android AND-401 Real Questions (page: 34)

QUESTION: 41

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QUESTION: 42

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QUESTION: 43

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QUESTION: 44

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QUESTION: 45

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