Android MCQs (Chapterwise Multiple Choice Questions)

To preserve on-device memory, how might you determine that the user's device has limited storage capabilities?

Use the ActivityManager.isLowRamDevice() method to find out whether a device defines itself as "low RAM."

Use the Activity.islowRam() method to find out whether a device defines itself as "low RAM."

Use the ConnectivityManager.hasLowMemory() method to find out whether a device defines itself as "low RAM."

Make an image download request and check the remaining device storage usage.

Answer & Explanation

Correct Answer: Use the ActivityManager.isLowRamDevice() method to find out whether a device defines itself as "low RAM."

Note: This Question is unanswered, help us to find answer for this one

Which XML attribute should be used to make an Image View accessible?

Android:talkBack

Android:labelFor

Android:hint

Android:contentDescription

Answer & Explanation

Correct Answer: Android:contentDescription

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Which source set is _not_ available to you by default when Android Studio creates a new project?

Test

AndroidTest

App

Main

Answer & Explanation

Correct Answer: Main

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What allows you to properly restore a user's state when an activity is restarted?

The onSaveInstance()method

All of these answers

Persistent storage

ViewModel objects

Answer & Explanation

Correct Answer: All of these answers

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The Android system kills process when it needs to free up memory. The likelihood of the system killing a given process depends on the state of the process and the activity at the time. With combination of process and activity state is most likely to be killed?

Process:In the background;Activity:Is stopped

Process:In the background;Activity:Is paused

Process:In the foreground;Activity:Is started

Process:In the foreground;Activity:Is paused

Answer & Explanation

Correct Answer: Process:In the background;Activity:Is stopped

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You want to include about and setting modules in your project. Which files accurately reflects their inclusion?

In build.gradle:include ':app',':about' ':settings'

In settings.gradle:include ':app',':about' ':settings'

In settings.gradle:include ':about',':settings'

In gradle.properties:include ':app',':about' ':settings'

Answer & Explanation

Correct Answer: In settings.gradle:include ':app',':about' ':settings'

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You need to get a list of devices that are attached to your computer with USB debugging enable. Which command would execute using the Android Debug Bridge?

List devices

Adb devices

List avd

Dir devices

Answer & Explanation

Correct Answer: Adb devices

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Given the test class below, which code snippet would be a correct assertion?

AssertThat(resultAdd).is(2.0)

AssertNotNull(resultAdd)

AssertThat(resultAdd).isWqualTo(2.0)

AssertThat(resultAdd)

Answer & Explanation

Correct Answer: AssertNotNull(resultAdd)

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What is not a benefit of externalizing app resources such as image and string from a code?

It allows Android to choose the appropriate resource based on the current configuration during runtime.

It allows you to have more performant applications because the code and resources are separated.

It allows you to provide a different Ul experience based on the user's language settings.

It allows you to provide a different Ul experience based on the user's device size.

Answer & Explanation

Correct Answer: It allows you to have more performant applications because the code and resources are separated.

Note: This Question is unanswered, help us to find answer for this one

When would you use the ActivityCompat.shouldShowRequestPermissionRationale() function?

When a user first opens your app and you want to provide an explanation for the use of a given permission

When a user has previously denied the request for a given permission and selects "Tell me more"

When a user has previously denied the request for a given permission and you want to provide an explanation for its use

when a user has previously denied the request for a given permission and selected "Don't ask again," but you need the permission for your app to function

Answer & Explanation

Correct Answer: when a user has previously denied the request for a given permission and selected "Don't ask again," but you need the permission for your app to function

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Android Quick Quiz

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