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Google Developers Certification - Associate Android Developer (Kotlin and Java Exam) Questions and Answers

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Questions # 1:

The following code snippet shows an example of an Espresso test:

Options:

@Rule

public void greeterSaysHello() {

onView(withId(R.id.name_field)).do(typeText("Steve"));

onView(withId(R.id.greet_button)).do(click());

onView(withText("Hello Steve!")).check(matches(isDisplayed()));

}

@Test

public void greeterSaysHello() {

onView(withId(R.id.name_field)).perform(typeText("Steve"));

onView(withId(R.id.greet_button)).perform(click());

onView(withText("Hello Steve!")).check(matches(isDisplayed()));

}

@Test

public void greeterSaysHello() {

onView(withId(R.id.name_field)).do(typeText("Steve"));

onView(withId(R.id.greet_button)).do(click());

onView(withText("Hello Steve!")).compare(matches(isDisplayed()));

}

Answer

Questions # 2:

If you want get a debuggable APK that people can install without adb, in Android Studio you can:

Options:

Select your debug variant and click Build Bundle(s) / APK(s) > Build APK(s).

Click the Run button from toolbar

Select your debug variant and click Analyze APK.

Answer

Explanation

The Run button builds an APK with testOnly="true", which means the APK can only be installed via adb (which Android Studio uses). If you want a debuggable APK that people can install without adb, select your debug variant and click Build Bundle(s) / APK(s) > Build APK(s).

[Reference:, https://developer.android.com/studio/run, ]

Questions # 3:

If content in a PagedList updates, the PagedListAdapter object receives:

Options:

only one item from PagedList that contains the updated information.

one or more items from PagedList that contains the updated information.

a completely new PagedList that contains the updated information.

Answer

Explanation

[Reference:, https://developer.android.com/topic/libraries/architecture/paging/ui, ]

Questions # 4:

Custom duration in milliseconds as a parameter for the setDuration method is available when you are working with:

Options:

Toast

Snackbar

for none of them

for both of them

Answer

Explanation

[Reference: https://developer.android.com/guide/topics/ui/notifiers/toasts https://developer.android.com/training/snackbar/action, ]

Questions # 5:

“Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy.” This can be done by calling method:

Options:

findViewById

setContentView

setActionBar

setContentTransitionManager

setTheme

Answer

Explanation

[Reference: https://developer.android.com/training/basics/firstapp/building-ui https://developer.android.com/reference/android/app/Activity, ]

Questions # 6:

Content labels. What attribute to use to indicate that a View should act as a content label for another View?

Options:

android:contentDescription

android:hint

android:labelFor

Answer

Explanation

[Reference:, https://support.google.com/accessibility/android/answer/7158690?hl=en, ]

Questions # 7:

What method should we use with Notification.Builder to supply a PendingIntent to be sent when the notification is clicked?

Options:

setContentInfo

setContentIntent

setDeleteIntent

Answer

Explanation

[Reference:, https://developer.android.com/training/notify-user/build-notification, ]

Questions # 8:

Assume that an app includes a default set of graphics and two other sets of graphics, each optimized for a different device setup:

res/drawable/

Contains default graphics. res/drawable-small-land-stylus/

Contains graphics optimized for use with a device that expects input from a stylus and has a QVGA low- density screen in landscape orientation.

res/drawable-ja/

Contains graphics optimized for use with Japanese.

What happens if the app runs on a device that is configured to use Japanese and, at the same time, the device happens to be one that expects input from a stylus and has a QVGA low-density screen in landscape orientation?

Options:

Android loads graphics from res/drawable/

Android loads graphics from res/drawable-small-land-stylus/

Android loads graphics from res/drawable-ja/

Answer

Explanation

[Reference:, https://developer.android.com/guide/topics/resources/localization, ]

Questions # 9:

Assume that you have the following situation: The app code calls for R.string.text_a Three relevant resource files are available:

-res/values/strings.xml, which includes text_a in the app's default language, in this case English.

-res/values-mcc404/strings.xml, which includes text_a in the app's default language, in this case English.

-res/values-hi/strings.xml, which includes text_a in Hindi.

The app is running on a device that has the following configuration:

-The SIM card is connected to a mobile network in India (MCC 404).

-The language is set to Hindi (hi).

Which is the correct statement below?

Options:

Android loads text_a from res/values/strings.xml (in English)

Android loads text_a from res/values-mcc404/strings.xml (in English)

Android loads text_a from res/values-hi/strings.xml (in Hindi)

Answer

Explanation

Android loads text_a from res/values-mcc404/strings.xml (in English), even if the device is configured for Hindi. That is because in the resource-selection process, Android prefers an MCC match over a language match (as a priority Exception).

[Reference:, https://developer.android.com/guide/topics/resources/localization, ]

Questions # 10:

Select a correct statement about PagedList.

Options:

PagedList is content-mutable. This means that new content can be loaded into an instance of PagedList and the loaded items themselves can change once loaded.

PagedList is content-immutable. This means that, although new content can be loaded into an instance of PagedList, the loaded items themselves cannot change once loaded.

PagedList is content-accidental. This means that new content can be loaded into an instance of PagedList and the loaded items themselves can be changed to accidental values randomly.

Answer

Explanation

[Reference:, https://developer.android.com/topic/libraries/architecture/paging/ui, ]

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