Android Part-I

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Android Part-I

You need to remove an Event based on it;s id from your API, Which code snippet defines that request in Retrofit? *

1 point

@DELETE("events) fun deleteEvent(@Path("id") id: Long): Call

@DELETE("events/{id}") fun deleteEvent(@Path("id") id: Long): Call

@REMOVE("events/{id}") fun deleteEvent(@Path("id") id: Long): Call

When will an activity's onActivityResult()be called? *

1 point

when calling finish()in the parent activity

when placing an app into the background by sitching to another app

When onStop() is called in the target activity

when calling finish() in the target activity

You launch your app, and when you navigate to a new screen it crashes, Which action will NOT help you diagnose the issue? *

1 point

Set breakpoints and then step through the code line by line

Use the profiler tools in Android Studio to detect anomalies CPU, and network usage.

Add a Thread.sleep()call before you start the new activity.

inspect the logs in Logcat.

IF the main thread is blocked for too long, the system displays the _ dialog? *

1 point

Thread Not Responding

Application Paused

Application Not Responding

Application Blocked

When would you use a product flavour in your build setup? *

1 point

when you need to have the app's strings present in multiple lanuages

when you have to provide different versions of your app based on the physical device size

when you want to provide different versions of your app based on the device screen density

when you want to provide different version of your app with custom configuration and resources

Given the definition below. how would you get access a TextView with an ID of text_home contained in thr layout file of a Fragment class? *

1 point

root.find(R.id.text_home)

findViewById(R.id.text_home)

root.getById(R.id.text_home)

root.findViewById(R.id.text_home)

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

1 point

android:talkBack

android:labelFor

android:hint

android:contentDescription

Why do you use the AndroidJUnitRunner when running UI tests? *

1 point

The test runner facilitates loading your test package and the app under test onto a device or emulator, runs the test, and reports the results.

The test runner creating screenshots of each screen that displayed while tests are executed.

The test runner facilitates parallelization of test classes by providing for each test class.

The test runner facilitates interacting with visible elements on a device, regardless of the activity or fragment that has focus.

What is the benifit of using @VisibleForTesting annotation? *

1 point

to denote that a class, methos, or field has its visibility relaxed to make code testable

to denote that a class, method, or field is visible only in the test code

to denote that a class, method, or field has its visibility increased to make code less testable

to throw a run-time error if a class, methos, or field with this annotation is accessed improperly

20. Why is it problematic to define sizes using pixels on Android? *

1 point

Although screen pixel density varies, this does not impact the use of pixels to define sizes.

Large devices always have more pixels, so your UI elements will be e=affected if you define them with pixels.

The same number of pixels may correspond to different physical sizes, affecting the appearance of your UI elements.

Different devices have different understanding of what a pixel is , affecting the appearance of your UI elements

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

1 point

the onSaveInstance()method

all of these answers

persistent storage

ViewModel objects

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? *

1 point

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

To add features, components, and permissions to your Android app, which file needs to be edited? *

1 point

AndroidManifest.xml

Components.xml

AppManifest.xml

ComponentManifest.xml

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

1 point

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'

19. How would you retrieve the value of a user's email from SharedPreferences while ensuring that the returned value is not null? *

1 point

getPreferances(this).getString(Email,"")

getDefaultSharedPrefarances(this).getString(EMAIL,null)

getDefaultSharedPreferances(this).getString(EMAIL,"")

getPreferances(this).getString(EMAIL,null)

How would you specify in your build.gradle file that your app required at least API level 21 to run, but that it can be tested on API level 28? *

1 point

Option 1

Option 2

Option 3

Option 4

Why might push notifications stop working? *

1 point

all of these answers

The device token is not being sent to push provider correctly.

Google Play Services is not installed on the deivce/emulator.

Battery optimization is turned on on the device.

Given the fragment below, how would you get access to a TextView with an ID of text_home contained in the layout file of a Fragment class? *

1 point

root.getById(R.id.text_home)

findViewByID(R.id.text_home)

root.findViewById(R.id.text_home)

root.find(R.id.text_home)

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