Quiz | Croma Campus

What is the use of RecyclerView in Android?

To display a fixed number of items
To display a large dataset of items
To handle user input
To manage network operations

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Which keyword is used to define a constant in Java?

const
final
static
immutable

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How do you define a layout in XML for an Android application?

<layout>
<view>
<design>
<xml>

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How can you optimize battery usage in an Android application?

Using background services
Using JobScheduler and WorkManager
Using IntentService
Using multiple activities

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Which class in Android is used to store and retrieve data in the form of key-value pairs?

SharedPreferences
ContentProvider
SQLiteDatabase
FileProvider

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Which component is responsible for managing the lifecycle of an Android app?

Activity
Fragment
Service
ActivityManager

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Which of the following is NOT a type of Context in Android?

Application Context
Activity Context
Service Context
Fragment Context

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Which method is used to start a new thread in Java?

begin()
start()
run()
execute()

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Which method is used to close an activity in Android?

finish()
stop()
close()
destroy()

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How can you handle different screen sizes in Android?

Use of flexible layouts
Fixed layouts
Using pixel-based dimensions
Ignoring the issue

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What is the default value of a boolean variable in Java?

TRUE
FALSE
null
0

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How can you perform network operations in Android?

Using AsyncTask
Using Handler
Using IntentService
All of the above

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Which method is used to start an activity for a result in Android?

startActivity()
startActivityForResult()
startResultActivity()
startForResultActivity()

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How can you avoid ANR in Android?

Using background threads
Using heavy tasks on main thread
Blocking UI thread
Ignoring system events

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How can you access a view by its id in Android?

findViewById()
getViewById()
findView()
getView()

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What is the purpose of the 'Looper' class in Android?

To manage threads
To manage message queues for threads
To handle UI rendering
To manage network requests

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What does the 'Parcelable' interface in Android do?

Serializes objects
Allows objects to be serialized and passed between activities
Manages app resources
Handles UI events

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How do you handle long-running operations in Android without blocking the UI?

Using background threads
Using main thread
Using UI thread
Using main activity thread

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Which method is used to display a dialog in Android?

showDialog()
displayDialog()
createDialog()
presentDialog()

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What is the use of an Intent in Android?

To pass data between activities
To draw the UI
To handle background tasks
To manage the lifecycle

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Which file contains the layout of an activity?

.java
.class
.xml
.json

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What is ADB in Android?

Android Debug Bridge
x
Application Development Bridge
Application Database

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What is the AndroidManifest.xml file used for?

Declaring app components
Defining UI layouts
Storing data
Handling background tasks

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Which method is called when an activity is started for the first time?

onStart()
onCreate()
onResume()
onDestroy()

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How can you define a new style in Android?

In strings.xml
In styles.xml
In layout.xml
In colors.xml

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What does APK stand for?

Android Phone Kit
Android Page Kit
Android Package Kit
Android Package Keeper

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Which company developed Android?

Apple
Google
Microsoft
IBM

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How do you declare a service in AndroidManifest.xml?

<service>
<intent>
<activity>
<receiver>

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