R4RIN – MCQs, Mock Tests | Android Android Programming MCQ Set 2

What is the codename of the latest Android platform?

1. Ice Cream Sandwich
2. Lollipop
3. Honeycomb
4. KitKat

✅ Correct Answer: 2

invalidateOptionsMenu() method of ActionBarActivity calls:

1. onPrepareOptionsMenu()
2. onCreateOptionsMenu()
3. both (a) and (b)
4. None of these

✅ Correct Answer: 1

Is it possible to update this textView as follows ? new Thread(new Runnable() { @Override public void run() { textView.setText("Hello World"); } }).start();

1. Yes, it is possible and it's recommended to use its own thread to update views
2. No, because system throws a Fatal Exception: "Only the original thread that created a view hierarchy can touch its views"
3. both (a) and (b)
4. None of the above

✅ Correct Answer: 2

Which method can get the context tied to the lifecycle of the entire application ?

1. View.getContext()
2. Activity.this
3. Activity.getApplicationContext()
4. ContextWrapper.getBaseContext()

✅ Correct Answer: 3

AsyncTask methods can run on the UI thread, but one of them doesn't run on this UI thread, which one?

1. onPreExecute()
2. publishProgress()
3. doInBackground()
4. onPostExecute()

✅ Correct Answer: 3

What is the latest layout proposed by the android sdk?

1. GridLayout
2. RelativeLayout
3. LinearLayout
4. DrawerLayout

✅ Correct Answer: 4

Which type of file are Android layouts read from?

1. Time's Up!
2. res
3. xaml
4. txt

✅ Correct Answer: 3

Which of the following system services does Android rely on for the Linux kernel?

1. Neither security nor network stack
2. Security
3. Network stack
4. Both security and network stack

✅ Correct Answer: 4

Can the ActionBarCompat library propose ActionBar features for old phones?

1. No
2. Yes, it can support devices from level api 2.1
3. both (a) and (b)
4. None of the above

✅ Correct Answer: 2

Which of the following is Android's main programming language ?

1. Java
2. JavaScripts
3. VB-Script
4. C++

✅ Correct Answer: 1

Which of the following defines your Android application components?

1. myApp.xml file
2. AndroidManifest.pkg file
3. AndroidManifest.xml file
4. None of these

✅ Correct Answer: 3

What should dimensions be specified in so that layouts adapt to any screen size?

1. Pixels
2. Density-independent pixels
3. both (a) and (b)
4. None of the above

✅ Correct Answer: 2

What version(s) will you NOT be able to run the app if you set min sdk version to be 8 for an app

1. 7
2. 10
3. 14
4. 12

✅ Correct Answer: 1

Which database is available for developers in Android?

1. SQL Server
2. NoSQL
3. SQLite
4. Oracle

✅ Correct Answer: 3

Which folder should the App Icon be kept under?

1. src
2. anim
3. res
4. None of These

✅ Correct Answer: 3

Which extension does the Android Manifest file have?

1. jar
2. xml
3. apk
4. java

✅ Correct Answer: 2

Which of the following is the correct way to get pass string in an Intent, where key and value are both string variables?

1. intent.putString(key,value);
2. intent.putKey(key,value);; i
3. intent.putExtra(key,value)
4. ntent.putValue(key,value);

✅ Correct Answer: 3

Which is the name of component used to display web pages in the application?

1. WebView
2. WebBrowser
3. BrowserView
4. Browser

✅ Correct Answer: 1

Which of these Activity lifecycle events is when the activity is about to become visible to the user from a hidden state?

1. Start()
2. onCreate()
3. Resume()
4. onStart()

✅ Correct Answer: 4

Which API should you use to bring the data over to the device asynchronously if you have a fragment which displays a ListViewContaining query results?

1. android.app.LoaderManager
2. android.app.ListActivity
3. android.app.LocalActivityManager
4. None of the above

✅ Correct Answer: 1

What is likely to cause the UI to behave sluggishly or crash while making network calls?

1. Network Latency
2. Virus on the server
3. Hardware malfunction
4. Activity Manager contains too much

✅ Correct Answer: 1

How can Android applications "borrow" functionality from other applications?

1. Application lifecyle methods
2. Intent objects
3. Content Provider system
4. None of the above

✅ Correct Answer: 2

Which event listener is used when an Android device has changed orientation?

1. OrientationEventListener
2. https://quizack.com/android-programming/mcq/which-event-listener-is-used-when-an-android-device-has-changed-orientation#:~:text=PositioningEventListener
3. DeviceOrientationEventListener
4. LayoutEventListener

✅ Correct Answer: 1

Which externalizing resources are needed for application development?

1. Different language versions of the application
2. None of these
3. Different devices
4. All of these

✅ Correct Answer: 4

Why is a Parcelable used?

1. To show a message dialog
2. To store data in SQLite database
3. To transmit structured objects between activities or fragments
4. To parse a json file

✅ Correct Answer: 3

What class does Android use to communicate a request for an action to be performed?

1. Request
2. Service
3. Activity
4. Intent

✅ Correct Answer: 4

Which AsyncTask method does not run on the UI thread?

1. publishProgress()
2. onPostExecute()
3. onPreExecute()
4. doInBackground()

✅ Correct Answer: 4

Which method is called to notify a Fragment is visible when they are inside a ViewPager?

1. setUserVisibleHint(boolean isVisibleToUser)
2. onVisible(boolean isVisible)
3. onAttach(Activity activity)
4. isAdded()

✅ Correct Answer: 1

Which method should be used to refresh the ActionBar if you use ActionBarCompat library?

1. invalidateOptionsMenu()
2. invalidateActionBar()
3. invalidate()
4. invalidateMenuItems()

✅ Correct Answer: 1

Which theme's attribute changes the color of the status bar in Lollipop?

1. android:colorPrimaryDark
2. android:colorPrimary
3. android:colorAccent
4. None of these

✅ Correct Answer: 1

What is the default behavior of an Activity when you manually rotate the device screen?

1. The activity is destroyed and reloaded entirely
2. The activity is remained unchanged
3. onPause() and onResume() activity callback are called only
4. onStop() and onStart() activity callback are called only

✅ Correct Answer: 1

What should you do if you want access list of paired Bluetooth devices on Android?

1. add <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" /> to the manifest.xml
2. add <uses-permission android:name="android.permission.BLUETOOTH" /> permission to the manifest.xml. you can not access paired bluetooth devices list
3. both (a) and (b)
4. None of the above

✅ Correct Answer: 1

Which is a benefit of deodexing?

1. Custom themes
2. Remove files
3. Install custom apps
4. Speed boost

✅ Correct Answer: 1

When an asynchronous task is executed, the task goes through several steps. Which option is not a step of an asynchronous task?

1. onPostExecute()
2. onPreExecute()
3. onProgressUpdate()
4. onBackground()

✅ Correct Answer: 4

How do you request permission for your application?

1. <request-permission> in the Android Manifest
2. <uses-permission> in the Android Manifest
3. You do not need to request permissions for any application
4. <requires-permission> in the Android Manifest

✅ Correct Answer: 2

Which is the build system recommended by Google?

1. ant
2. gradle
3. maven
4. None of These

✅ Correct Answer: 2

Which tool of Android sdk allows installing applications, viewing logs and pooling files from Android device?

1. ddms
2. Android manager
3. logcat
4. adb

✅ Correct Answer: 4

Which package encompasses the interactive UI components of Android such as buttons and text fields?

1. android.widget
2. android.view
3. android.view.ViewGroup
4. None of these

✅ Correct Answer: 1

Which class should you extend when using/creating a database?

1. SQLiteOpenHelper
2. SQLiteHelper
3. SQLiteDatabase
4. SQLiteDatabasehelper

✅ Correct Answer: 1

What should you do in order to get paired Bluetooth device list?

1. Add <user-permission android:name="android.permission.BLUETOOTH_ADMIN" /> permission to the manifest.xml
2. None of the above
3. Not possible
4. Add <user-feature android:name="android.permission.BLUETOOTH" /> feature to the manifest.xml

✅ Correct Answer: 1

Android naming has followed an alphabetical order from Android 1.0 to Lollipop.

1. Fully True if you consider first letters of every version release up till Lollipop(5.0)
2. Partially True if you consider first letters of every version release up till Lollipop(5.0)
3. False
4. None of the above

✅ Correct Answer: 1

Which is the descriptive file that presents essential information about your app to the Android system?

1. AndroidManifest.xml
2. local.properties
3. build.gradle
4. build.xml

✅ Correct Answer: 1

What is the message content for Discount: %1$d € String message = context.getString(R.string.discount, 10); ?

1. Discount: 10% €
2. Discount: 10 €
3. Discount: 10%
4. None of These

✅ Correct Answer: 2

In which resource folder should we create an animation file?

1. animation
2. raw
3. values
4. anim

✅ Correct Answer: 4

Which of the following is not a valid stage in an Activity's lifecycle?

1. onStop
2. onPause
3. onStart
4. onFinish

✅ Correct Answer: 4

What is the maximum size of an Android app?

1. 40 mb
2. 4 gb
3. 1.3 gb
4. 100 mb

✅ Correct Answer: 1

Which callbacks in AsyncTask get executed on main thread?

1. onProgressUpdate
2. doInBackground
3. onPostExecute
4. both onPostExecute and onProgressUpdate

✅ Correct Answer: 4

What is the key used for a bundle extra parameter on a PendingIntent holding a location?

1. public static final String KEY_LOCATION_CHANGED
2. https://quizack.com/android-programming/mcq/what-is-the-key-used-for-a-bundle-extra-parameter-on-a-pendingintent-holding-a-location#:~:text=public%20static%20final%20String%20KEY_STATUS_CHANGED
3. public static final String KEY_PROXIMITY_ENTERING
4. public static final String KEY_PROVIDER_ENABLED

✅ Correct Answer: 1

Which of the following is a layout that organizes its children into a horizontal or vertical stack?

1. RelativeLayout
2. TableLayout
3. LinearLayout
4. FrameLayout

✅ Correct Answer: 3

What is the attribute of EditText called that displays a text that goes away once you write something?

1. emptyText
2. hint
3. description
4. text

✅ Correct Answer: 2

Which function is used to send value from one activity to another?

1. intent.send()
2. send()
3. intent.transfer()
4. intent.putextra()

✅ Correct Answer: 4

Where should you specify which activity should launch first in your app?

1. Manifest file
2. Main Class file
3. All of the above
4. Properties file

✅ Correct Answer: 1

Which method from Activity is used to update the UI ?

1. runOnUIThread()
2. invalidateAll()
3. invalidate()
4. repaint()

✅ Correct Answer: 1

C2DM was deprecated and replaced by:

1. Polling. . .
2. GCS
3. GCM
4. APS.

✅ Correct Answer: 3

Which manifest uses-configuration should you use if your application requires a finger activated touch screen on the device?

1. <uses-configuration android:reqNavigation="finger" /> must be in your manifest
2. <uses-configuration android:reqTouchScreen /> must be in your manifest
3. <uses-configuration android:reqTouchScreen="finger" /> must be in your manifest
4. None of the above

✅ Correct Answer: 3

Which method is called first when an Activity is started?

1. onCreate();
2. onStart();
3. Both a and b
4. onResume();

✅ Correct Answer: 3

Which of the following are valid features that you can request using requestWindowFeature?

1. FEATURE_NO_TITLE
2. FEATURE_NO_ICON
3. FEATURE_RIGHT_ICON
4. FEATURE_NO_MENU

✅ Correct Answer: 1

Which of the following can be used to bind data from an SQL database to a ListView in an Android application?

1. SimpleCursor
2. SimpleCursorAdapter
3. SimpleAdapter
4. SQLiteCursor

✅ Correct Answer: 2

Which of the following would you have to include in your project to use the SimpleAdapter class?

1. import android.content;
2. import android.widget;
3. import android.database;
4. import android.database.sqlite;

✅ Correct Answer: 2

What is the purpose of the ContentProvider class?

1. To play rich media content files.
2. To create and publish rich media files.
3. To share data between Android applications.
4. To access the global information about an application environment.

✅ Correct Answer: 3

Which of the following is the parent class for the main application class in an Android application that has a user interface?

1. MIDLet
2. AndroidApp
3. Activity
4. AppLet

✅ Correct Answer: 3

Which of the following can be accomplished by using the TelephoneNumberUtil class?

1. Save a phone number to the contacts in the phone device.
2. Retrieve a phone number from the contacts in the phone device.
3. Delete a phone number from the contacts in the phone device.
4. Format an international telephone number.

✅ Correct Answer: 4

Which of the following is the immediate base class for Activity and Service classes?

1. Application
2. ApplicationContext
3. Contex
4. Component

✅ Correct Answer: 2

Which of the following would you have to include in your project to use the APIs and classes required to access the camera on the mobile device?

1. import android.drivers;
2. import android.hardware.camera;
3. import android.camera;
4. import android.hardware;

✅ Correct Answer: 4

Which of the following are classes that can be used to handle the Bluetooth functionality on a device?

1. Adapter
2. Manager
3. Matcher
4. BluetoothAdapter

✅ Correct Answer: 4

Which of the following are life-cycle methods of an Activity that can be implemented to perform various operations during the lifetime of an Activity?

1. onCreate
2. onInit
3. onPause
4. All of the above

✅ Correct Answer: 4

Which of the following should be used to save the unsaved data and release resources being used by an Android application?

1. Activity.onStop()
2. Activity.onPause()
3. Activity.onDestroy()
4. Activity.onShutdown()

✅ Correct Answer: 2

Which of the following fields of the Message class should be used to store custom message codes about the Message?

1. tag
2. what
3. arg1
4. arg2

✅ Correct Answer: 2

Consider the code snippet below: public class MyReceiver extends PhoneStateIntentReceiver { @Override public void onReceiveIntent(Context context, Intent intent) { if (intent.action == Intent.CALL_ACTION) { } } } Assuming that notifyPhoneCallState has been called to enable MyReceiver to receive notifications about the phone call states, in which of the following cases will the code in get executed?

1. When the device receives an incoming phone call.
2. When an outgoing phone call is initiated on the device.
3. When an incoming phone call is terminated.
4. The code in will never get executed.

✅ Correct Answer: 4

Which of the following are true about Intent.CALL_ACTION and Intent.DIAL_ACTION?

1. Intent.action == Intent.CALL_ACTION is true when a phone call is received on the device.
2. Intent.action = Intent.CALL_ACTION is used when a phone number is to be dialled without showing a UI on the device.
3. Intent.action = Intent.DIAL_ACTION is used when a phone number is to be dialled without showing a UI on the device.
4. Intent.action = Intent.CALL_ACTION is used when a phone number is to be dialled without the user having to explicitly initiate the call.

✅ Correct Answer: 4

Which of the following can you use to display an HTML web page in an Android application?

1. WebBrowser
2. BrowserView
3. WebView
4. Browser

✅ Correct Answer: 3

Which of the following can be used to navigate between screens of different Android applications?

1. Binder
2. Flow
3. Navigate
4. Intent

✅ Correct Answer: 4

What is "Android-activityCreator"?

1. A command line tool to create Android project files.
2. A framework to create unit tests for Android projects.
3. A resource editor to create user interface for Android applications.
4. An emulator to execute and debug Android projects.

✅ Correct Answer: 1

What is "Android-dx"?

1. A command line tool to create Android project files.
2. A framework to create unit tests for Android projects.
3. A resource editor to create user interface for Android applications.
4. A tool to generate Android byte code from .class files.

✅ Correct Answer: 4

Suppose MyView is a class derived from View and mView is a variable of type MyView. Which of the following should be used to display mView when the Android application is started?

1. Call setCurrentView(mView) in the startApp() of the main application class.
2. Call setContentView(mView) in the startApp() of the main application class.
3. Call setContentView(mView) in the startApp() of the main application class.
4. Call setContentView(mView) in the onCreate() of the main application class.

✅ Correct Answer: 4