Android Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Android. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Can a user save all database updates in onStop ()?

A - Yes, a user can save all database updates in onStop()

B - No, a user can save in onSavedInstance()

C - No, a user can save in a Bundle()

D - No, In some situations, a user can't reach onStop()

Answer : D

Explanation

Due to low memory problem. your application will close before reaching onStop()

Q 2 - WHich of the following is/are are the subclasses in Android?

A - Action Bar Activity

B - Launcher Activity

C - Preference Activity

D - Tab Activity

E - All of above

Answer : E

Explanation

Action bar,Launcher, Preference and Tab activities are subclasses of activities in android

Q 3 -What are the return values of onStartCommand() in android services?

A - START_STICKY

B - START_NOT_STICKY

C - START_REDELIVER_INTENT

D - All of the above

E - None of the above

Answer : D

Explanation

START_STICKY − If android stops services forcefully, using with START_STICKY, it can be restarted automatically without the user interaction.

START_NOT_STICKY − If android stops services forcefully, it will not restart services till user start services.

START_REDELIVER_INTENT − If android stops services forcefully, it will restart services by re-sending an intent.

Q 4 - What is the time limit of broadcast receiver in android?

Answer : A

Explanation

Broadcast receiver has to do operation within 10 sec or else ANR will occur

Q 5 - How to get current location in android?

A - Using with GPRS

B - Using location provider

C - A & B

D - SQlite

E - Network servers

Answer : C

Explanation

GPRS and Location provider is used to fetch the current location of a phone as longitude and latitude.

Q 6 -What is LastKnownLocation in android?

A - To find the last location of a phone

B - To find known location of a phone

C - To find the last known location of a phone.

D - None of the above

Answer : C

To find the last known location of a phone we need to use LastKnownLocation, the syntax is as shown below.

Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);

Q 7 - What is the package name of JSON?

Answer : D

org.json is the package name of JSON object and JSON array

Q 8 - What are the JSON elements in android?

A - integer, boolean

B - boolean

C - null

D - Number, string, boolean, null, array, and object

Answer : D

Json elements are Number, string, boolean, null, array, and object

Q 9 - What is the purpose of super.onCreate() in android?

A - To create an activity

B - To create a graphical window for subclass

C - It allows the developers to write the program

D - None of the above

Answer : B

The super.onCreate() will create the graphical window for subclasses and place at onCreate() method.

Q 10 - Can a class be immutable in android?

A - No, it can't

B - Yes, Class can be immutable

C - Can't make the class as final class

D - None of the above

Answer : B

Class can be immutable.

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