Android Development Quiz

What is the name of the class used by Intent to store additional information?

• Parcelable

• DataStore

• Extra

• Bundle

What Activity method you use to retrieve a reference to an Android view by using the id attribute of a resource XML?

• findViewByReference(int id)

• retrieveResourceById(int id)

• findViewById(int id)

• findViewById(String id)

During an Activity life-cycle, what is the first callback method invoked by the system?

• onCreate()

• onStart()

• onStop()

• onRestore()

What does the following line of code achieve?

Intent intent = new Intent(FirstActivity.this, SecondActivity.class );

• Starts an activity

• Creates an implicit Intent.

• Creates a hidden Intent.

• Create an explicit Intent.

What is the parent class of all Activity widgets?

• Layout

• ViewGroup

• View

• Widget

You can create a custom view by extending class Activity.

• True

• False

What does the Android project folder “res/” contain?

• Resource files

• Java Activity classes

• Java source code

• Libraries

What does this code do?

Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setData(android.net.Uri.parse("http://www.androidatc.com")); startActivity(intent);

• Starts an activity using an implicit intent.

• Sends results to another activity

• Starts a sub-activity.

• Starts a service

Which method should you use to start a sub-activity?

• startSubActivity(Intent intent)

• startService(Intent intent)

• startActivity(Intent intent)

• startActivityForResult(Intent intent)

Which Android permission you should add to allow your application to read the device’s address book?

• READ_PHONE_STATE

• READ_ADDRESS_DATA

• READ_CONTACTS

• READ_PHONE_CONTACTS