Android - Quiz 10

In Android, the first callback is called when activity is visible is

• onCreate

• onResume

• onStart

• onStop

Which design pattern will you use to create a complex object

• Factory pattern

• Abstract factory pattern

• Builder pattern

• Prototype pattern

What is an Activity?

• A single screen the user sees on the device at one time

• A message sent among the major building blocks

• A component that runs in the background without any interface

• ontext referring to the application environment

Android is based on Linux for the following reason

• Security

• Portability

• Networking

• All of these

The Logcat window in Android Studio displays system messages, such as when a garbage collection occurs, and messages that you added to your app with the Log class. It displays messages in real time and keeps a history so that you can view older messages.

• TRUE

• FALSE

getExternalFilesDir( ) method is used to get the directory of the external storage.

• TRUE

• FALSE

What is NOT used in monitoring an activity.

• Visible lifetime

• Background lifetime

• Entire lifetime

• Foreground lifetime

……………. controls life cycle of activities and manages activity stack level requirements

• Windows Manager

•  Content Provider

• Activity Manager

How many Observers can be notified by Subject?

• Only 1

• 255

• Depends on memory

• Unlimited

Which design pattern will you use to create a complex object

• Factory pattern

• Abstract factory pattern

• Builder pattern

• Prototype pattern