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Android Development Quiz

Create an image of a smartphone displaying an Android development interface with coding elements, vibrant colors, and illustrations of Activities and Intents, evoking a sense of technology and learning.

Android Development Quiz

Test your knowledge on Android development concepts with our engaging quiz! This quiz consists of 11 carefully crafted questions designed to challenge your understanding of key topics.

Understand Activities and Intents
Discover the lifecycle of an Activity
Learn about Services and BroadcastReceivers

11 Questions3 MinutesCreated by CodingGuru247

Name:

What is an Activity ?

A single, focused thing that the user can do, representing a screen

A sub-component of the UI that can represent a part of the screen, and can be reused

A utility class in Android that handles background work

How can you start an activity ?

By creating it like 'new MyActivity()' and calling start() on it

Using Intent and specifying the target activity class

By adding it in the AndroidManifest.xml file so it's started and handled by the system

Intent I = new Intent(); I.setAction(Intent.ACTION_VIEW);

This is an explicit intent

This is an implicit intent

This is an intent used for starting a service

How do you know what is the first activity launched by an app

It's the activity that extends 'LauncherActivity'

It's the activity that has an intent filter with 'category android:name="android.intent.category.LAUNCHER"'

It's the activity that has the flag FLAG_ACTIVITY_NEW_TASK

When is the activity's 'onActivityResult' called ?

When another activity was launched with 'startActivityForResult' from the current activity, and user returns back

When you call 'setResult(...)' from another activity that was launched from your initial activity

OnActivityResult is always called when returning to your activity

What is the sequence of activity callbacks when starting an activity ?

OnCreate() -> onStart()

OnCreate() -> onStart() -> onResume()

OnStart() -> onCreate() -> onResume()

What happens to the activity if you rotate the phone ?

Nothing, activity is rendered in landscape mode

Activity gets recreated

Activity is not recreated and the new layout for the requested orientation is used

What is a Service ?

Any external utility that the app uses and consumes

A component that can perform long-running tasks in the background

An Android component that has its own user interface

What is a BroadcastReceiver ?

A component that handles updates from any REST API service

A component that sends and receives messages from Android system or from other apps

A component that can perform asynchronous long-running operations

Logging : which one is the most restrictive (fewer log messages) log level from the ones below ?

Verbose

Warning

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