Untitled Quiz

What is requestLocationUpdates()?

• A method used to periodically request location updates from a device

What is an API key?

• An authorization code that is used to identify and authenticate your Android app to Google’s servers

Give one use of Progress Bar

• To indicate an ongoing process, such as loading, saving, or downloading data

Give the query string for listing of calls registered in the Call Log

• content://call_log/calls

State any two attributes of Imageview

• src: Sets the source of the image to be displayed.
• scaleType: Determines how the image is scaled to fit the view

The ___________ method, provides a Bundle object as an argument so that you can use it to save your activity's state.

• onSaveInstanceState()

The ___________ is the recommended unit for specifying the dimension of views in your layout.

• dp (density-independent pixel)

____________ method is called when the content provider is started.

• onCreate()

____________ property is used to display the hint text when EditText is empty.

• android:hint

What is a web view?

• A component in Android that allows you to display web pages within your application

Write a note on Requirement Gathering techniques for Mobile Applications.

• The process of understanding the needs, expectations, and functionalities required for a mobile application.
• Techniques include:
  • User interviews
  • Surveys
  • Competitor analysis
  • Market research

Write on five major development approaches when building mobile applications.

• Native Development: Building apps using platform-specific languages and tools
• Hybrid Development: Combining web technologies like HTML, CSS, and JavaScript with native app components, creating cross-platform apps
• Cross-Platform Development: Using frameworks to create apps that can be deployed across multiple platforms with a single codebase (e.g., React Native, Flutter)
• Progressive Web Apps (PWAs): Web apps that offer native-like features, using technologies like service workers and app manifests

What is Pending intent?

• An object that represents an intent that can be executed at a later time

Explain the use of intent with the help of an example.

• Intents act as messages that can be sent between components in Android.
• They can be used to:
• Start an activity
• Start a service
• Broadcast a message
• Example: Launching a web browser to visit a specific website via ACTION_VIEW intent

Explain the life cycle of a Fragment.

• onCreate(): Called when a new Fragment instance is created.
• onCreateView(): Called to create the Fragment's user interface (UI) layout.
• onActivityCreated(): Called after the Fragment's activity is created.
• onStart(): Called when the Fragment becomes visible to the user.
• onResume(): Called when the Fragment is now in the foreground and ready to interact with the user.
• onPause(): Called when the Fragment is no longer in the foreground, but may still be visible.
• onStop(): Called when the Fragment is no longer visible to the user.
• onDestroyView(): Called to destroy the Fragment's UI layout.
• onDestroy(): Called when the Fragment is destroyed.

What is Options menu?

• A menu that appears when a user taps the Menu button or the overflow icon on their device.

Explain any three attributes found in Anchoring view.

• layout_anchorGravity: Specifies gravity for the anchored view.
• layout_anchor: The view that this view is anchored to.
• layout_anchorSide**: The side where the anchored view will be positioned (e.g., top, bottom, left, right).

Explain view and view groups.Give list of attributes used in view and view groups.

• View: A basic building block of a user interface (UI) in Android.
  • Examples: TextView, Button, EditText, ImageView
• ViewGroup: A container that holds and manages multiple views, controlling their layout and hierarchy.
  • Examples: LinearLayout, RelativeLayout, FrameLayout, ConstraintLayout

Give two uses of an Image Button.

• To provide an image to represent a button's action
• To visually enhance user interaction and feedback.

Write a note on filtering with an example.

• The process of selecting or extracting specific data from a larger set based on certain criteria.
• Example: Using a SearchView widget to filter a list of contacts based on a user-entered name.

Compare and explain EditText and AutoCompleteTextView with examples.

• EditText: A text input field where users can enter and edit text.
  • Example: A field for entering a password or username.
• AutoCompleteTextView: A text field that provides suggestions as the user types, improving user input efficiency.
  • Example: A search box for searching locations that provides autocomplete suggestions.

Write a note on external storage.

• Storage space available on a device, accessible externally by other applications.
• Used to store data files that persist beyond the app's lifetime
• External storage requires appropriate permissions.

Discuss displaying map in android.

• Achieved using the GoogleMap class from the Google Maps Android API.
• Steps:
  • Obtain an API key from Google Cloud Platform.
  • Add the Google Maps Android API library to your project.
  • Add a <fragment> tag to the layout file and set the fragment's class to SupportMapFragment.
  • Use the getMapAsync() method to get a reference to the GoogleMap object.
  • Configure the map with features like markers, polylines, and zoom controls.

Explain the basic ways of handling persisting data in Android.

• SharedPreferences: For storing small amounts of key-value data.
• Internal Storage: For storing files directly within the app's private directory.
• External Storage: Using public storage spaces on the device for data persistence.
• Databases: Using SQLite databases to manage structured data.