Android Common Controls Quiz

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What type of objects are used to build all user interface elements in an Android app?

Activity and Intent objects

Model and Controller objects

Service and Broadcast objects

View and ViewGroup objects (correct)

Which type of object in Android is responsible for defining the position of views in the interface?

Intent

View

Activity

ViewGroup (correct)

What are ViewGroups also commonly referred to as in Android?

Output groups

Container views (correct)

Input groups

Control views

Which type of object in Android draws something on the screen that the user can interact with?

View Signup and view all the answers

What type of object is a layout in Android?

ViewGroup Signup and view all the answers

What is the purpose of an event listener in Android?

To capture user interaction with the UI Signup and view all the answers

Which class in Android contains a range of event listener interfaces?

View Signup and view all the answers

What is the role of a callback method in Android event handling?

To respond to a specific type of event Signup and view all the answers

How are events handled in Android applications?

Handled sequentially as they occur Signup and view all the answers

Why must a view have an event listener and callback method in Android?

To allow the view to respond to user interactions Signup and view all the answers

How can a layout be declared in Android?

Both using XML Layout and instantiating elements at runtime Signup and view all the answers

Which of the following is NOT a pre-built UI component in Android?

Switch Signup and view all the answers

What is the purpose of using Android's XML vocabulary for UI design?

To allow quick design of UI layouts with nested elements Signup and view all the answers

Which of the following is NOT a type of layout model provided by Android?

Grid Layout Signup and view all the answers

In Android, how can an application interact with View and ViewGroup objects?

By manipulating properties programmatically Signup and view all the answers

What is the purpose of using ConstraintLayout in Android app development?

To create complex layouts quickly and easily without nesting other layout types Signup and view all the answers

What is the role of an Adapter in Android's AdapterView class?

Retrieve data and convert it into a view Signup and view all the answers

How are input controls added to the user interface in an Android app?

By drag-and-drop on the design window or adding XML elements to the layout file Signup and view all the answers

Which component acts as a bridge between the data source and the AdapterView layout in Android?

Adapter Signup and view all the answers

What is a key advantage of using a layout that subclasses AdapterView with dynamic content in Android apps?

Efficient population of views at runtime Signup and view all the answers

What type of control is a Button in Android?

Push-button that performs an action Signup and view all the answers

Which control is used for cases where only one option can be selected in a group?

Radio button Signup and view all the answers

What is the purpose of a Spinner in Android?

Selecting one value from a set Signup and view all the answers

What is the basic approach to creating custom components in Android?

Extend an existing View class and override superclass methods Signup and view all the answers

Which control allows the user to toggle between two states?

Toggle button Signup and view all the answers

What method is used to load the XML layout resource in an Android Activity?

setContentView() Signup and view all the answers

In Android, what should be included in the Activity.onCreate() method to set the layout resource for an Activity?

setContentView(R.layout.activity_main) Signup and view all the answers

What does Android Studio allow developers to create to optimize UI design for specific screen sizes?

Alternative layout resources Signup and view all the answers

In Android, what kind of hierarchy is used to define the layout structure?

View hierarchy Signup and view all the answers

Which method should be called to create a suggested qualifier for optimizing UI design in Android Studio?

Create Resource Qualifier Signup and view all the answers

What method is called on a View object when it is touched in Android?

onTouchEvent() Signup and view all the answers

In Android, what is the purpose of android:onClick resource for a Button view?

To call a callback method for capturing click events on the button view Signup and view all the answers

What is the purpose of an event listener in Android?

To detect and handle user interactions with UI elements Signup and view all the answers

Which event listener in Android is used to detect click style events?

onClickListener Signup and view all the answers

What callback method does the onLongClickListener correspond to in Android?

onLongClick() Signup and view all the answers

Which method is used to handle touch events on a View object in Android?

onTouchEvent() Signup and view all the answers

What is the purpose of the onClick() callback method in Android?

To handle click style events on UI elements Signup and view all the answers

What type of interface element can the onClickListener be associated with in Android?

TextView Signup and view all the answers

In Android, what is the primary function of an event handler?

To execute tasks based on user interactions Signup and view all the answers

Android Common Controls Quiz

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Questions and Answers

What type of objects are used to build all user interface elements in an Android app?

Which type of object in Android is responsible for defining the position of views in the interface?

What are ViewGroups also commonly referred to as in Android?

Which type of object in Android draws something on the screen that the user can interact with?

What type of object is a layout in Android?

What is the purpose of an event listener in Android?

Which class in Android contains a range of event listener interfaces?

What is the role of a callback method in Android event handling?

How are events handled in Android applications?

Why must a view have an event listener and callback method in Android?

How can a layout be declared in Android?

Which of the following is NOT a pre-built UI component in Android?

What is the purpose of using Android's XML vocabulary for UI design?

Which of the following is NOT a type of layout model provided by Android?

In Android, how can an application interact with View and ViewGroup objects?

What is the purpose of using ConstraintLayout in Android app development?

What is the role of an Adapter in Android's AdapterView class?

How are input controls added to the user interface in an Android app?

Which component acts as a bridge between the data source and the AdapterView layout in Android?

What is a key advantage of using a layout that subclasses AdapterView with dynamic content in Android apps?

What type of control is a Button in Android?

Which control is used for cases where only one option can be selected in a group?

What is the purpose of a Spinner in Android?

What is the basic approach to creating custom components in Android?

Which control allows the user to toggle between two states?

What method is used to load the XML layout resource in an Android Activity?

In Android, what should be included in the Activity.onCreate() method to set the layout resource for an Activity?

What does Android Studio allow developers to create to optimize UI design for specific screen sizes?

In Android, what kind of hierarchy is used to define the layout structure?

Which method should be called to create a suggested qualifier for optimizing UI design in Android Studio?

What method is called on a View object when it is touched in Android?

In Android, what is the purpose of android:onClick resource for a Button view?

What is the purpose of an event listener in Android?

Which event listener in Android is used to detect click style events?

What callback method does the onLongClickListener correspond to in Android?

Which method is used to handle touch events on a View object in Android?

What is the purpose of the onClick() callback method in Android?

What type of interface element can the onClickListener be associated with in Android?

In Android, what is the primary function of an event handler?

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