Compose Pagers Quiz – Answertopia

This quiz focuses on the use of VerticalPager and HorizontalPager composables in Jetpack Compose. These composables enable users to swipe through content horizontally or vertically, making them ideal for displaying multiple items in a paginated format. In this quiz, you will test your understanding of how to configure pagers, manage pager states, navigate programmatically, and utilize various properties to customize the paging behavior. Each question is designed to challenge your knowledge and deepen your understanding of using pagers in a Compose-based Android project.

How can you enable or disable user scrolling in a pager?

Through the pageContent lambda.

By setting the modifier parameter.

Using the userScrollEnabled property.

By adjusting the state property.

None

What is the purpose of the modifier parameter in the VerticalPager or HorizontalPager composables?

It sets the number of pages displayed simultaneously.

It adjusts the page transition speed.

It defines the scrolling direction of the pager.

It is used to modify the appearance and layout of the pager.

None

Which property is mandatory when using VerticalPager or HorizontalPager composables?

pageSize

modifier

state

userScrollEnabled

None

How do you determine if a pager is currently scrolling?

With the userScrollEnabled property set to false.

Using the isScrollInProgress property of pagerState.

Through the onScrollChanged() method.

By checking the size of the pageContent lambda.

None

Which of the following is required to display a book cover in a HorizontalPager?

An XML vector graphic for each image.

An XML layout file for each book cover.

A drawable resource and an Image composable.

A RecyclerView with a custom adapter.

None

How can you specify the number of pages in a pager?

By declaring the number of pages in the pageSize property.

By setting the pageCount property directly on the pager.

By passing the number of pages to the rememberPagerState function.

By using the size parameter in the VerticalPager or HorizontalPager.

None

What is the function of the 'scrollToPage()' method in pager state?

It changes the page size dynamically.

It adjusts the scroll speed of the pager.

It scrolls to a specific page with animation.

It scrolls to a specific page instantly without animation.

None

Which of the following is a valid use of pagerState?

Adjusting the font size of Text composables.

Controlling the alignment of items within a Row.

Defining the background color of a Button.

Determining the current page number in a pager.

None

Which method is recommended for creating a coroutine scope in Compose?

launchNewScope()

createCoroutineScope()

rememberCoroutineScope()

CoroutineScopeProvider

None

10.

What does the 'reverseLayout' property do in a pager?

Reverses the order of page numbers.

Displays pages in the opposite direction.

Inverts the colors of each page.

Disables user interactions with the pager.

None

11.

How do you define a fixed number of columns in a VerticalPager?

Using the columnCount property.

By defining a fixed width for each page.

By setting the horizontalArrangement property.

With the columns parameter set to StaggeredGridCells.Fixed.

None

12.

What is the primary purpose of the VerticalPager and HorizontalPager composables in Jetpack Compose?

To display lists of data with infinite scrolling.

To enable paging through content using swipe gestures.

To manage asynchronous data loading.

To create complex nested layouts with multiple columns.

None

13.

When using animateScrollToPage(), from where should it be called?

From the onCreate() method of an Activity.

Directly in the Composable function.

In the XML layout file.

From within a coroutine.

None

14.

What type of alignment is used in a VerticalPager for horizontal content alignment?

verticalAlignment

centerAlignment

horizontalAlignment

alignContent

None

15.

What is the role of the 'key' parameter in a pager?

It determines the animation style for page transitions.

It sets the default page size for the pager.

It helps Compose track page changes efficiently.

It defines the data type used in each page.

None

16.

What is the purpose of the 'pageContent' lambda in the pager composables?

It defines the content to be displayed on each page.

It controls the scroll behavior between pages.

It sets the size of each page.

It determines the animation speed of page transitions.

None

17.

What method should be used to navigate to a specific page with an animated transition?

snapToPage()

scrollToPosition()

animateScrollToPage()

scrollToPage()

None

18.

Which of the following statements is true about the VerticalPager composable?

It requires an XML layout to function.

It allows paging only in the horizontal direction.

It does not support programmatic scrolling.

It displays content that users can scroll vertically.

None

19.

Which alignment is used to center content vertically in a HorizontalPager?

gravityAlignment

centerAlignment

verticalAlignment

horizontalAlignment

None

20.

What does the 'beyondBoundsPageCount' property control?

The scroll speed between pages.

The height of each page in a VerticalPager.

The total number of pages in the pager.

The number of pages loaded outside the visible bounds.

None