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.

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

rememberCoroutineScope()

createCoroutineScope()

launchNewScope()

CoroutineScopeProvider

None

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

It defines the scrolling direction of the pager.

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

It adjusts the page transition speed.

It sets the number of pages displayed simultaneously.

None

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

Displays pages in the opposite direction.

Disables user interactions with the pager.

Reverses the order of page numbers.

Inverts the colors of each page.

None

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

snapToPage()

scrollToPage()

animateScrollToPage()

scrollToPosition()

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?

A RecyclerView with a custom adapter.

An XML vector graphic for each image.

A drawable resource and an Image composable.

An XML layout file for each book cover.

None

Which property is mandatory when using VerticalPager or HorizontalPager composables?

state

modifier

pageSize

userScrollEnabled

None

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

To manage asynchronous data loading.

To create complex nested layouts with multiple columns.

To display lists of data with infinite scrolling.

To enable paging through content using swipe gestures.

None

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

centerAlignment

horizontalAlignment

verticalAlignment

alignContent

None

10.

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

It allows paging only in the horizontal direction.

It requires an XML layout to function.

It displays content that users can scroll vertically.

It does not support programmatic scrolling.

None

11.

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

It controls the scroll behavior between pages.

It sets the size of each page.

It defines the content to be displayed on each page.

It determines the animation speed of page transitions.

None

12.

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

Using the userScrollEnabled property.

By setting the modifier parameter.

Through the pageContent lambda.

By adjusting the state property.

None

13.

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

It defines the data type used in each page.

It helps Compose track page changes efficiently.

It determines the animation style for page transitions.

It sets the default page size for the pager.

None

14.

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

By passing the number of pages to the rememberPagerState function.

By using the size parameter in the VerticalPager or HorizontalPager.

By declaring the number of pages in the pageSize property.

By setting the pageCount property directly on the pager.

None

15.

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

From the onCreate() method of an Activity.

Directly in the Composable function.

From within a coroutine.

In the XML layout file.

None

16.

What does the 'beyondBoundsPageCount' property control?

The total number of pages in the pager.

The number of pages loaded outside the visible bounds.

The scroll speed between pages.

The height of each page in a VerticalPager.

None

17.

Which of the following is a valid use of pagerState?

Determining the current page number in a pager.

Defining the background color of a Button.

Controlling the alignment of items within a Row.

Adjusting the font size of Text composables.

None

18.

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

verticalAlignment

centerAlignment

gravityAlignment

horizontalAlignment

None

19.

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

It scrolls to a specific page with animation.

It adjusts the scroll speed of the pager.

It changes the page size dynamically.

It scrolls to a specific page instantly without animation.

None

20.

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

With the columns parameter set to StaggeredGridCells.Fixed.

Using the columnCount property.

By defining a fixed width for each page.

By setting the horizontalArrangement property.

None