Compose Draggable Anchor Quiz

Welcome to the “Working with Anchored Draggable Components” quiz! This quiz is designed to test your understanding of implementing anchored draggable components in Jetpack Compose. You’ll encounter questions that cover key concepts, including draggable states, anchor points, thresholds, and how to use the anchoredDraggable modifier. Through these questions, you’ll review essential techniques for creating interactive components that smoothly transition between defined positions in your Android apps.

How is the current drag offset obtained in Compose's draggable components?

Using the getOffset() function.

By accessing the offset parameter directly.

With the state’s requiredOffset() method.

Through the pointerInput() function.

None

Which modifier is used to detect drag gestures in anchored draggable components?

draggable()

anchoredDraggable()

clickable()

pointerInput()

None

What does the AnchoredDraggableState's 'requireOffset()' method return?

The color of the draggable component.

The size of the draggable component.

The position of the anchor points.

The current drag offset along the specified axis.

None

Which of the following is NOT a use case for anchored draggable components?

Designing a volume slider that snaps to specific positions.

Implementing a sliding drawer in a UI.

Creating a component that moves freely in any direction.

Creating a custom horizontal scroll bar.

None

What is the role of the 'orientation' parameter in anchoredDraggable()?

It sets the color of the draggable component.

It adjusts the velocity of the dragging motion.

It determines the size of the anchor points.

It defines whether dragging should occur horizontally or vertically.

None

What is the purpose of the threshold in anchored draggable components?

To decide whether the component should return to the starting point or move to the destination anchor.

To determine the speed of the dragging gesture.

To set the maximum distance a component can be dragged.

To define the minimum size of the draggable component.

None

What does the animationSpec parameter in AnchoredDraggableState control?

The speed of drag animations.

The threshold position.

The size of the draggable component.

The orientation of drag gestures.

None

Which method is used to animate the movement of a draggable component?

gestureAnimation()

offsetAnimation()

animatorMove()

tween()

None

What is the purpose of the AnchoredDraggableState's 'velocityThreshold'?

To determine the drag direction.

To define the speed required to transition to a different anchor state.

To limit the number of draggable components.

To set the color of the draggable item.

None

10.

What are anchored draggable components?

Components that can be dragged along a path with fixed anchor points.

Components that can be dragged freely anywhere on the screen.

Components that only respond to multi-touch gestures.

Components that respond to clicks but do not support dragging.

None

11.

What function is used to store the state of draggable components during recomposition?

remember()

rememberDraggableState()

draggableState()

saveState()

None

12.

Which of the following parameters is optional when creating an AnchoredDraggableState?

positionalThreshold

initialValue

anchors

velocityThreshold

None

13.

How can you control the direction in which a draggable component moves?

By using the direction property.

By defining the movementPath property.

By setting the reverseDirection parameter in anchoredDraggable().

By changing the velocityThreshold parameter.

None

14.

How are draggable anchor points defined in Compose?

With the gestureDetect() function.

Using the anchorPoints() function.

By specifying pixel values directly in the draggable state.

Using the DraggableAnchors factory with floating-point values.

None

15.

What is the purpose of the 'DraggableAnchors' factory?

To define anchor points for draggable components.

To manage click events for draggable components.

To change the color of draggable components.

To set the size of draggable components.

None

16.

What does the 'reverseDirection' parameter in anchoredDraggable() do?

Reverses the orientation of the drag gesture.

Changes the direction of movement when dragging.

Adjusts the threshold value.

Reverses the component’s appearance.

None

17.

Which parameter in AnchoredDraggableState allows smooth transitions between anchors?

draggablePath

animationSpec

dragVelocity

smoothScroll

None

18.

What is the 'positionalThreshold' used for in AnchoredDraggableState?

To define the size of the component.

To determine the color of the draggable item.

To set the starting position of the draggable component.

To calculate the threshold point between two anchors.

None

19.

What is the initialValue parameter in AnchoredDraggableState used for?

To specify the speed of the drag gesture.

To set the initial color of the component.

To define the initial anchor position where the draggable component will start.

To configure the size of the draggable area.

None