Instance Method インスタンスメソッド

accessibilityScroll(_:)

Scrolls screen content in an application-specific way and returns the success or failure of the action.

Declaration 宣言 

func accessibilityScroll(_ direction: UIAccessibilityScrollDirection) -> Bool

Parameters パラメータ

direction

A constant that specifies the direction of the scrolling action. See UIAccessibilityScrollDirection for descriptions of valid constants.

Return Value 戻り値

true if the scrolling action succeeds; otherwise, false. By default, this method returns false.

Discussion 解説

Implement this method if a view in the view hierarchy supports a scroll by page action.

  • If the scrolling action succeeds for the specified direction, return true and post the pageScrolled notification.

  • If the scrolling action fails, accessibilityScroll: is called on a parent view in the hierarchy.

See Also 参照

Performing an Action

func accessibilityActivate() -> Bool
Tells the element to activate itself and report the success or failure of the operation.
func accessibilityIncrement()
Tells the accessibility element to increment the value of its content.
func accessibilityDecrement()
Tells the accessibility element to decrement the value of its content.
func accessibilityPerformEscape() -> Bool
Dismisses a modal view and returns the success or failure of the action.
func accessibilityPerformMagicTap() -> Bool
Performs a salient action.