Instance Method

drawHierarchy(in:afterScreenUpdates:)

Renders a snapshot of the complete view hierarchy as visible onscreen into the current context.

Declaration

func drawHierarchy(in rect: CGRect, afterScreenUpdates afterUpdates: Bool) -> Bool

Parameters

rect

A rectangle specified in the local coordinate system (bounds) of the view.

afterUpdates

A Boolean value that indicates whether the snapshot should be rendered after recent changes have been incorporated. Specify the value false if you want to render a snapshot in the view hierarchy’s current state, which might not include recent changes.

Return Value

Returns true if the snapshot is complete, or false if the snapshot is missing image data for any view in the hierarchy.

Discussion

Use this method when you want to apply a graphical effect, such as a blur, to a view snapshot. This method is not as fast as the snapshotView(afterScreenUpdates:) method.

See Also

Related Symbols

func snapshotView(afterScreenUpdates: Bool)

Returns a snapshot view based on the contents of the current view.