Called to notify the view controller that its view is about to layout its subviews.
SDKs
Framework
func viewWillLayoutSubviews()
When a view's bounds change, the view adjusts the position of its subviews. Your view controller can override this method to make changes before the view lays out its subviews. The default implementation of this method does nothing.
var safeThe layout guide describing the unobscured portion of the screen.
var additionalCustom insets that you specify to modify the view controller's safe area.
var systemThe minimum layout margins defined by the system.
var viewA Boolean value indicating whether the view controller's view uses the system-defined minimum layout margins.
var edgesThe extended edges to use for the layout.
var extendedA Boolean value indicating whether or not the extended layout includes opaque bars.
func viewCalled to notify the view controller that its view has just laid out its subviews.
func viewCalled to notify the view controller that the layout margins of its view changed.
func viewCalled to notify the view controller that its safe area insets changed.
func updateCalled when the view controller's view needs to update its constraints.