Instance Method

addSubview(_:)

Adds a view to the end of the receiver’s list of subviews.

Declaration

func addSubview(_ view: UIView)

Parameters

view

The view to be added. After being added, this view appears on top of any other subviews.

Discussion

This method establishes a strong reference to view and sets its next responder to the receiver, which is its new superview.

Views can have only one superview. If view already has a superview and that view is not the receiver, this method removes the previous superview before making the receiver its new superview.

See Also

Managing the View Hierarchy

var superview: UIView?

The receiver’s superview, or nil if it has none.

var subviews: [UIView]

The receiver’s immediate subviews.

var window: UIWindow?

The receiver’s window object, or nil if it has none.

func bringSubview(toFront: UIView)

Moves the specified subview so that it appears on top of its siblings.

func sendSubview(toBack: UIView)

Moves the specified subview so that it appears behind its siblings.

func removeFromSuperview()

Unlinks the view from its superview and its window, and removes it from the responder chain.

func insertSubview(UIView, at: Int)

Inserts a subview at the specified index.

func insertSubview(UIView, aboveSubview: UIView)

Inserts a view above another view in the view hierarchy.

func insertSubview(UIView, belowSubview: UIView)

Inserts a view below another view in the view hierarchy.

func exchangeSubview(at: Int, withSubviewAt: Int)

Exchanges the subviews at the specified indices.

func isDescendant(of: UIView)

Returns a Boolean value indicating whether the receiver is a subview of a given view or identical to that view.