UIView

class UIView : UIResponder, NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate

  • Adds the given subview into the receiver, and adds constraint so that its top, bottom, left and right’s edges are bounds to its superview’s edges.

    Declaration

    Swift

    public func addAndFitSubview(_ view: UIView)

  • Take a snapshot of the view and returns a UIImage.

    Note

    The returns is an implicitely unwrapped optional for backward-compatibility purpose, and will be made an optional in a future release (as well as not crash)

    Declaration

    Swift

    public func snapshotImage(afterScreenUpdates: Bool = true) -> UIImage!

    Parameters

    afterScreenUpdates

    Please refer to the documentation for afterScreenUpdates in UIView.drawHierarchy(in:, afterScreenUpdates:) for more info.

    Return Value

    The image if it could be generated. If it couldn’t, for example if the UIView‘s width or height is 0, a crash will happen at runtime.