UIView

Question 1

init(frame: CGRect)

Answer 1

Initializes and returns a newly allocated view object with the specified frame rectangle.

Question 2

var backgroundColor: UIColor?

Answer 2

The view’s background color.

Question 3

var IsHidden: Bool

Answer 3

A Boolean value that determines whether the view is hidden.

Question 4

var alpha: CGFloat

Answer 4

The view’s alpha value.

Question 5

var IsOpaque: Bool

Answer 5

A Boolean value that determines whether the view is opaque.

Question 6

var TintColor: UIColor!

Answer 6

The first nondefault tint color value in the view’s hierarchy, ascending from and starting with the view itself.

Question 7

var tintAdjustmentMode: UIView.TintAdjustmentMode

Answer 7

The first non-default tint adjustment mode value in the view’s hierarchy, ascending from and starting with the view itself.

Question 8

var clipsToBounds: Bool

Answer 8

A Boolean value that determines whether subviews are confined to the bounds of the view.

Question 9

var clearsContextBeforeDrawing: Bool

Answer 9

A Boolean value that determines whether the view’s bounds should be automatically cleared before drawing.

Question 10

var mask: UIView?

Answer 10

An optional view whose alpha channel is used to mask a view’s content.

Question 11

class var layerClass: AnyClass

Answer 11

Returns the class used to create the layer for instances of this class.

Question 12

var layer: CALayer

Answer 12

The view’s Core Animation layer used for rendering.

Question 13

var isUserInteractionEnabled: Bool

Answer 13

A Boolean value that determines whether user events are ignored and removed from the event queue.

Question 14

var isMultipleTouchEnabled: Bool

Answer 14

A Boolean value that indicates whether the view receives more than one touch at a time.

Question 15

var isExclusiveTouch: Bool

Answer 15

A Boolean value that indicates whether the receiver handles touch events exclusively.

Question 16

var frame: CGRect

Answer 16

The frame rectangle, which describes the view’s location and size in its superview’s coordinate system.

Question 17

var bounds: CGRect

Answer 17

The bounds rectangle, which describes the view’s location and size in its own coordinate system.

Question 18

var center: CGPoint

Answer 18

The center point of the view’s frame rectangle.

Question 19

var transform: CGAffineTransform

Answer 19

Specifies the transform applied to the view, relative to the center of its bounds.

Question 20

var superview: UIView?

Answer 20

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

Question 21

var subviews: [UIView]

Answer 21

The receiver’s immediate subviews.

Question 22

var window: UIWindow?

Answer 22

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

Question 23

func addSubview(UIView)

Answer 23

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

Question 24

func bringSubViewToFront (UIView)

Answer 24

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

Question 25

func sendSubviewToBack (UIView)

Answer 25

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

Question 26

func removeFromSuperview()

Answer 26

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

Question 27

func insertSubView(UIView, at: Int)

Answer 27

Inserts a subview at the specified index.

Question 28

func insertSubView(UIView, above Subview: UIView)

Answer 28

Inserts a view above another view in the view hierarchy.

Question 29

func insertSubview(UIView, below Subview: UIView)

Answer 29

Inserts a view below another view in the view hierarchy.

Question 30

func exchangeSubview(at: Int, with SubviewAt: Int)

Answer 30

Exchanges the subviews at the specified indices.

Question 31

func isDescendant(of: UIView) -> Bool

Answer 31

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

Question 32

func didAddSubview(UIView)

Answer 32

Tells the view that a subview was added.

Question 33

func willRemoveSubview(UIView)

Answer 33

Tells the view that a subview is about to be removed.

Question 34

func willMove(toSuperview: UIView?)

Answer 34

Tells the view that its superview is about to change to the specified superview.

Question 35

func didMoveToSuperView()

Answer 35

Tells the view that its superview changed.

Question 36

func willMove(toWindow: UIWindow?)

Answer 36

Tells the view that its window object is about to change.

Question 37

func didMoveToWindow()

Answer 37

Tells the view that its window object changed.

Question 38

var directionalLayoutMargins: NSDirectionalEdgeInsets

Answer 38

The default spacing to use when laying out content in a view, taking into account the current language direction.

Question 39

var layoutMargins: UIEdgeInsets

Answer 39

The default spacing to use when laying out content in the view.

Question 40

var preserveSuperviewLayoutMargins: Bool

Answer 40

A Boolean value indicating whether the current view also respects the margins of its superview.

Question 41

func layoutMarginsDidChange()

Answer 41

Notifies the view that the layout margins changed.

Question 42

var safeAreaInsets: UIEdgeInsets

Answer 42

The insets that you use to determine the safe area for this view.

Question 43

var safeAreaLayoutGuide: UILayout Guide

Answer 43

The layout guide representing the portion of your view that is unobscured by bars and other content.

Question 44

func safeAreaInsetsDidChange()

Answer 44

Called when the safe area of the view changes.

Question 45

var insetsLayoutMarginsFromSafeArea: Bool

Answer 45

A Boolean value indicating whether the view's layout margins are updated automatically to reflect the safe area.

Question 46

var constraints: [NSLayout Constraint]

Answer 46

The constraints held by the view.

Question 47

func addConstraint (NSLayout Constraint)

Answer 47

Adds a constraint on the layout of the receiving view or its subviews.

Question 48

func addConstraints([NSLayout Constraint])

Answer 48

Adds multiple constraints on the layout of the receiving view or its subviews.

Question 49

func removeConstraint(NSLayout Constraint)

Answer 49

Removes the specified constraint from the view.

Question 50

func removeConstraints([NSLayout Constraints])

Answer 50

Removes the specified constraints from the view.