NSLayoutAnchor<AnchorType> Class
Definition
Important
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Generates NSLayoutConstraint objects based on the value of the NSLayoutConstraint associated with this.
[Foundation.Register("NSLayoutAnchor", true)]
public class NSLayoutAnchor<AnchorType> : Foundation.NSObject, Foundation.INSCoding, Foundation.INSCopying, IDisposable where AnchorType : NSObject[<Foundation.Register("NSLayoutAnchor", true)>]
type NSLayoutAnchor<'AnchorType (requires 'AnchorType :> NSObject)> = class
inherit NSObject
interface INSCoding
interface INativeObject
interface IDisposable
interface INSCopyingType Parameters
- AnchorType
Whether the generating anchor is an NSLayoutXAxisAnchor, an NSLayoutYAxisAnchor, or an NSLayoutDimension.
- Inheritance
- Derived
- Attributes
- Implements
Remarks
The NSLayoutAnchor<AnchorType> class, introduced in iOS 9, allows layout constraints to be specified in code, in a fluent manner. For example:
blueView = new ContentView(UIColor.Blue);
view.AddSubview(blueView);
blueView.TranslatesAutoresizingMaskIntoConstraints = false;
var blueConstraints = new []
{
blueView.LeadingAnchor.ConstraintEqualTo(greenView.LeadingAnchor),
blueView.TrailingAnchor.ConstraintEqualTo(greenView.TrailingAnchor),
blueView.TopAnchor.ConstraintEqualTo(greenView.BottomAnchor, 10.0f),
blueView.HeightAnchor.ConstraintEqualTo(greenView.HeightAnchor),
blueView.WidthAnchor.ConstraintEqualTo(greenView.WidthAnchor)
};
NSLayoutConstraint.ActivateConstraints(blueConstraints);
In this example, the newly-created blueViewNSView has its height, width, leading, and trailing anchors defined as equal to that of a previously-defined greenView while its TopAnchor is set to be 10 logical pixels below the greenView's BottomAnchor.
Constructors
| Name | Description |
|---|---|
| NSLayoutAnchor<AnchorType>(NativeHandle) |
A constructor used when creating managed representations of unmanaged objects. Called by the runtime. |
| NSLayoutAnchor<AnchorType>(NSCoder) |
A constructor that initializes the object from the data stored in the unarchiver object. |
| NSLayoutAnchor<AnchorType>(NSObjectFlag) |
Constructor to call on derived classes to skip initialization and merely allocate the object. |
Properties
| Name | Description |
|---|---|
| Class | (Inherited from NSObject) |
| ClassHandle |
The Objective-C class handle for this class. |
| ConstraintsAffectingLayout | |
| DebugDescription | (Inherited from NSObject) |
| Description | (Inherited from NSObject) |
| ExposedBindings | (Inherited from NSObject) |
| Handle |
Handle (pointer) to the unmanaged object representation. (Inherited from NSObject) |
| HasAmbiguousLayout | |
| IsDirectBinding | (Inherited from NSObject) |
| IsProxy | (Inherited from NSObject) |
| Item | |
| Name | |
| RetainCount | (Inherited from NSObject) |
| Self | (Inherited from NSObject) |
| Superclass | (Inherited from NSObject) |
| SuperHandle |
Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject) |
| Zone | (Inherited from NSObject) |