NSLayoutConstraint.ActivateConstraints(NSLayoutConstraint[]) 方法

定义

命名空间:

UIKit

程序集:

Xamarin.iOS.dll

激活传递的所有约束。

[Foundation.Export("activateConstraints:")]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 8, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public static void ActivateConstraints (UIKit.NSLayoutConstraint[] constraints);

static member ActivateConstraints : UIKit.NSLayoutConstraint[] -> unit

参数

constraints

NSLayoutConstraint[]

要激活的约束。

属性

ExportAttribute IntroducedAttribute

注解

此方法的效果与将 属性设置为 Activetrue相同。

var 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);