UIView.AlignmentRectForFrame(CGRect) Method

Reference

Definition

Namespace:: UIKit

Assembly:: Xamarin.iOS.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns a customized alignment rectangle for Auto Layout.

[Foundation.Export("alignmentRectForFrame:")]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 6, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public virtual CoreGraphics.CGRect AlignmentRectForFrame (CoreGraphics.CGRect frame);

abstract member AlignmentRectForFrame : CoreGraphics.CGRect -> CoreGraphics.CGRect
override this.AlignmentRectForFrame : CoreGraphics.CGRect -> CoreGraphics.CGRect

Parameters

frame: CGRect

A RectangleF for which the alignment rectangle should be calculated.

Returns

CGRect

The alignment rectangle appropriate to the frame.

Attributes: ExportAttribute IntroducedAttribute

Remarks

By overriding this method, application developers can fully customize the alignment rectangle of the UIView.Application developers who override this method must also override the complementary method FrameForAlignmentRect(CGRect). The two methods must provide complementary values.

Auto Layout uses "alignment rectangles" to layout subviews rather than the subviews' Frame. The Frame of a UIView may include visual elements, such as drop-shadows, that are not symmetrical around the UIView's logical center. The "alignment rectangle" for a UIView should be related to its logical content.

By default, the "alignment rectangle" of a UIView is the Frame plus the AlignmentRectInsets. The AlignmentRectForFrame(CGRect) and FrameForAlignmentRect(CGRect) methods can be used to fully customize the alignment rectangle.

Applies to

共用方式為