iOSLayoutConstraint

Class (inherits from Object)

Used to add new auto-layout constraints or modify existing ones.

Properties

Active Offset Scale FirstAttribute Priority SecondAttribute FirstItem Relation SecondItem

Shared Properties

StandardGap

Enumerations

AttributeTypes RelationTypes

Constructors

Constructor(firstItem As Object, firstAttribute As AttributeTypes, relation As RelationTypes, secondItem As Object, secondAttribute As AttributeTypes, multiplier As Double, addend As Double, priority As Double = 1000) Constructor(firstItem As Object, firstAttribute As AttributeTypes, relation As RelationTypes, secondItem As Object, secondAttribute As AttributeTypes, multiplier As Double, gap As StandardGap, priority As Double = 1000)

Example Code

This example adds a new button and constraints to the screen.

Var button As New MobileButton
button.Caption = "OK"
me.AddControl button

// Applying constraints to the screen (Screen1), so they set the position and size of the button when displayed
// (size and position = centered with a margin of 50 points from the parent view edges)

Var RightC As New iOSLayoutConstraint(button,iOSLayoutConstraint.AttributeTypes.Right, iOSLayoutConstraint.RelationTypes.Equal, _
self, iOSLayoutConstraint.AttributeTypes.Right,1.0,-50)

Var LeftC As New iOSLayoutConstraint(button,iOSLayoutConstraint.AttributeTypes.left, iOSLayoutConstraint.RelationTypes.Equal, _
self, iOSLayoutConstraint.AttributeTypes.Left,1.0,50)

Var TopC As New iOSLayoutConstraint(button,iOSLayoutConstraint.AttributeTypes.Top, iOSLayoutConstraint.RelationTypes.Equal, _
self, iOSLayoutConstraint.AttributeTypes.Top,1.0,50)

Var BottomC As New iOSLayoutConstraint(button,iOSLayoutConstraint.AttributeTypes.Bottom, iOSLayoutConstraint.RelationTypes.Equal, _
self, iOSLayoutConstraint.AttributeTypes.bottom,1.0,-50)

me.AddConstraint RightC
me.AddConstraint LeftC
me.AddConstraint TopC
me.AddConstraint BottomC

See Also

MobileScreen class; UserGuide:iOS Auto Layout topic