Instance Method

addConstraint(_:)

Adds the specified constraint to the layer.

Declaration

func addConstraint(_ c: CAConstraint)

Parameters

aConstraint

The constraint object to add to the receiver’s array of constraint objects.

Discussion

In macOS, you typically add constraints to a layer to manage the size and position of that layer’s sublayers. Before constraints can be applied, you must also assign a CAConstraintLayoutManager object to the layoutManager property of the layer. For more information about managing layer-based constraints, see Core Animation Programming Guide.

iOS apps do not support layer-based constraints.

See Also

Managing Layer Constraints

var constraints: [CAConstraint]?

The constraints used to position current layer’s sublayers.

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