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Last updated 2025-05-15 UTC.
[null,null,["Last updated 2025-05-15 UTC."],[],[],null,["# androidx.constraintlayout.core.state\n====================================\n\n*** ** * ** ***\n\n[Kotlin](/reference/kotlin/androidx/constraintlayout/core/state/package-summary \"View this page in Kotlin\") \\|Java\n\nInterfaces\n----------\n\n|--------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------|\n| [ConstraintReference.ConstraintReferenceFactory](/reference/androidx/constraintlayout/core/state/ConstraintReference.ConstraintReferenceFactory) | |\n| [CoreMotionScene](/reference/androidx/constraintlayout/core/state/CoreMotionScene) | This defines the interface to motionScene functionality |\n| [CorePixelDp](/reference/androidx/constraintlayout/core/state/CorePixelDp) | |\n| [Interpolator](/reference/androidx/constraintlayout/core/state/Interpolator) | |\n| [Reference](/reference/androidx/constraintlayout/core/state/Reference) | |\n| [RegistryCallback](/reference/androidx/constraintlayout/core/state/RegistryCallback) | |\n\nClasses\n-------\n\n|----------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------|\n| [ConstraintReference](/reference/androidx/constraintlayout/core/state/ConstraintReference) | |\n| [ConstraintSetParser](/reference/androidx/constraintlayout/core/state/ConstraintSetParser) | |\n| [ConstraintSetParser.DesignElement](/reference/androidx/constraintlayout/core/state/ConstraintSetParser.DesignElement) | |\n| [ConstraintSetParser.LayoutVariables](/reference/androidx/constraintlayout/core/state/ConstraintSetParser.LayoutVariables) | Provide the storage for managing Variables in the system. |\n| [Dimension](/reference/androidx/constraintlayout/core/state/Dimension) | Represents a dimension (width or height) of a constrained widget |\n| [HelperReference](/reference/androidx/constraintlayout/core/state/HelperReference) | |\n| [Registry](/reference/androidx/constraintlayout/core/state/Registry) | |\n| [State](/reference/androidx/constraintlayout/core/state/State) | Represents a full state of a ConstraintLayout |\n| [Transition](/reference/androidx/constraintlayout/core/state/Transition) | |\n| [Transition.WidgetState](/reference/androidx/constraintlayout/core/state/Transition.WidgetState) | |\n| [TransitionParser](/reference/androidx/constraintlayout/core/state/TransitionParser) | Contains code for Parsing Transitions |\n| [WidgetFrame](/reference/androidx/constraintlayout/core/state/WidgetFrame) | Utility class to encapsulate layout of a widget |\n\nEnums\n-----\n\n|------------------------------------------------------------------------------------------------------------------------------------------|---|\n| [ConstraintSetParser.MotionLayoutDebugFlags](/reference/androidx/constraintlayout/core/state/ConstraintSetParser.MotionLayoutDebugFlags) | |\n| [Dimension.Type](/reference/androidx/constraintlayout/core/state/Dimension.Type) | |\n| [State.Chain](/reference/androidx/constraintlayout/core/state/State.Chain) | |\n| [State.Constraint](/reference/androidx/constraintlayout/core/state/State.Constraint) | |\n| [State.Direction](/reference/androidx/constraintlayout/core/state/State.Direction) | |\n| [State.Helper](/reference/androidx/constraintlayout/core/state/State.Helper) | |\n| [State.Wrap](/reference/androidx/constraintlayout/core/state/State.Wrap) | |"]]
