# androidx.constraintlayout.core.dsl # androidx.constraintlayout.core.dsl *** ** * ** *** Kotlin\|[Java](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/package-summary "View this page in Java") ## Classes |----------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Barrier](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Barrier) | | | [Chain](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Chain) | | | [Chain.Anchor](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Chain.Anchor) | | | [Constraint](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint) | Provides the API for creating a Constraint Object for use in the Core ConstraintLayout \&MotionLayout system | | [Constraint.Anchor](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.Anchor) | | | [Constraint.HAnchor](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.HAnchor) | | | [Constraint.VAnchor](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.VAnchor) | | | [ConstraintSet](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/ConstraintSet) | Provides the API for creating a ConstraintSet Object for use in the Core ConstraintLayout \&MotionLayout system | | [Guideline](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Guideline) | | | [HChain](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/HChain) | | | [HChain.HAnchor](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/HChain.HAnchor) | | | [Helper](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Helper) | | | [Helper.HelperType](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Helper.HelperType) | | | [KeyAttribute](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyAttribute) | Provides the API for creating a KeyAttribute Object for use in the Core ConstraintLayout \&MotionLayout system | | [KeyAttributes](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyAttributes) | Provides the API for creating a KeyAttribute Object for use in the Core ConstraintLayout \&MotionLayout system This allows multiple KeyAttribute positions to defined in one object. | | [KeyCycle](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyCycle) | | | [KeyCycles](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyCycles) | Provides the API for creating a KeyCycle Object for use in the Core ConstraintLayout \&MotionLayout system This allows multiple KeyCycle positions to defined in one object. | | [KeyFrames](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyFrames) | Provides the API for creating a KeyFrames Object for use in the Core ConstraintLayout \&MotionLayout system KeyFrames is a container for KeyAttribute,KeyCycle,KeyPosition etc. | | [KeyPosition](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyPosition) | Provides the API for creating a KeyPosition Object for use in the Core ConstraintLayout \&MotionLayout system | | [KeyPositions](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyPositions) | Provides the API for creating a KeyPosition Object for use in the Core ConstraintLayout \&MotionLayout system This allows multiple KeyPosition positions to defined in one object. | | [Keys](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Keys) | This is the base Key for all the key (KeyCycle, KeyPosition, etc.) Objects | | [MotionScene](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/MotionScene) | This defines to MotionScene container It contains ConstraintSet and Transitions | | [OnSwipe](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/OnSwipe) | Create automatic swipe handling object | | [Ref](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Ref) | | | [Transition](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Transition) | Create a Transition Object. | | [VChain](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/VChain) | | | [VChain.VAnchor](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/VChain.VAnchor) | | | [VGuideline](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/VGuideline) | | ## Enums |----------------------------------------------------------------------------------------------------------------------------------------|---| | [Chain.Style](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Chain.Style) | | | [Constraint.Behaviour](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.Behaviour) | | | [Constraint.ChainMode](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.ChainMode) | | | [Constraint.HSide](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.HSide) | | | [Constraint.Side](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.Side) | | | [Constraint.VSide](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Constraint.VSide) | | | [Helper.Type](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Helper.Type) | | | [KeyAttribute.Fit](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyAttribute.Fit) | | | [KeyAttribute.Visibility](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyAttribute.Visibility) | | | [KeyAttributes.Fit](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyAttributes.Fit) | | | [KeyAttributes.Visibility](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyAttributes.Visibility) | | | [KeyCycle.Wave](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyCycle.Wave) | | | [KeyCycles.Wave](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyCycles.Wave) | | | [KeyPosition.Type](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyPosition.Type) | | | [KeyPositions.Type](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyPositions.Type) | | | [OnSwipe.Boundary](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/OnSwipe.Boundary) | | | [OnSwipe.Drag](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/OnSwipe.Drag) | | | [OnSwipe.Mode](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/OnSwipe.Mode) | | | [OnSwipe.Side](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/OnSwipe.Side) | | | [OnSwipe.TouchUp](https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/OnSwipe.TouchUp) | |