androidx.constraintlayout.widget | API reference

Interfaces

`ConstraintLayout.ValueModifier`	This is the interface to a valued modifier. implement this and add it using addValueModifier
`SharedValues.SharedValuesListener`	interface for listeners

`Barrier`	Added in 1.1
`ConstraintAttribute`	Defines non standard Attributes
`ConstraintHelper`	Added in 1.1
`ConstraintLayout`	A `ConstraintLayout` is a `android.view.ViewGroup` which allows you to position and size widgets in a flexible way.
`ConstraintLayout.LayoutParams`	This class contains the different attributes specifying how a view want to be laid out inside a `ConstraintLayout`.
`ConstraintLayoutStates`
`ConstraintLayoutStatistics`	This provide metrics of the complexity of the layout that is being solved.
`ConstraintProperties`	Added in 2.0
`ConstraintSet`	Defines a set of constraints to be used with `ConstraintLayout`.
`ConstraintSet.Constraint`
`ConstraintSet.Layout`
`ConstraintSet.Motion`
`ConstraintSet.PropertySet`
`ConstraintSet.Transform`
`Constraints`	This defines the internally defined Constraint set It allows you to have a group of References which point to other views and provide them with constraint attributes
`Constraints.LayoutParams`
`ConstraintsChangedListener`	Added in 2.0
`Group`	Control the visibility and elevation of the referenced views Added in 1.1
`Guideline`	Utility class representing a Guideline helper object for `ConstraintLayout`.
`Placeholder`	Added in 1.1
`ReactiveGuide`	Utility class representing a reactive Guideline helper object for `ConstraintLayout`.
`SharedValues`	Shared values
`StateSet`
`VirtualLayout`	Added in 2.0

ConstraintAttribute.AttributeType