android.support.constraint

This package is part of the Android support library which is no longer maintained. The Constraint Layout support library has been superseded by the AndroidX Constraint Layout library, which is part of Jetpack. We recommend using the AndroidX libraries in all new projects. You should also consider migrating existing projects to AndroidX.

Classes

Barrier	Added in 1.1 A Barrier references multiple widgets as input, and creates a virtual guideline based on the most extreme widget on the specified side.
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.
ConstraintProperties	Added in 2.0 ConstraintProperties provides an easy to use api to update the layout params of ConstraintLayout children
ConstraintsChangedListener	Added in 2.0 Callbacks on state change
ConstraintSet	This class allows you to define programmatically a set of constraints to be used with ConstraintLayout.
Group	Added in 1.1 This class controls the visibility of a set of referenced widgets.
Guideline	Utility class representing a Guideline helper object for ConstraintLayout.
Placeholder	Added in 1.1 A Placeholder provides a virtual object which can position an existing object.

• Classes

  • Barrier
  • ConstraintLayout
  • ConstraintLayout.LayoutParams
  • ConstraintProperties
  • ConstraintsChangedListener
  • ConstraintSet
  • Group
  • Guideline
  • Placeholder