ConsraintLayout-Animations

This is a sample project for animations which is created using constraint layout.

Animation-1	Animation-2

Quick Start of Animations :

1. Required two layout to animate

First layout, In which will show the initial views with initial position and In Second layout will add the views with end position which we want to animation.

2. Animation Logic

First, we need to create a new instance of ConstraintSet, Now clone the constraints of the second layout (second_layout.xml) by calling the clone() method:

val constraintSet = ConstraintSet()
constraintSet.clone(this, R.layout.second_layout)

Now, let’s create the transition object used to set the interpolator and the duration of animation:

val transition = ChangeBounds()
transition.interpolator = AnticipateOvershootInterpolator(1.0f)
transition.duration = 1200

And, In the last, we need to call the TransitionManager.beginDelayedTransition() used to create a new scene and to run the transition on the next rendering frame. Lastly, we call applyTo() to finally start the animation.

TransitionManager.beginDelayedTransition(constraint, transition)

constraintSet.applyTo(constraint)

Final Animation Code :

private fun startAnimation(){
        val constraintSet = ConstraintSet()
        constraintSet.clone(this, R.layout.second_layout)

        val transition = ChangeBounds()
        transition.interpolator = AnticipateOvershootInterpolator(1.0f)
        transition.duration = 1200

        TransitionManager.beginDelayedTransition(constraint, transition) // where `constraint` is : root element of layout
        constraintSet.applyTo(constraint)
    }