Android Animation: Fade Out (Kotlin)

Solution 1: AnimationSet

val fadeOut = AlphaAnimation(1f, 0f)fadeOut.interpolator = AccelerateInterpolator()fadeOut.duration = 1000val animation = AnimationSet(false)/*animation.setAnimationListener(object: Animation.AnimationListener {    override fun onAnimationRepeat(animation: Animation?) {    }    override fun onAnimationEnd(animation: Animation?) {        view.isVisible = false    }    override fun onAnimationStart(animation: Animation?) {    }}) */animation.addAnimation(fadeOut)view.startAnimation(animation)view.isVisible = false

Solution 2: XML

Create res/anim/fade_out.xml.

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
     android:shareInterpolator="false">
    <alpha android:fromAlpha="1.0"
           android:toAlpha="0.0"
           android:duration="1000"
           android:interpolator="@android:anim/accelerate_interpolator"
            />
</set>

view.startAnimation(AnimationUtils.loadAnimation(context, R.anim.fade_out))view.isVisible = false

Solution 3: ObjectAnimator

ObjectAnimator.ofFloat(view, View.ALPHA, 1f, 0f).setDuration(1000).start()

val animator = ObjectAnimator.ofFloat(view, View.ALPHA, 1f, 0f)animator.interpolator = AccelerateInterpolator()animator.duration = 1000animator.start()

Soltion 4: animate

view.animate().alpha(0f).setDuration(1000).setInterpolator(AccelerateInterpolator()).start()