Hello I’ve used this code to animate views while fragment replacement

transaction.addSharedElement(buttonSignIn, buttonSignIn.transitionName)
        .addSharedElement(socialSigninButtonContainer, socialSigninButtonContainer.transitionName)
        .addSharedElement(signInInputsContainer, signInInputsContainer.transitionName)
        .addSharedElement(textViewCopyright, textViewCopyright.transitionName)

val autoTransition = AutoTransition().also {
    it.interpolator = AccelerateInterpolator()
}
fragment.allowEnterTransitionOverlap = true
fragment.allowReturnTransitionOverlap = true
fragment.sharedElementEnterTransition = autoTransition

the problem is I want to add a fading out/in animation with sync with the sliding one

Will using an TransitionSet not help you?