Fade in animation for fast splash usage

SimpleAnim.java

public void singleFadeInView(View v, long duration, final Consumer<Animation> onAnimEnd) {
        AlphaAnimation anim = new AlphaAnimation(1.0f, 0.0f);
        anim.setDuration(duration);
        anim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {}
            @Override
            public void onAnimationEnd(Animation animation) {
                onAnimEnd.accept(animation);
            }
            @Override
            public void onAnimationRepeat(Animation animation) {}
        });
        v.startAnimation(anim);
    }

SimpleAnim.kt

fun singleFadeInView(v: View, duration: Long, onAnimEnd: () -> Unit) {
    val anim = AlphaAnimation(0.0f, 1.0f)
    anim.duration = duration
    anim.setAnimationListener(object : Animation.AnimationListener {
        
        override fun onAnimationRepeat(animation: Animation?) {
        }

        override fun onAnimationEnd(animation: Animation?) {
            onAnimEnd()
        }

        override fun onAnimationStart(animation: Animation?) {
        }
    })
    v.startAnimation(anim)
}