LinearLayout locationLL = (LinearLayout) findViewById(R.id.locationLL);LinearLayout baseLL = (LinearLayout) findViewById(R.id.baseLL);private void flipit() { Interpolator accelerator = new AccelerateInterpolator(); Interpolator decelerator = new DecelerateInterpolator();    final LinearLayout visibleList,invisibleList;    final ObjectAnimator visToInvis, invisToVis;    if (locationLL.getVisibility() == View.GONE) {      visibleList = baseLL;      invisibleList = locationLL;      visToInvis = ObjectAnimator.ofFloat(visibleList, "rotationY", 0f, 90f);      invisToVis = ObjectAnimator.ofFloat(invisibleList, "rotationY", -90f, 0f);    } else {      invisibleList = baseLL;      visibleList = locationLL;      visToInvis = ObjectAnimator.ofFloat(visibleList, "rotationY", 0f, -90f);      invisToVis = ObjectAnimator.ofFloat(invisibleList, "rotationY", 90f, 0f);    }    visToInvis.setDuration(300);    invisToVis.setDuration(300);    visToInvis.setInterpolator(accelerator);    invisToVis.setInterpolator(decelerator);    visToInvis.addListener(new AnimatorListenerAdapter() {      @Override      public void onAnimationEnd(Animator anim) {        visibleList.setVisibility(View.GONE);        invisToVis.start();        invisibleList.setVisibility(View.VISIBLE);      }    });    visToInvis.start();}