title: ListPopupWindow menu popup animation direction from left to right
body: <p>I have a ListPopupMenu with code as below</p>
  
  <pre><code>public void showPopupMenu(View view) {
      ListPopupWindow listPopupWindow = new ListPopupWindow(getActivity());
      listPopupWindow.setAdapter(new CollectionItemMenuAdapter(getActivity(), popupMenuList));
      listPopupWindow.setWidth((int) getResources().getDimension(R.dimen.menu_width));
      listPopupWindow.setHeight(WRAP_CONTENT);
      listPopupWindow.setVerticalOffset((int) getResources().getDimension(R.dimen.menu_vertical_offset));
      listPopupWindow.setHorizontalOffset((int) getResources().getDimension(R.dimen.menu_horizontal_offset));
  
      listPopupWindow.setAnchorView(view);
      listPopupWindow.show();
  }
  </code></pre>
  
  <p>The result is as below, when click on the setting (in the gif, the first one), the popup menu appear. </p>
  
  <p><a href="https://i.stack.imgur.com/cCiOH.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cCiOH.gif" alt="enter image description here"></a></p>
  
  <p>However the menu animation appears from Right to Left. I would prefer it to show from Left to Right (like appearing from the setting button). Could I achieve that without creating a custom animation for it?</p>
  
  <p>p/s: I tried custom animation using <code>listPopupWindow.setAnimationStyle(...)</code>, also not working</p>