title: No response from setOnMapLongClickListener
body: <p>Android Studio 3.0.1. Google maps appCompat mode.</p>
  
  <p>I am trying to toggle the ActionBar (Menu) on or off to display more of the map but the code below is not working; in fact the map does not even appear. What is wrong please?</p>
  
  <pre><code> ActionBar ab = getSupportActionBar();  
   .
   .
   map.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {
         @Override
         public void onMapLongClick(LatLng latLng) {
              Toast.makeText(getApplicationContext(), "Long CLICK",  Toast.LENGTH_LONG).show();
              if (ab.isShowing()) {
                  ab.hide();
              } else {
                  ab.show();
              }
            }
      });
  </code></pre>
  
  <p>I cannot get a response from the above when trying a long tap to hide/show the menu bar. 
  There is also a <em>setOnMapClickListener</em> after this which works perfectly.</p>