title: Place Snackbar at highest z order to avoid from being blocked by AutoCompleteTextView drop down
body: <p>I have a <code>Snackbar</code> which is as follows:</p>
  
  <p><a href="https://i.stack.imgur.com/67o9G.png" rel="noreferrer"><img src="https://i.stack.imgur.com/67o9G.png" alt="enter image description here"></a></p>
  
  <p>However, if the drop down of the <code>AutoCompleteTextView</code> is too long, the drop down will block the <code>Snackbar</code>.</p>
  
  <p><a href="https://i.stack.imgur.com/q4VFx.png" rel="noreferrer"><img src="https://i.stack.imgur.com/q4VFx.png" alt="enter image description here"></a></p>
  
  <p><strong>As you can see in the above image, the <code>Snackbar</code> is actually showing. However, its visibility is blocked by the long drop down. You can see from the above image</strong></p>
  
  <p>I try to use the following <code>Snackbar code</code>. Adding <code>bringToFront()</code> doesn't help much.</p>
  
  <pre><code>private void showSnackbar(String message) {
      Snackbar snackbar
              = Snackbar.make(getActivity().findViewById(R.id.content), message, Snackbar.LENGTH_LONG);
      snackbar.getView().bringToFront();
      snackbar.show();
  }
  </code></pre>
  
  <p><code>R.id.content</code> is a <code>CoordinatorLayout</code>:</p>
  
  <pre><code>    &lt;android.support.design.widget.CoordinatorLayout
          android:id="@+id/content"
          android:background="?attr/MyActivityBackground"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:foreground="?attr/headerShadow" /&gt;
  </code></pre>
  
  <p>Is there any good way, to avoid <code>Snackbar</code> from being covered by <code>AutoCompleteTextView</code>'s drop down?</p>