title: Reduce Android toolbar height using xml
body: <p>I want my toolbar height reduced to 40dp, but the following code does not reflect the same:</p>
  
  <pre><code>&lt;android.support.v7.widget.Toolbar
      android:id="@+id/toolbar"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:minHeight="40dp"
      android:background="?attr/colorPrimary"
      app:layout_scrollFlags="scroll|enterAlways"
      app:popupTheme="@style/AppTheme.PopupOverlay"&gt;
  &lt;/android.support.v7.widget.Toolbar&gt;
  </code></pre>
  
  <p>What am I missing? </p>