title: my navigation drawer shows below my gridview
body: <p>the other day , i create a navigation drawer of the android examples , but this shows below my gridview.</p>
  
  <p><img src="https://i.stack.imgur.com/Hk9NM.jpg" alt="enter image description here"></p>
  
  <p>The code is from the example , I dont know what happend</p>
  
  <p>fragment_navigation_drawer.xml</p>
  
  <pre><code>&lt;ListView xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="#f3f3f3"
  android:choiceMode="singleChoice"
  android:divider="@android:color/transparent"
  android:dividerHeight="0dp"
  tools:context="es.example.NavigationDrawerFragment" /&gt;
  </code></pre>
  
  <p>fragment_drawer.xml</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingBottom="@dimen/activity_vertical_margin"
  android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  tools:context="es.example.MainActivity$PlaceholderFragment"
  android:background="#f3f3f3" &gt;
  &lt;GridView
      android:id="@+id/lst"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:columnWidth="120dp"
      android:numColumns="auto_fit"
      android:layout_marginLeft=".5dp"
      android:layout_marginTop=".5dp"
      android:stretchMode="columnWidth"
      android:gravity="center"
      android:text="" /&gt;
  &lt;ProgressBar
      android:id="@+id/progressBar1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerHorizontal="true"
      android:layout_centerVertical="true" /&gt;
  </code></pre>
  
  <p></p>