slidingdrawer contents overlapped with the view
<p>when i tap the handler the slidingdrawer is brought up but its contents are transparent i can see both the content and the listview.the listview is not hidden.</p>

<p>here is my layout xml:</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" &gt;

    &lt;ListView
        android:id="@+id/lvq"
        android:layout_width="match_parent"
        android:layout_height="match_parent" &gt;
    &lt;/ListView&gt;


    &lt;SlidingDrawer
        android:id="@+id/slidingDrawer1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignBottom="@+id/lvq"
        android:layout_alignTop="@+id/lvq"
        android:content="@+id/content"
        android:handle="@+id/handle" &gt;

        &lt;Button
            android:id="@+id/handle"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="History" /&gt;

        &lt;LinearLayout
            android:id="@+id/content"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical" &gt;
        &lt;/LinearLayout&gt;
    &lt;/SlidingDrawer&gt;

&lt;/RelativeLayout&gt;
</code></pre>

<p>thanks in advance!</p>
