RelativeLayout transparency with ListView below
<p>I have a relative layout with a transparent background. And a LinearLayout with a ListView below. The problem is, that I don't see my ListView below the transaprent RelativeLayout. Here's my xml:</p>

<pre><code> &lt;RelativeLayout
       android:id="@+id/layoutabove"
     android:background="#55000000"   
        android:layout_width="match_parent"
        android:layout_height="match_parent" &gt;

        &lt;Button
            android:id="@+id/loginbutton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:text="Login" /&gt;

        &lt;ImageView
            android:id="@+id/image"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:src="@drawable/myimage" /&gt;

    &lt;/RelativeLayout&gt;

&lt;LinearLayout 
    android:id="@+id/mainlayout"
    android:layout_width="fill_parent"
    android:background="#000000"
    android:layout_height="fill_parent"
    android:orientation="vertical" &gt;

     &lt;ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="fill_parent" &gt;

    &lt;/ListView&gt;

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

<p>It's just black background.</p>
