ImageButton Not Visible
<p>Can someone please tell me why my <code>ImageButton</code> is not showing when I use this layout:</p>

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


    &lt;ImageButton
        android:id="@+id/continuebutton"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1.02"
        android:background="@android:color/transparent"
        android:src="@drawable/continuebutton"
        android:visibility="visible" /&gt;

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

<p>When I use a <code>LinearLayout</code>, it shows up just fine. Can anyone please clarify what I am doing wrong? </p>
