How to make custom progressBar's background to transparent?
<p>Got my custom progressBar here:</p>

<pre><code>&lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt;

&lt;item android:id="@android:id/background"&gt;
    &lt;shape&gt;
        &lt;corners android:radius="25dip" /&gt;

        &lt;gradient
            android:angle="90"
            android:endColor="#222222"
            android:startColor="#222222" /&gt;

        &lt;stroke
            android:width="1dp"
            android:color="#000" /&gt;
    &lt;/shape&gt;
&lt;/item&gt;
&lt;item android:id="@android:id/progress"&gt;
    &lt;clip&gt;
        &lt;shape&gt;
            &lt;corners android:radius="25dip" /&gt;

            &lt;gradient
                android:angle="90"
                android:endColor="#b32730"
                android:startColor="#aa2226" /&gt;

            &lt;stroke
                android:width="1dp"
                android:color="#000" /&gt;
        &lt;/shape&gt;
    &lt;/clip&gt;
&lt;/item&gt;
</code></pre>

<p></p>

<p>I would like to set the background to a little transparent.</p>

<p>I heard i can make transpernt colors by 8 digit color codes like this:</p>

<p>#00123123 is the fully transparent and #ff123123 is the fully opaque, but nothing changes, i tried it many times.</p>

<p>Any ideas ?</p>
