Call OnDraw in another method, then "refresh" that call in ANOTHER method
<p>Hopefully this will actually make sense and sorry if its a stupid / obvious question. Basically I'm calling the onDraw method like so...</p>

<pre><code>    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    Preview mPreview = new Preview(this); 
    DrawOnTop mDraw = new DrawOnTop(this);  setContentView(mPreview); 
    addContentView(mDraw, new LayoutParams 
    (LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
</code></pre>

<p>You see I'm drawing it on top of a Camera view and the information being drawn is subject to change. I have a listener setup which will update the variables being drawn at the appropriate time but I now want to "refresh" this draw in that listener. How would I do such a thing?</p>
