title: Android - take picture on paused preview
body: <p>I have a camera preview that I have successfully been able to take pictures from using  <code>Camera.takePicture()</code>.<br>
  However now I am adding a separate option to pause the preview on demand currently by simply calling <code>camera.stopPreview()</code> However I still want be able to capture what is on the screen (but not my controls, buttons etc).<br>
  Is there anyway of doing that or another way <code>to pause/freeze the camera</code>?    </p>