Remove focus from the current activity
<p>How would i remove the focus from an activity which has just being installed/started, </p>

<p>so the user's focus will remine on the previouse one? 
(while the new activity remine in the stack and will work in the background)</p>

<p>the prob is that when i start this new background activity, until i wont press back or home, the ui is stuck. and i would like to fix that some how</p>

<p>thanks,</p>

<p>ray.</p>
