You could start a Thread
where you would put something like this in it:
while (true) {
v.vibrate(500); // Half a second
sleep(10000); // Wait 10 seconds
}
But as this will run indefinitely, you'll need also to have some kind of condition or event in your Thread
to stop it under certain circumstances (for example, if an action happens, or if a BroadcastReceiver
signal triggers. More info here.
More info on stopping a Thread
here.