public void unregister(int i) {
if (user_profiles[i] == null
|| user_profiles[i].username.equals("")
|| user_profiles[i].realm.equals("")) return;
RegisterAgent ra = ras[i];
if (ra != null && ra.unregister()) {
Receiver.alarm(0, LoopAlarm.class);
Receiver.onText(
Receiver.REGISTER_NOTIFICATION + i,
getUIContext().getString(R.string.reg),
R.drawable.sym_presence_idle,
0);
wl[i].acquire();
} else Receiver.onText(Receiver.REGISTER_NOTIFICATION + i, null, 0, 0);
}
