public void start() {
listener = new ProximityListener();
lastProximityInfo = new ProximityInfo();
if (Sensor_Proximity.isAvailable()) {
proximityAvailable = true;
} else {
proximityAvailable = false;
}
Sensor_Proximity.addListener(listener, period);
super.start();
}
void stop(StopCode stopCode) {
Sensor_Proximity.removeListener(listener);
super.stop(stopCode);
}