@Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
float value = Math.abs(x) + Math.abs(y) + Math.abs(z);
double cal = Math.sqrt(x * x + y * y + z * z);
double currentTime = System.currentTimeMillis();
// first time
if (lastCal == 0 && lastMag == 0) {
magStartTime = currentTime;
lastValue = value;
lastMag = currentTime; // last calibration time
lastBumpRecord = currentTime; // last bump recording time
lastCal = cal; // calibration
}
// first 5 seconds calibrate
if (currentTime - magStartTime < 5000) {
lastCal = (lastCal + cal) / 2;
lastMag = currentTime;
lastValue = value;
return;
}
// it's bump
if (currentTime - lastBumpRecord > 999) {
if (cal > 2 * lastCal) {
if (!isBump) {
isBump = true;
// if(currentTime - lastBumpRecord > 2100){
lastBumpRecord = currentTime;
numBumps++;
vibe.vibrate(500);
mp.start();
boolean rtn = true;
if (lastLocation != null) {
rtn = trip.addFlagNow(lastLocation, currentTime);
} else {
// TO BE REMOVED
lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
rtn = trip.addFlagNow(location, currentTime);
// System.out.println("#########"+location.getLatitude()+"
// "+location.getLongitude());
}
if (!rtn) {
System.out.println("could not save flag!!####!!!###");
}
// Update the status page every time, if we can.
notifyListeners();
// }
}
} else if (cal < 1.5 * lastCal) {
isBump = false;
}
}
// calibrate each second
if (currentTime - lastMag > 999) {
if (!isBump) {
lastCal = (lastCal + cal) / 2;
lastMag = currentTime;
}
}
// Location lastLocation;
// TripData trip;
// double currentTime = System.currentTimeMillis();
}
