Determining the speed of a vehicle using GPS in android

Question

I would like to know how to get the speed of a vehicle using your phone while seated in the vehicle using gps. I have read that the accelerometer is not very accurate. Anoth

Answer 1

public class MainActivity extends Activity implements LocationListener {

add implements LocationListener next to Activity

LocationManager lm =(LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
        this.onLocationChanged(null);

LocationManager.GPS_PROVIDER, 0, 0, The first zero stands for minTime and the second one for minDistance in which you update your values. Zero means basically instant updates which can be bad for battery life, so you may want to adjust it.

     @Override
    public void onLocationChanged(Location location) {

    if (location==null){
         // if you can't get speed because reasons :)
        yourTextView.setText("00 km/h");
    }
    else{
        //int speed=(int) ((location.getSpeed()) is the standard which returns meters per second. In this example i converted it to kilometers per hour

        int speed=(int) ((location.getSpeed()*3600)/1000);

        yourTextView.setText(speed+" km/h");
    }
}


@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

}


@Override
public void onProviderEnabled(String provider) {
    // TODO Auto-generated method stub

}


@Override
public void onProviderDisabled(String provider) {


}

Don't forget the Permissions