Java tutorial
/******************************************************************************* * Created by Carlos Yaconi * Copyright 2015 Prey Inc. All rights reserved. * License: GPLv3 * Full license at "/LICENSE" ******************************************************************************/ package com.prey.services; import android.Manifest; import android.app.Service; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.LocationProvider; import android.os.Binder; import android.os.Build; import android.os.Bundle; import android.os.IBinder; import android.support.v4.app.ActivityCompat; import com.prey.PreyConfig; import com.prey.PreyLogger; import com.prey.actions.location.PreyLocation; import com.prey.actions.location.PreyLocationManager; /** * This service is intented to be running while Prey is active. While * running, it will be updating the last location available in PreyConfig * persitent storage */ public class LocationService extends Service { private Location lastRegisteredLocation; //private LocationManager networkLocationManager; private LocationManager androidLocationManager; // This is the object that receives interactions from clients. See // RemoteService for a more complete example. private final IBinder mBinder = new LocalBinder(); /** * Class for clients to access. Because we know this service always runs in * the same process as its clients, we don't need to deal with IPC. */ public class LocalBinder extends Binder { LocationService getService() { return LocationService.this; } } @Override public void onCreate() { PreyLogger.d("LocationService is going to be started..."); androidLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)) { LocationProvider gpsLocationProvider = androidLocationManager.getProvider(LocationManager.GPS_PROVIDER); LocationProvider networkProvider = androidLocationManager.getProvider(LocationManager.NETWORK_PROVIDER); if (gpsLocationProvider != null && androidLocationManager.isProviderEnabled(gpsLocationProvider.getName())) { androidLocationManager.requestLocationUpdates(gpsLocationProvider.getName(), PreyConfig.UPDATE_INTERVAL, PreyConfig.LOCATION_PROVIDERS_MIN_REFRESH_DISTANCE, gpsLocationListener); PreyLogger.d("GPS Location provider has been started."); } if (networkProvider != null && androidLocationManager.isProviderEnabled(networkProvider.getName())) { androidLocationManager.requestLocationUpdates(networkProvider.getName(), PreyConfig.UPDATE_INTERVAL / 4, PreyConfig.LOCATION_PROVIDERS_MIN_REFRESH_DISTANCE, networkLocationListener); PreyLogger.d("NETWORK Location provider has been started."); } } else { PreyLogger.i("___________ask for permission LocationService ACCESS_FINE_LOCATION"); } PreyLogger.d("LocationService has been started..."); } @Override public void onDestroy() { if (androidLocationManager != null) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)) { androidLocationManager.removeUpdates(gpsLocationListener); androidLocationManager.removeUpdates(networkLocationListener); } } } @Override public IBinder onBind(Intent intent) { return mBinder; } public Location getLastRegisteredLocation() { return lastRegisteredLocation; } private void setNewLocation(Location newLocation) { PreyLogger .d("[" + newLocation.getProvider() + "] Fix found!. Accuracy: [" + newLocation.getAccuracy() + "]"); if (lastRegisteredLocation == null) { //PreyLogger.d("-----> First fix. Set as last location!"); lastRegisteredLocation = newLocation; } else { if (newLocation.getTime() - lastRegisteredLocation.getTime() > PreyConfig.LAST_LOCATION_MAX_AGE) { //Last registered fix was set more that 2 minutes ago. It's older so must be updated! //PreyLogger.d("-----> Old fix has expired (older than 2 minutes). Setting new fix as last location!"); lastRegisteredLocation = newLocation; } else if (newLocation.hasAccuracy() && (newLocation.getAccuracy() < lastRegisteredLocation.getAccuracy())) { //New location is more accurate than the previous one. Win! //PreyLogger.d("-------> Newer and more accurate fix. Set as last location!"); lastRegisteredLocation = newLocation; } } PreyLocationManager.getInstance(getApplicationContext()) .setLastLocation(new PreyLocation(lastRegisteredLocation)); } private LocationListener gpsLocationListener = new LocationListener() { public void onStatusChanged(String provider, int status, Bundle extras) { String statusAsString = "Available"; if (status == LocationProvider.OUT_OF_SERVICE) statusAsString = "Out of service"; else if (status == LocationProvider.TEMPORARILY_UNAVAILABLE) statusAsString = "Temporarily Unavailable"; PreyLogger.d("[LocationService] GPS Location provider status has changed: [" + statusAsString + "]."); } public void onProviderEnabled(String provider) { PreyLogger.d("[LocationService] GPS Location Provider has been enabled: " + provider); //androidLocationManager.removeUpdates(gpsLocationListener); //androidLocationManager.requestLocationUpdates(provider, PreyConfig.LOCATION_PROVIDERS_MIN_REFRESH_INTERVAL, PreyConfig.LOCATION_PROVIDERS_MIN_REFRESH_DISTANCE, gpsLocationListener); } public void onProviderDisabled(String provider) { PreyLogger.d("[LocationService] GPS Location Provider has been disabled: " + provider); } public void onLocationChanged(Location location) { setNewLocation(location); } }; private LocationListener networkLocationListener = new LocationListener() { public void onStatusChanged(String provider, int status, Bundle extras) { String statusAsString = "Available"; if (status == LocationProvider.OUT_OF_SERVICE) statusAsString = "Out of service"; else if (status == LocationProvider.TEMPORARILY_UNAVAILABLE) statusAsString = "Temporarily Unavailable"; PreyLogger .d("[LocationService] Network Location provider status has changed: [" + statusAsString + "]."); } public void onProviderEnabled(String provider) { PreyLogger.d("[LocationService] Network Location Provider has been enabled: " + provider); } public void onProviderDisabled(String provider) { PreyLogger.d("[LocationService] Network Location Provider has been disabled: " + provider); } public void onLocationChanged(Location location) { setNewLocation(location); } }; }