Manager to deal with GetLastKnownLocation and LocationListener

LocationManager.java

package ****

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;

import com.****.mobile.news.R;

import java.util.List;

/**
 * Created by Isabelle Lepez on 18/08/16.
 */
public class LocatorManager{


    public static final LocatorManager sInstance = new LocatorManager();

    public static LocatorManager getInstance() {
        return sInstance;
    }

    private LocatorManager() {
        // Need to set the default constructor inaccessible because of the singleton pattern.
    }

    public LocationManager mLocationManager;
    public LocationListener mLocationListener;
    private Location location;
    private Context mContext;
    private boolean isGpsEnabled;
    private boolean isNetworkEnabled;
    private String mBestProvider;

    public void init(Context context) {
        mContext = context;
        mLocationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
    }

    private boolean canGetLocation(){

        isGpsEnabled = false;
        isNetworkEnabled = false;

        isGpsEnabled = mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        isNetworkEnabled = mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if(!isGpsEnabled && !isNetworkEnabled){
            displayDialogActivateGps();
            return false;
        }

        return true;
    }

    public Location getLocation(){

        if(canGetLocation()){

            location = getLastKnownLocation();

            mLocationListener = new OnLocationListener();
            //noinspection MissingPermission
            mLocationManager.requestLocationUpdates(mBestProvider, 0, 0, mLocationListener);
        }

        return location;

    }

    public void unregisterLocationListener(){
        //noinspection MissingPermission
        mLocationManager.removeUpdates(mLocationListener);
    }

    private void displayDialogActivateGps() {

        final AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
        alertDialog
                .setMessage(R.string.toast__geolocation__activate)
                .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        Intent intent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        mContext.startActivity(intent);
                    }
                })
                .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        dialogInterface.cancel();
                    }
                })
                .setCancelable(true)
                .show();

    }

    private Location getLastKnownLocation() {
        List<String> providers = mLocationManager.getProviders(true);
        Location bestLocation = null;
        for (String provider : providers) {
            //noinspection MissingPermission
            Location l = mLocationManager.getLastKnownLocation(provider);
            if (l == null) {
                continue;
            }
            if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) {
                bestLocation = l;
                mBestProvider = bestLocation.getProvider();
            }
        }
        return bestLocation;
    }

    private class OnLocationListener implements LocationListener{

        @Override
        public void onLocationChanged(Location location) {

        }

        @Override
        public void onStatusChanged(String s, int i, Bundle bundle) {

        }

        @Override
        public void onProviderEnabled(String s) {

        }

        @Override
        public void onProviderDisabled(String s) {

        }
    }
}