LocationService.java

package com.nativemoduleapp;

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.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

import androidx.annotation.Nullable;
import androidx.core.app.ActivityCompat;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.TimeUnit;

import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

public class LocationService extends Service implements LocationListener {

    private static final String TAG = "MY_TRACKER_OPEN_24";
    private Context context;
    boolean isGPSEnable = false;
    boolean isNetworkEnable = false;
    double latitude, longitude;
    private String data = "";
    private static final int NOTIFY_INTERVAL = 60000;
    LocationManager locationManager;
    Location location;

    public double track_lat = 0.0;
    public double track_lng = 0.0;

    // run on another Thread to avoid crash
    private Handler mHandler = new Handler();
    // timer handling
    private Timer mTimer = null;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();

        // cancel if already existed
        if(mTimer != null) {
            mTimer.cancel();
        } else {
            // recreate new
            mTimer = new Timer();
        }
        // schedule task
        mTimer.scheduleAtFixedRate(new TimeDisplayTimerTask(), 0, NOTIFY_INTERVAL);
    }


    class TimeDisplayTimerTask extends TimerTask {

        @Override
        public void run() {
            // run on another thread
            mHandler.post(new Runnable() {

                @Override
                public void run() {
                    // get current position location
                    updatePositions();

                    // Call api to update positions in mysql db
                    Thread thread = new Thread(){
                        public void run(){
                            try {
                                okHttpPost(data, "["+track_lat+","+track_lng+"]");
                                Toast.makeText(getApplicationContext(), "here: success: " + track_lat + " + " + track_lng, Toast.LENGTH_LONG).show();
                            } catch (Exception e) {
                                Toast.makeText(getApplicationContext(), "here: error: " + e.toString(), Toast.LENGTH_LONG).show();
                                e.printStackTrace();
                            }
                        }
                    };
                    thread.start();
                    
                }

            });
        }

        private String getDateTime() {
            // get date time in custom format
            SimpleDateFormat sdf = new SimpleDateFormat("[yyyy/MM/dd - HH:mm:ss]");
            return sdf.format(new Date());
        }
    }

    private void okHttpPost(String id, String positions) throws IOException {
        OkHttpClient client = new OkHttpClient().newBuilder()
                .build();
        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
        RequestBody body = RequestBody.create(mediaType, "id=" + id + "&positions=" + positions);
        Request request = new Request.Builder()
                .url("[URL]")
                .method("PUT", body)
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .build();
        Response response = client.newCall(request).execute();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        this.context = this;

        updatePositions();

        Bundle extras = intent.getExtras();

        if(extras != null) {
            String user_id = (String) extras.get("user_id");
            if(user_id != null) {
                data = user_id;
            }

        }

        return START_REDELIVER_INTENT;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

    @Override
    public void onLocationChanged(Location location) {

    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }

    /******************************/

    public void updatePositions() {
        locationManager = (LocationManager) getApplicationContext().getSystemService(LOCATION_SERVICE);
        isGPSEnable = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        isNetworkEnable = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (!isGPSEnable && !isNetworkEnable) {
            Log.e(TAG, "CAN'T GET LOCATION");
            stopSelf();
        } else {
            if (isNetworkEnable) {
                location = null;
                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    return;
                }
                locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, this);
                if (locationManager != null) {
                    location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                    if (location != null) {

                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                        track_lat = latitude;
                        track_lng = longitude;
                    }
                }
            }

            if (isGPSEnable) {
                location = null;
                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, this);
                if (locationManager != null) {
                    location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                    if (location != null) {
                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                        track_lat = latitude;
                        track_lng = longitude;
                    }
                }
            }

        }
    }
}