public class MainActivity extends Activity {
Button btn_start;
private static final int REQUEST_PERMISSIONS = 100;
boolean boolean_permission;
TextView tv_latitude, tv_longitude, tv_address,tv_area,tv_locality;
SharedPreferences mPref;
SharedPreferences.Editor medit;
Double latitude,longitude;
Geocoder geocoder;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    btn_start = (Button) findViewById(R.id.btn_start);
    tv_address = (TextView) findViewById(R.id.tv_address);
    tv_latitude = (TextView) findViewById(R.id.tv_latitude);
    tv_longitude = (TextView) findViewById(R.id.tv_longitude);
    tv_area = (TextView)findViewById(R.id.tv_area);
    tv_locality = (TextView)findViewById(R.id.tv_locality);
    geocoder = new Geocoder(this, Locale.getDefault());
    mPref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    medit = mPref.edit();


    btn_start.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (boolean_permission) {

                if (mPref.getString("service", "").matches("")) {
                    medit.putString("service", "service").commit();

                    Intent intent = new Intent(getApplicationContext(), GoogleService.class);
                    startService(intent);

                } else {
                    Toast.makeText(getApplicationContext(), "Service is already running", Toast.LENGTH_SHORT).show();
                }
            } else {
                Toast.makeText(getApplicationContext(), "Please enable the gps", Toast.LENGTH_SHORT).show();
            }

        }
    });

    fn_permission();
}

private void fn_permission() {
    if ((ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {

        if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION))) {


        } else {
            ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION

                    },
                    REQUEST_PERMISSIONS);

        }
    } else {
        boolean_permission = true;
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    switch (requestCode) {
        case REQUEST_PERMISSIONS: {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                boolean_permission = true;

            } else {
                Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();

            }
        }
    }
}

private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {

        latitude = Double.valueOf(intent.getStringExtra("latitude"));
        longitude = Double.valueOf(intent.getStringExtra("longitude"));

        List<Address> addresses = null;

        try {
            addresses = geocoder.getFromLocation(latitude, longitude, 1);
            String cityName = addresses.get(0).getAddressLine(0);
            String stateName = addresses.get(0).getAddressLine(1);
            String countryName = addresses.get(0).getAddressLine(2);

            tv_area.setText(addresses.get(0).getAdminArea());
            tv_locality.setText(stateName);
            tv_address.setText(countryName);



        } catch (IOException e1) {
            e1.printStackTrace();
        }


        tv_latitude.setText(latitude+"");
        tv_longitude.setText(longitude+"");
        tv_address.getText();


    }
};

@Override
protected void onResume() {
    super.onResume();
    registerReceiver(broadcastReceiver, new IntentFilter(GoogleService.str_receiver));

}

@Override
protected void onPause() {
    super.onPause();
    unregisterReceiver(broadcastReceiver);
}


}

public class GoogleService extends Service implements LocationListener{

boolean isGPSEnable = false;
boolean isNetworkEnable = false;
double latitude,longitude;
LocationManager locationManager;
Location location;
private Handler mHandler = new Handler();
private Timer mTimer = null;
long notify_interval = 1000;
 public static String str_receiver =
"com.findmyelderly.findmyelderly.receiver";
Intent intent;




public GoogleService() {

}

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

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

    mTimer = new Timer();
    mTimer.schedule(new TimerTaskToGetLocation(),5,notify_interval);
    intent = new Intent(str_receiver);
//        fn_getlocation();
}

@Override
public void onLocationChanged(Location location) {

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onProviderDisabled(String provider) {

}

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

    if (!isGPSEnable && !isNetworkEnable) {

    } else {

        if (isNetworkEnable) {
            location = null;
            try {
                locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, this);
                if (locationManager != null) {
                    location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                    if (location != null) {

                        Log.e("latitude", location.getLatitude() + "");
                        Log.e("longitude", location.getLongitude() + "");

                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                        fn_update(location);
                    }
                }
            } catch (SecurityException e) {
                e.printStackTrace();
            }
        }


            if (isGPSEnable) {
                location = null;
                try {
                    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, this);
                    if (locationManager != null) {
                        location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                        if (location != null) {
                            Log.e("latitude", location.getLatitude() + "");
                            Log.e("longitude", location.getLongitude() + "");
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                            fn_update(location);
                        }
                    }
                } catch (SecurityException e) {
                    e.printStackTrace();
                }
            }


        }

    }

    private class TimerTaskToGetLocation extends TimerTask {
        @Override
        public void run() {

            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    fn_getlocation();
                }
            });

        }
    }


private void fn_update(Location location){

    intent.putExtra("latutide",location.getLatitude()+"");
    intent.putExtra("longitude",location.getLongitude()+"");
    sendBroadcast(intent);
}


}

.........
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.google.android.gms:play-services-location:10.0.1'
compile 'com.android.support:multidex:1.0.0'

..........

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>

.........

<service android:name=".GoogleService" android:exported="false" android:enabled="true"/>
</application>

</manifest>