Hemos estado trabajando en el desarrollo de servicios para la plataforma Android.

En nuestro servicio, necesitamos enviar datos GPS (Latitud y longitud) del dispositivo a algún servicio REST externo después de cada minuto.

Funciona bien durante casi 15 minutos después del bloqueo del dispositivo. Pero después de eso no envía ningún dato.

Después de desbloquear el dispositivo, comienza nuevamente a enviar datos a través del servicio REST.

Mi código hasta ahora

public class MainActivity extends AppCompatActivity {

private PendingIntent pendingIntent;
private PowerManager.WakeLock wakeLock;

public static final String USER_NAME = "USERNAME";

String username;
String password;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Intent alarm = new Intent(this, AlarmReceiver.class);
    boolean alarmRunning = (PendingIntent.getBroadcast(this, 0, alarm, PendingIntent.FLAG_NO_CREATE) != null);
    if(alarmRunning == false) {
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, alarm, 0);
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime(), 30000, pendingIntent);
    }

    PowerManager mgr = (PowerManager)this.getSystemService(Context.POWER_SERVICE);
    wakeLock = mgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"MyWakeLock");
    wakeLock.acquire();
 }

public class BackgroundService extends Service  {

private boolean isRunning;
private Context context;
private Thread backgroundThread;

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

@Override
public void onCreate() {
    this.context = this;
    this.isRunning = false;
    this.backgroundThread = new Thread(myTask);
}

private Runnable myTask = new Runnable() {
    public void run() {
        // Do something here
        login("admin","admin");
        stopSelf();
    }
};

@Override
public void onDestroy() {
    this.isRunning = false;
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    if(!this.isRunning) {
        this.isRunning = true;
        this.backgroundThread.start();
    }
    return START_STICKY;
}

private void login(final String strLatitude, final String strLongitude) {


    class LoginAsync extends AsyncTask<String, Void, String> {

        String charset = "UTF-8";
        HttpURLConnection conn;
        DataOutputStream wr;
        StringBuilder result = new StringBuilder();
        URL urlObj;
        JSONObject jObj = null;
        StringBuilder sbParams;
        String paramsString;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // loadingDialog = ProgressDialog.show(MainActivity.this, "Please wait", "Loading...");
        }

        @Override
        protected String doInBackground(String... params) {
            String uname = params[0];
            String pass = params[1];

            sbParams = new StringBuilder();

            try {
                sbParams.append("name").append("=")
                        .append(URLEncoder.encode(uname, charset));
                sbParams.append("&");
                sbParams.append("password").append("=")
                        .append(URLEncoder.encode(pass, charset));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }

            try {

                String url="http://192.168.0.122:1234/YegoService.svc/AddVehicleMovement";
                URL object=new URL(url);

                HttpURLConnection con = (HttpURLConnection) object.openConnection();
                con.setDoOutput(true);
                con.setDoInput(true);
                con.setRequestProperty("Content-Type", "application/json");
                con.setRequestProperty("Accept", "application/json");
                con.setRequestMethod("POST");

                JSONObject parent = new JSONObject();

                parent.put("strValidatorID","111");
                parent.put("TXT_LAT", "28.25252525");

                parent.put("TXT_LONG", "77.7777777");
                parent.put("DAT_DATE", "");
                con.connect();

                OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream());
                wr.write(parent.toString());
                wr.flush();
                wr.close();

                InputStream input = con.getInputStream();
                BufferedReader reader = new BufferedReader(new InputStreamReader(input));
                String line;

                while ((line = reader.readLine()) != null) {
                    result.append(line);
                }

                con.disconnect();

            } catch (IOException e) {
                e.printStackTrace();
            }
            catch (Exception ex) {
                ex.printStackTrace();
            }

            return result.toString();
        }

        @Override
        protected void onPostExecute(String result){
            String s = result.trim();
        }
    }

    LoginAsync la = new LoginAsync();
    la.execute("admin", "admin");

}

}

public class AlarmReceiver extends BroadcastReceiver {
String strLatitude;
String strLongitude;

@Override
public void onReceive(Context context, Intent intent) {
    Intent background = new Intent(context, BackgroundService.class);
    context.startService(background);
}
}

¿Qué hacer?