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我想將我的位置座標發送到Web服務，我有一個名爲「LocationService」的類應該這樣做，但在執行應用程序時什麼也沒有發生......將GPS位置發送到Web服務
LocationService
public class LocationService extends Service implements LocationListener{
public String LOG = "Log";
UserSessionManager session;
private Context mContext = null;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // 0 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000; // 1 second
// Declaring a Location Manager
protected LocationManager locationManager;
public LocationService(Context context) {
this.mContext = context;
}
public LocationService() {
super();
mContext = LocationService.this;
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();
Log.i(LOG, "Service started");
Log.i("asd", "This is sparta");
HashMap<String, String> user = session.obtenerRolyId();
String usuarioId = user.get(UserSessionManager.KEY_ID);
new SendToServer().execute(Double.toString(getLocation().getLongitude()), Double.toString(getLocation().getLatitude()),usuarioId);
return START_STICKY;
}
@Override
public void onCreate() {
super.onCreate();
Log.i(LOG, "Service created");
}
@Override
public void onDestroy() {
super.onDestroy();
Log.i(LOG, "Service destroyed");
}
class SendToServer extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... la) {
try {
HttpURLConnection urlConnection = null;
String posicionActual = "";
BufferedReader reader = null;
OutputStream os = null;
InputStream inputStream = null;
Log.i("string", la[0]);
String longi = la[0]; // Recibo la longitud.
String lati = la[1]; // Recibo la latitud.
String idUsuario = la[2]; // Recibo Id del usuario.
JSONObject coordenadas = new JSONObject();
coordenadas.put("Latitud",lati);
coordenadas.put("Longitud",longi);
posicionActual = coordenadas.toString();
URL url = new URL("http://localhost:8081/odata/Usuarios("+idUsuario+")/ActualizarPosicion");
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/json");
urlConnection.setRequestProperty("Accept", "application/json");
urlConnection.connect();
os = new BufferedOutputStream(urlConnection.getOutputStream());
os.write(posicionActual.getBytes());
} catch (Exception e) {
Log.i("error", e.toString());
}
return "call";
}
}
public Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
//updates will be send according to these arguments
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
}
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
@Override
public void onLocationChanged(Location location) {
//Llamo al servidor cada segundo y le envío mi posición
HashMap<String, String> user = session.obtenerRolyId();
String usuarioId = user.get(UserSessionManager.KEY_ID);
new SendToServer().execute(Double.toString(getLocation().getLongitude()),Double.toString(getLocation().getLatitude()), usuarioId);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}}
我打電話給我的服務從活動：
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_map);
startService(new Intent(UserMapActivity.this, LocationService.class));}
添加logcat的輸出以瞭解問題的原因 – Ale