在OnPostExecute中添加我的位置

Question

我试图解决这整天，但我不能，所以我得请你帮忙。我的应用程序是监视手机从基站接收的数据，并通过PHP和JSON从数据库中获取数据，并在地图上绘制标记（这很好）。如何在同一张地图上添加我的位置标记？我希望该标记与LocationChange一起使用，以便用户可以从数据库中查看他与标记的位置关系。此外，如果您在代码中看到任何更好的解决方案，请告诉我。谢谢。

这是一段代码：

public class MainActivity extends AppCompatActivity implements OnMapReadyCallback {
    TextView textCellId, textCellLac, textCellSignalStrength, textCellNetworkMode;
    private TextView textCellName;
    TelephonyManager Phone;
    procGetCellData Listener;
    GsmCellLocation location;
    String networkmode;

    //
    private static final String JSON_URL = "http://neo.telenor.rs/telenorapp/fetchdata.php";
    //
    @Override
    protected void onCreate(Bundle savedInstanceState)  {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //
        textCellName=(TextView) findViewById(R.id.textCellName);
        textCellName.setMovementMethod(new ScrollingMovementMethod());
        textCellId=(TextView) findViewById(R.id.textCellId);
        textCellLac=(TextView) findViewById(R.id.textCellLac);
        textCellSignalStrength=(TextView) findViewById(R.id.textCellSignalStrength);
        textCellNetworkMode=(TextView) findViewById(R.id.textCellNetworkMode);
        //
        Listener=new procGetCellData();
        Phone=(TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        Phone.listen(Listener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS | PhoneStateListener.LISTEN_CELL_LOCATION);
    }

    @Override
    public void onMapReady(GoogleMap map) {
        map.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
        map.setMyLocationEnabled(true);
    }

    private class procGetCellData extends PhoneStateListener {

        @Override
        public void onSignalStrengthsChanged(SignalStrength signalStrength){
            super.onSignalStrengthsChanged(signalStrength);
            //
            int SignalStrength_ASU=signalStrength.getGsmSignalStrength();
            int SignalStrength_dbm = (2*SignalStrength_ASU)-113;
            textCellSignalStrength.setText(String.valueOf(SignalStrength_dbm));
            //

            String NM = null;
            switch (Phone.getNetworkType()) {
                case 1:
                    NM="GPRS";
                    networkmode = "GSM";
                    break;
                case 2:
                    NM="EDGE";
                    networkmode = "GSM";
                    break;
                case 3:
                    NM="UMTS";
                    networkmode = "UMTS";
                    break;
                case 8:
                    NM="HSDPA";
                    networkmode = "UMTS";
                    break;
                case 9:
                    NM="HSUPA";
                    networkmode = "UMTS";
                    break;
                case 10:
                    NM="HSPA";
                    networkmode = "UMTS";
                    break;
                case 13:
                    NM="LTE";
                    networkmode = "LTE";
                    break;
                case 15:
                    NM="HSPA+";
                    networkmode = "UMTS";
                    break;
                case 0:
                    NM="Unknown";
                    networkmode = "Unknown";
                    break;
            }
            textCellNetworkMode.setText(NM);

        }
        @Override
        public void onCellLocationChanged(CellLocation lokacija) {
            super.onCellLocationChanged(lokacija);
            location = (GsmCellLocation) Phone.getCellLocation();
            textCellId.setText(String.valueOf(location.getCid() % 65536));
            textCellLac.setText(String.valueOf(location.getLac()));
            String JSON_URL_string=JSON_URL + "?cellid=" + textCellId.getText().toString();
            getJSON(JSON_URL_string);
        }

        private void getJSON(String url) {
            class GetJSON extends AsyncTask<String, Void, String>   {
                ProgressDialog loading;
                double lat=0.0;
                double log=0.0;


                @Override
                protected void onPreExecute() {
                    loading = ProgressDialog.show(MainActivity.this, "Please Wait...", null, true, true);
                }

                @Override
                protected String doInBackground(String... params) {

                    String uri = params[0];

                    BufferedReader bufferedReader = null;
                    try {
                        URL url = new URL(uri);
                        HttpURLConnection con = (HttpURLConnection) url.openConnection();
                        StringBuilder sb = new StringBuilder();

                        bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
                        String json;
                        while ((json = bufferedReader.readLine()) != null) {
                            sb.append(json + "\n");
                        }
                        return sb.toString().trim();

                    } catch (Exception e) {
                        return null;
                    }

                }



                @Override
                protected void onPostExecute(String s) {
                    super.onPostExecute(s);

                    try {
                        JSONObject jsonObject = new JSONObject(s);
                        JSONArray result = jsonObject.getJSONArray("result");
                        for (int i=0; i<result.length();i++) {
                            JSONObject object=result.getJSONObject(i);
                            String CellName = object.getString("cellname");
                            String CellAttr = object.getString("cellattr");
                            if (CellAttr.equals(networkmode) ) {
                                textCellName.setText(CellName);
                                String CellLat = object.getString("celllat");
                                String CellLon = object.getString("celllon");
                                String CellDir = object.getString("celldir");
                                double CellLatitude = Double.parseDouble(CellLat);
                                double CellLongitude = Double.parseDouble(CellLon);

                                GoogleMap map = ((MapFragment) getFragmentManager()
                                        .findFragmentById(R.id.map)).getMap();

                                map.setMyLocationEnabled(true);


                                //
                                MarkerOptions Mojmarker = new MarkerOptions().position(new LatLng(lat, log)).title("Moja lokacija");
                                map.addMarker(Mojmarker);

                                //
                                CameraUpdate cameraUpdate =CameraUpdateFactory.newLatLngZoom(new LatLng(CellLatitude, CellLongitude), 17);
                                map.animateCamera(cameraUpdate);

                                MarkerOptions marker1 = new MarkerOptions().position(new LatLng(CellLatitude, CellLongitude)).title(CellName);
                                marker1.icon(BitmapDescriptorFactory.fromResource(R.drawable.site));

                                map.addMarker(marker1);
                            }
                        }

                    } catch (JSONException e) {
                        e.printStackTrace();
                    }

                    loading.dismiss();
                }
            }
            GetJSON gj = new GetJSON();
            gj.execute(url);

        }

    }

}