Question

我试图添加并显示从JSON对象解析的多个标记。在LOG中，我检查了所有lat长点是否正确，但是当我试图将标记添加到该latlong点时，标记没有显示。

这是我的代码

public class MapsEarthquakeMapActivity extends Activity {
    // Coordinates used for centering the Map
    private static final double CAMERA_LNG = 87.0;
    private static final double CAMERA_LAT = 17.0;
    // The Map Object
    private GoogleMap mMap;
    private final static String URL = "xyzz";
    public static final String TAG = "MapsEarthquakeMapActivity";

    // Set up UI and get earthquake data
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        new HttpGetTask().execute(URL);
    }

    private class HttpGetTask extends
            AsyncTask<String, Void, List<EarthQuakeRec>> {
        AndroidHttpClient mClient = AndroidHttpClient.newInstance("");

        @Override
        protected List<EarthQuakeRec> doInBackground(String... params) {
            HttpGet request = new HttpGet(params[0]);
            JSONResponseHandler responseHandler = new JSONResponseHandler();
            try {
                // Get Earthquake data in JSON format
                // Parse data into a list of EarthQuakeRecs
                return mClient.execute(request, responseHandler);
            } catch (ClientProtocolException e) {
                Log.i(TAG, "ClientProtocolException");
            } catch (IOException e) {
                Log.i(TAG, "IOException");
            }
            return null;
        }

        @SuppressLint("NewApi")
        @Override
        protected void onPostExecute(List<EarthQuakeRec> result) {
            // Get Map Object
            mMap = ((MapFragment) getFragmentManager().findFragmentById(
                    R.id.map)).getMap();
            if (null != mMap) {
                // Add a marker for every earthquake

                for (EarthQuakeRec rec : result) {
                    Log.v("pointM", "" + rec.getPoint());
                    Log.v("NAMES", "" + rec.getName());
                    String point = rec.getPoint();
                    String[] latlng = point.split(",");
                    String lat = latlng[0];
                    String lng = latlng[1];
                    Double lat1 = Double.parseDouble(lat);
                    Double lng1 = Double.parseDouble(lng);
                    Log.v("LATLNGM", "" + lat + "&" + lng);
                    // Add a new marker for this earthquake
                    mMap.addMarker(new MarkerOptions().position(
                            new LatLng(lat1, lng1)).title(rec.getName()));
                }
                mMap.moveCamera(CameraUpdateFactory.newLatLng(new LatLng(
                        CAMERA_LAT, CAMERA_LNG)));
            }
            if (null != mClient)
                mClient.close();
        }
    }
}

这是我进入Log

03-26 08:46:21.975: V/LATLNGM(5193): 77.583690&12.930022
03-26 08:46:22.067: V/LATLNGM(5193): 77.585996&12.932729
03-26 08:46:22.099: V/LATLNGM(5193): 77.595369&12.926995
03-26 08:46:22.139: V/LATLNGM(5193): 77.592627&12.918970
03-26 08:46:22.163: V/LATLNGM(5193): 77.574011&12.935930
03-26 08:46:22.187: V/LATLNGM(5193): 77.564679&12.927071
03-26 08:46:22.203: V/LATLNGM(5193): 77.570388&12.946059
03-26 08:46:22.203: V/LATLNGM(5193): 77.580569&12.956148
03-26 08:46:22.203: V/LATLNGM(5193): 77.564076&12.908918
03-26 08:46:22.203: V/LATLNGM(5193): 77.559660&12.941591

我哪里出错.. ?? 请帮帮我。

感谢所有

如何添加和显示从JSON对象解析的多个标记？

0 个答案: