Question

此函数将json数据存储在hashmap中。

  private Map<MarkerOptions, JSONObject> markersMap = new HashMap<MarkerOptions, JSONObject>();



private void parseLocationResult(final JSONObject result) {

    String id, place_id = null, placeName = null, reference, icon, vicinity = null,location;
    JSONArray rev;
    double latitude;
    double longitude;

    try {
        final JSONArray jsonArray = result.getJSONArray(RESULTS);//JavaScript Object Notation

        if (result.getString(STATUS).equalsIgnoreCase(OK)) {

            mMap.clear();

            for (int i = 0; i < jsonArray.length(); i++) {
                final JSONObject place = jsonArray.getJSONObject(i);

                id = place.getString(SUPERMARKET_ID);
                place_id = place.getString(PLACE_ID);
                if (!place.isNull(NAME)) {
                    placeName = place.getString(NAME);
                }
                if (!place.isNull(VICINITY)) {
                    vicinity = place.getString(VICINITY);
                }
                latitude = place.getJSONObject(GEOMETRY).getJSONObject(LOCATION)
                        .getDouble(LATITUDE);
                longitude = place.getJSONObject(GEOMETRY).getJSONObject(LOCATION)
                        .getDouble(LONGITUDE);
                reference = place.getString(REFERENCE);
                icon = place.getString(ICON);


                MarkerOptions markerOptions = new MarkerOptions();
                final LatLng latLng = new LatLng(latitude, longitude);
                markerOptions
                        .icon(BitmapDescriptorFactory.fromResource(R.drawable.bluemarker))
                        .position(latLng);
                markerOptions.title(placeName + " : " + vicinity);


                mMap.addMarker(markerOptions);
                markersMap.put(markerOptions,place);


            }

            Toast.makeText(getBaseContext(), jsonArray.length() + " found!",
                    Toast.LENGTH_LONG).show();

        } else if (result.getString(STATUS).equalsIgnoreCase(ZERO_RESULTS)) {
            Toast.makeText(getBaseContext(), "Not found in 5KM radius!!!",
                    Toast.LENGTH_LONG).show();
        }

    } catch (JSONException e) {

        e.printStackTrace();
        Log.e(TAG, "parseLocationResult: Error=" + e.getMessage());
    }


}

现在我在这个函数中想要获取存储在hashMap中的细节。稍后我会在之前的函数（parseLocationResult）中调用此函数（ShowDetails）。我已经声明了json对象。现在请告诉我如何在ShowDetails函数中获取详细信息，这些函数通过函数parseLocationResult存储在哈希映射中。

 public void showdetails(final Place place)


{
    final JSONObject jsonObject=markersMap.get(markersMap);



    mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
        @Override
        public boolean onMarkerClick(Marker marker) {

            SharedPreferences settings = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
            SharedPreferences.Editor editor = settings.edit();


            editor.putString("_PlaceID", place.getId());
            editor.putString("_name", (String) place.getName());
            editor.putString("_address", (String) place.getAddress());
            editor.putString("_webUri", String.valueOf(place.getWebsiteUri()));
            editor.putString("_PhoneNo", (String) place.getPhoneNumber());
            editor.putString("_Lat", String.valueOf(place.getLatLng().latitude));
            editor.putString("_Lng", String.valueOf(place.getLatLng().longitude));

            editor.putString("_rating",String.valueOf(place.getRating()));
            editor.apply();











            Intent i=new Intent(MapsActivity.this,infoWindow.class);
            startActivity(i);

            return false;
        }
    });

}

Answer 1

更改您的

   val rdd = sc.textFile("/home/training/mydata/sports.txt")
val text =rdd.map(lines=>lines.split(",")).map(arrays=>arrays(0),arrays(1),arrays(2),arrays(3),arrays(4)).toDF("first_name","sports","medal_type","year","country")

text.filter(text("medal_type")==="silver" && ("country")==="USA" groupBy("year").count().show

到

private Map<MarkerOptions, JSONObject> markersMap = new HashMap<MarkerOptions, JSONObject>();

然后将Marker存储在地图中，如下所示：

private Map<Marker, JSONObject> markersMap = new HashMap<Marker, JSONObject>();

稍后您可以像这样检索您的Json：

Marker marker = mMap.addMarker(markerOptions);
markersMap.put(marker,place);

想要通过单击存储在HashMap中的标记获取位置的详细信息

1 个答案: