每个标记只有 1 个 place_id

Question

我正在过滤用户周围的附近地点，我想获取用户周围每个标记/地点的 place_id。

但它只显示所有标记/地点的 1 个地点 ID。 logcat显示不同的place_id，但它是应用程序，它只是sn-p 1 place_id。

为了更深入的了解：我发布了一个示例视频：https://www.youtube.com/watch?v=-0pmjblb_G8。

如您所见，每次我尝试点击标记/地点时，它都会显示与其他标记/地点相同的 place_id。

我可以发布任何其他需要的代码以进行澄清。

更新：附加信息：

我将 placeId 设为 静态字符串 placeId。 然后我在 MainActivity 上添加了这个

    public boolean onMarkerClick(Marker marker) {
        Toast.makeText(traffic.this, " " + GetNearbyPlacesData.placeId, Toast.LENGTH_SHORT).show();
        return true;
    }

这样我就可以看到每个标记/地点的 placeId。

更新：附加信息：

public class GetNearbyPlacesData extends AsyncTask<Object, String, String> {

    String googlePlacesData;
    GoogleMap mMap;
    String url;
  static  String placeID = "";

    @Override
    protected String doInBackground(Object... params) {
        try {
            Log.d("GetNearbyPlacesData", "doInBackground entered");
            mMap = (GoogleMap) params[0];
            url = (String) params[1];
            DownloadUrl downloadUrl = new DownloadUrl();
            googlePlacesData = downloadUrl.readUrl(url);
            Log.d("GooglePlacesReadTask", "doInBackground Exit");
        } catch (Exception e) {
            Log.d("GooglePlacesReadTask", e.toString());
        }
        return googlePlacesData;
    }

    @Override
    protected void onPostExecute(String result) {

        Log.d("GooglePlacesReadTask", "onPostExecute Entered");
        List<HashMap<String, String>> nearbyPlacesList = null;
        DataParser dataParser = new DataParser();
        nearbyPlacesList = dataParser.parse(result);
        ShowNearbyPlaces(nearbyPlacesList, result);
        Log.d("GooglePlacesReadTask", "onPostExecute Exit");

    }


    private void ShowNearbyPlaces(List<HashMap<String, String>> nearbyPlacesList, String result) {
        for (int i = 0; i < nearbyPlacesList.size(); i++) {
            Log.d("onPostExecute", "Entered into showing locations");

            MarkerOptions markerOptions = new MarkerOptions();
            HashMap<String, String> googlePlace = nearbyPlacesList.get(i);
            double lat = Double.parseDouble(googlePlace.get("lat"));
            double lng = Double.parseDouble(googlePlace.get("lng"));
            String placeName = googlePlace.get("place_name");
            String vicinity = googlePlace.get("vicinity");


            try {
                JSONObject jsonObject = new JSONObject(result);
                //CHECK IF i IS CHANGING HERE
                //CHECK IF RESULTS AND PLACE ID ARE CHANGING WITH DEBUGGER
                placeID = jsonObject.getJSONArray("results").getJSONObject(i).getString("place_id");
                Log.d("onPostExecute", placeID);
                LatLng latLng = new LatLng(lat, lng);
                markerOptions.position(latLng);
                Marker m = mMap.addMarker(new MarkerOptions()
                        .position(latLng)
                        .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))
                        .snippet("placeId:" + placeID)
                        .title("placeId:" + placeID));
                m.showInfoWindow();
                mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
                mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
            } catch (Exception e) {

            }



//            markerOptions.title(placeName + " : " + vicinity);



            //move map camera


        }
    }
}

Answer 1

地点 ID 在地点 API 附近搜索的 JSON 响应中返回。

你可以看到类似的东西：

 ...
 "results":[
{
  "geometry":{
    "location":{
      "lat":-33.8688197,"lng":151.2092955
    },
    "viewport":{
      "northeast":{
        "lat":-33.5782519,"lng":151.3429976
      },
      "southwest":{
        "lat":-34.118328,"lng":150.5209286
      }
    }
  },
  "icon":"https://maps.gstatic.com/mapfiles/place_api/icons/geocode-71.png",
  "id":"044785c67d3ee62545861361f8173af6c02f4fae",
  "name":"Sydney",
  "photos":[
    {
      "height":2448,
      "html_attributions":[
        "Hatim Ghadhban Abood"
      ],
      "photo_reference":"CoQBdwAAAMIVPsN50AxLsKj-QiQ2pCrKaXTZd-OpHHcQ4BrHkrFYylWZS1MP0GDqAA8GrZIsqvgg97eDsQVV7UPGeGnIvRTJHPPbnkOmW6VhoxKXAKX_0NqCYAiK4twz4a4ELPwPC0tyCeU1KtkYcKknhhgohG41F4JbFru4m0NiFE3TtAp_EhC1wpA1LN68NZOJ1l_iXctoGhTNz_68e8x-dPM6G0PAZiWezSkvsg",
      "width":3264
    }
  ],
  "place_id":"ChIJP3Sa8ziYEmsRUKgyFmh9AQM",
  "reference":"CmRbAAAA5LVfsLJXuBE1N7KDgJUTSgHHbGpGUVGgnLPVkobaylk6n9MsiPlqlYMmC0AdkqgzITScK_qDs05-n3ut6RMcrT2rHRwN36_pI8RoPNbNe9fPbOIyO2kTX9o7svURRqTpEhB4Phdre1afknnC5Ex2AewpGhRNNL5e4kxo1_L4BJgGZrRZlmWnmQ",
  "scope":"GOOGLE",
  "types":[
    "colloquial_area","locality","political"
  ],
  "vicinity":"Sydney"
},... 

您需要提取一个字段place_id。如果您按照上面提到的教程进行操作，您可以看到您在 DataParser 类中解析 JSON 响应，因此您必须修改 private HashMap<String, String> getPlace(JSONObject googlePlaceJson) 方法以将地点 ID 添加到地点 HashMap：

private HashMap<String, String> getPlace(JSONObject googlePlaceJson) {
    HashMap<String, String> googlePlaceMap = new HashMap<String, String>();
    String placeName = "-NA-";
    String vicinity = "-NA-";
    String latitude = "";
    String longitude = "";
    String reference = "";
    String placeID = "";

    Log.d("getPlace", "Entered");

    try {
        if (!googlePlaceJson.isNull("name")) {
            placeName = googlePlaceJson.getString("name");
        }
        if (!googlePlaceJson.isNull("vicinity")) {
            vicinity = googlePlaceJson.getString("vicinity");
        }
        latitude = googlePlaceJson.getJSONObject("geometry").getJSONObject("location").getString("lat");
        longitude = googlePlaceJson.getJSONObject("geometry").getJSONObject("location").getString("lng");
        reference = googlePlaceJson.getString("reference");
        //Let's get place ID here
        placeID = googlePlaceJson.getString("place_id");

        googlePlaceMap.put("place_name", placeName);
        googlePlaceMap.put("vicinity", vicinity);
        googlePlaceMap.put("lat", latitude);
        googlePlaceMap.put("lng", longitude);
        googlePlaceMap.put("reference", reference);
        //Let's add place ID to hash map
        googlePlaceMap.put("place_id", placeID);

        Log.d("getPlace", "Putting Places");
    } catch (JSONException e) {
        Log.d("getPlace", "Error");
        e.printStackTrace();
    }
    return googlePlaceMap;
}

之后，您将能够在显示标记的异步任务中检索地点 ID（查看 ShowNearbyPlaces 方法）：

public class GetNearbyPlacesData extends AsyncTask<Object, String, String> {

String googlePlacesData;
GoogleMap mMap;
String url;

@Override
protected String doInBackground(Object... params) {
    try {
        Log.d("GetNearbyPlacesData", "doInBackground entered");
        mMap = (GoogleMap) params[0];
        url = (String) params[1];
        DownloadUrl downloadUrl = new DownloadUrl();
        googlePlacesData = downloadUrl.readUrl(url);
        Log.d("GooglePlacesReadTask", "doInBackground Exit");
    } catch (Exception e) {
        Log.d("GooglePlacesReadTask", e.toString());
    }
    return googlePlacesData;
}

@Override
protected void onPostExecute(String result) {
    Log.d("GooglePlacesReadTask", "onPostExecute Entered");
    List<HashMap<String, String>> nearbyPlacesList = null;
    DataParser dataParser = new DataParser();
    nearbyPlacesList =  dataParser.parse(result);
    ShowNearbyPlaces(nearbyPlacesList);
    Log.d("GooglePlacesReadTask", "onPostExecute Exit");
}

private void ShowNearbyPlaces(List<HashMap<String, String>> nearbyPlacesList) {
    for (int i = 0; i < nearbyPlacesList.size(); i++) {
        Log.d("onPostExecute","Entered into showing locations");
        MarkerOptions markerOptions = new MarkerOptions();
        HashMap<String, String> googlePlace = nearbyPlacesList.get(i);
        double lat = Double.parseDouble(googlePlace.get("lat"));
        double lng = Double.parseDouble(googlePlace.get("lng"));
        String placeName = googlePlace.get("place_name");
        String vicinity = googlePlace.get("vicinity");

        //Retrieve a place ID here
        String placeID = googlePlace.get("place_id");

        LatLng latLng = new LatLng(lat, lng);
        markerOptions.position(latLng);
        markerOptions.title(placeName + " : " + vicinity);
        mMap.addMarker(markerOptions);
        markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
        //move map camera
        mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
        mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
    }
}
}