Android GeoFire onKeyEntered未触发

Question

android从不为匹配queryLocation而执行。但是执行onGeoQueryReady方法。

因此，当我单击菜单栏时，将执行addGeoQueryEventListener，执行onGeoQueryReady方法。但是从来没有执行过onKeyEntered方法。正如您在附件中所看到的，我的位置与顶层节点位于同一个节点中。我还在DB引用中包含了子路径"xxx_location“。下面是我的API版本。

Geofire 2.1.1'
firebase-core:9.0.2'

代码：

 ///geofire connection

  DatabaseReference ref = FirebaseDatabase.getInstance().getReference();
  DatabaseReference refLowLevel = ref.child("xxxxx_location");
  if (refLowLevel!=null) {
      GeoFire geoFire = new GeoFire(refLowLevel);

      // creates a new query around [37.7832, -122.4056] with a radius of 0.6 kilometers
      geoQuery = geoFire.queryAtLocation(new GeoLocation(37.12314,-122.49182),1.80);

      Log.i(TAG, "query-------->"+geoQuery);

      markers = new HashMap<String, Marker>();

      geoQuery.addGeoQueryEventListener(new GeoQueryEventListener() {

          @Override
          public void onKeyEntered(String key, GeoLocation location) {
              Log.i(TAG, "inside painter onkeynetered-------->");

              //Marker marker = map.addMarker(new MarkerOptions().position(new LatLng(location.latitude, location.longitude)));
              //markers.put(key, marker);

          }

          @Override
          public void onKeyExited(String key) {
              Log.i(TAG, "inside painter onkeyexited-------->");
          }

          @Override
          public void onKeyMoved(String key, GeoLocation location) {
              System.out.println(String.format("Key %s moved within the search area to [%f,%f]", key, location.latitude, location.longitude));
          }

          @Override
          public void onGeoQueryReady() {
              Log.i(TAG, "inside painter onqueryready-------->");
          }

          @Override
          public void onGeoQueryError(DatabaseError error) {
              System.err.println("There was an error with this query: " + error);
          }
      });

  }

​

​

Answer 1

您的JSON缺少g键，它是Geofire用于查询的geohashes。没有g键，它就不会在任何查询中找到任何键。

有关如何使用Geofire在数据库中设置位置的示例，请参阅文档

GeoFire.setLocation(“消防基地-总部”，新GeoLocation(37.7853889，-122.4056973))；

如果您想知道setLocation做什么，请查看它的代码：https://github.com/firebase/geofire-java/blob/8385c3148f816807ea3e1873c5e3772d76856057/src/main/java/com/firebase/geofire/GeoFire.java#L162