Question

I am creating an Android App , an Uber Clone. In this I am using Firebase to list the rides created by the user.

The Ride stored in the following format .

{
  "category" : "NUVO",
  "driverids" : "",
  "drop_lat" : "40.7127753",
  "drop_long" : "-74.0059728",
  "estdate" : "Wed@Feb@28th",
  "estmile" : "4.19",
  "esttime" : "01:02@PM",
  "esttotalfare" : "4.61",
  "fareest" : "1.1",
  "g" : "t9z83wv46x",
  "l" : [ 40.674426, -73.944033 ],
  "notes" : "Gv",
  "orgin_lat" : "145 Brooklyn Ave, Brooklyn, NY 11213, USA%20New York, NY, USA",
  "request_id" : "5a75579740d166e95b8b4567",
  "requested_category" : "FAM_SUV",
  "rider_id" : "5a507bf340d16660288b4567",
  "status" : 1,
  "trip_id" : 0
}

Now I am Using GeoFire's GeoQuery's queryAtLocation to pick all rides with in 5 KMs from his current location.

The query uses the lat & lang from the field "l" and compare it with the current location lat & lang of the driver.

If the list's lat & lang is within 5 KMs , it will return the key , that is the parent name of the child "l".

Now I am currently in India. I use Lockito App to fix a Mock GPS location in India. After that I create a Ride within 5 KMs radius.

Now , the ride successfully listed in the drivers list. No Problem.

My Issue

But When I fix a mock GPS location in USA , this flow not working. I fixed the driver location on Brookyln Childeren's Museum and also created a ride on the same museum. But GeoQuery not calling onKeyEntered . It simply exists after calling GeoQueryReady function .

I check my current Lat & Lang from the app and it returns as 40.67434763453142,-73.94402358680964. I checked this against the lat&lang on field "l" .(refer above JSON). Both pointing to same location.

But GeoQuery failed to retrieve it

My Question Why this issue happening ?. If I use India's locations. Geoquery works perfectly .

But why it failing in USA.

You may tell ,"There will be an issue in lockito". But Lockito returning correct location lat lang . I checked it in Logcat. And , if there is a issue in Lockitto then How it working in India.

Here My GeoQoery Code :

 try {
            showDialog();
            double nearByDistanceRadius = 5.00d;

            com.firebase.geofire.GeoFire geoFire = new com.firebase.geofire.GeoFire(FirebaseDatabase.getInstance().getReference().child(childtype));
            final com.firebase.geofire.GeoQuery geoQuery = geoFire.queryAtLocation(new GeoLocation(latitude, longitude), nearByDistanceRadius);
            geoQueryEventListener=new GeoQueryEventListener() {
                @Override
                public void onKeyEntered(final String key, GeoLocation location) {
                    Toast.makeText (getApplicationContext(), "The key is = ",Toast.LENGTH_LONG).show();
                }

                @Override
                public void onKeyExited(final String key) {
                    System.out.println("ON KEYEXITED"+key);
                }

                @Override
                public void onKeyMoved(String key, GeoLocation location) {
                    System.out.println("ON KEYMOVED"+key);
                }

                @Override
                public void onGeoQueryReady() {
                    System.out.println("ON KEYQUERYREADY");


                @Override
                public void onGeoQueryError(DatabaseError error) {
                    System.out.println("ON KEYERROR"+error);
                }
            };
            geoQuery.addGeoQueryEventListener(geoQueryEventListener);

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

Above , except onGeoQueryReady , no method called if I use USA. But it's working in India. Can anyone tell me why that is the case?

Answer 1

这可能早已尘土飞扬，但也许可以帮助其他人。自从你提到了它的模拟GPS坐标。您可能手动输入了它们。

GeoFire使用特殊的g：“代码”（10位数字代码），按地区/城市区分

如果您在相同的城市/国家（在您的情况下为印度）中使用相同的g代码，则可以正常使用！但是，如果您在另一个国家/地区使用相同的代码，则geoQuery将失败。使它工作。您需要在代码中添加一行 geoFire.SetLocation（）和美国境内的某个人只需运行一次该代码。 geoFire将在g：“” Location中保存一个特殊键。获得密钥后，您可以从应用程序中删除该行。您可以使用geoFire生成的密钥在美国手动输入所需的任意位置，geoQuery始终可以在该位置使用！确保使用与geoFire相同的模式。 G： l： 0： 1：

Answer 2

花了一段时间，但我想。这就是有问题的 geofire 依赖。从3.0.0降级到2.3.1解决了。

Why GeoFire's GeoQuery's queryAtLocation not returning keys eventhough the lat & long within the given KMs?

2 个答案: