Question

我的代码我希望从我的firebase数据库中获取帖子，但onKeyEntered从未调用，检查我的代码中是否有问题我写了一些toast来检查，但我发现onQueryReady被调用为预期但问题出在onKeyEntered上，我甚至在特定帖子的位置上设置了静态位置，实际上有很多帖子都有这个位置，但它仍然是相同的，并且onKeyEntered从未调用过。请帮忙。

    @Nullable
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        posts = new ArrayList<>();

        //initialization work of the recycler view
        View rootView = inflater.inflate(R.layout.posts_fragment, container, false);

        //initialization work of the firebase database
        firebaseInitializationWork();

        return recyclerViewInitializationWork(rootView);
    }

    @Override
    public void onStart() {
        super.onStart();
        geoQueryToSearchPosts.addGeoQueryEventListener(geoQueryEventListener);
    }

    @Override
    public void onStop() {
        super.onStop();
        geoQueryToSearchPosts.removeAllListeners();
    }

    private void firebaseInitializationWork() {
        if (posts == null)
            posts = new ArrayList<>();
        //setting up the reference and the geoquery objects
        postsReference = FirebaseDatabase.getInstance().getReference().child("posts");
        geofireToSearchPosts = new GeoFire(postsReference);

        //set the query on the current location and around the user with 1 kilo meter.
        updateLocation();
        geoQueryToSearchPosts = geofireToSearchPosts.queryAtLocation(
                /*getLastKnownLocation()*/new GeoLocation(29.9061584,31.2710861), 1);

        //creating the listener and adding it to the geoQueryToSearchPosts.
        attachTheGeoQueryListener();

    }

    private GeoLocation getLastKnownLocation() {
        GeoLocation geoLocation = null;
        /*if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

        }*/
        Location location = locationManager.getLastKnownLocation("gps");
        geoLocation = new GeoLocation(location.getLatitude() , location.getLongitude());
        return geoLocation;
    }

    //function to initialize the geofire query listener
    //and attach it to the geofire query object (geoQueryToSearchPosts)
    private void attachTheGeoQueryListener() {
        if (geoQueryEventListener == null) {
            geoQueryEventListener = new GeoQueryEventListener() {
                @Override
                public void onKeyEntered(String key, GeoLocation location) {
                    Toast.makeText(getActivity() , "onKeyEntered" , Toast.LENGTH_LONG).show();
                    //retrieving the post by listening on the post node.
                    postsReference.child(key).addListenerForSingleValueEvent(new ValueEventListener() {
                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            //adding the post to the array.
                            posts.add(0, (PostDataClass) dataSnapshot.getValue());

                            // notifying the adapter that there is
                            //an element inserted.
                            mAdapter.notifyItemInserted(0);
                            //scroll to the beginning of the list
                            mRecyclerView.smoothScrollToPosition(0);
                        }

                        @Override
                        public void onCancelled(DatabaseError databaseError) {

                        }
                    });
                }

                @Override
                public void onKeyExited(String key) {
                    postsReference.child(key).addListenerForSingleValueEvent(new ValueEventListener() {
                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            //deleting the post from the posts array and notify the adapter that
                            //the post the postion has been deleted.
                            PostDataClass post = (PostDataClass) dataSnapshot.getValue();
                            int postPosition = posts.indexOf(post);
                            posts.remove(post);
                            mAdapter.notifyItemRemoved(postPosition);
                        }

                        @Override
                        public void onCancelled(DatabaseError databaseError) {

                        }
                    });
                }

                @Override
                public void onKeyMoved(String key, GeoLocation location) {

                }

                @Override
                public void onGeoQueryReady() {
                    Toast.makeText(getActivity() , "onGeoQueryReady" , Toast.LENGTH_LONG).show();
                }

                @Override
                public void onGeoQueryError(DatabaseError error) {
                    Toast.makeText(getActivity() , "onGeoQueryError" , Toast.LENGTH_LONG).show();
                }
            };
            //geoQueryToSearchPosts.addGeoQueryEventListener(geoQueryEventListener);
        }
    }

}

Answer 1

我找到了问题的解决方案，问题是我正在收听帖子节点而不是geofire节点，因此它没有看到任何位置进入我关注的区域。

Answer 2

我有一个非常相似的问题...试图将标记添加到我的Google地图onKeyEntered ...我在onKeyEntered方法中添加了runOnUiThread。

    geoQuery.addGeoQueryEventListener(new GeoQueryEventListener() {
        @Override
        public void onKeyEntered(final String key, GeoLocation location) {

            Log.d(TAG, "Key Entered");

            TrackOrderFragment.this.getActivity().runOnUiThread(new Runnable() {
                @Override
                public void run() {

                    mDriverMarker = googleMap.addMarker(new MarkerOptions()
                            .icon(BitmapDescriptorFactory.fromResource(carIcon))
                            .position(selectedDriver)
                            .title(key));
                    mDriverMarker.setTag(key);
                }
            });



        }

}

真的希望它对您有用...谢谢

onKeyEntered从未调用过

2 个答案: