如何靠近距当前位置5公里的地方？

Question

到目前为止，我所做的是我成功地从整个双城附近的Atm Banks Restaurant等地方到达 但我只是想显示附近距离目前用户位置5公里的地方，我搜索了很多，但找不到我的问题的任何答案

＆＃34;这是我的代码，我按照名字＆＃34;

获取地点

myLocation = new MyLocation(context);

    if (myLocation.isLocationAvailable() && myLocation.getUserLocation() != null)
    {
        current_location_lat =  myLocation.getUserLocation().latitude;

        current_location_lng =  myLocation.getUserLocation().longitude;

        latStr = current_location_lat + "";

        longStr = current_location_lng + "";

        myLatLng = new LatLng(current_location_lat, current_location_lng);

        //url = url_part1 + latStr + "," + longStr + url_part2;

        Log.d("LATITUDE", String.valueOf(current_location_lat));

        Log.d("LONGITUDE", String.valueOf(current_location_lng));


        new PlaceTask(context, positionOfType, latStr, longStr, new onTaskDoneListener() 
        {
            @Override
            public void onTaskDone(JSONObject jsonObject) 
            {
                if(jsonObject!=null)
                {
                    try 
                    {
                        JSONObject obj = jsonObject;//new JSONObject(jsonObject);

                        String status = obj.getString("status");

                        if(status.equals("OK"))
                        {
                            JSONArray arr = obj.getJSONArray("results");

                            for(int i = 0; i < arr.length(); i++)
                            {
                                double lat = arr.getJSONObject(i).getJSONObject("geometry").getJSONObject("location").getDouble("lat");

                                double lng = arr.getJSONObject(i).getJSONObject("geometry").getJSONObject("location").getDouble("lng"); 

                                String place_name = arr.getJSONObject(i).getString("name");

                                String vicinity = arr.getJSONObject(i).getString("vicinity");


                                HashMap<String, String> map = new HashMap<String,String>();

                                map.put("placeName", place_name);

                                map.put("vicinity", vicinity);

                                map.put("lat", String.valueOf(lat));

                                map.put("lng", String.valueOf(lng));

                                list.add(map);
                                Global_Var.latvalue.add(i,String.valueOf(lat));
                                Global_Var.longtvalue.add(i,String.valueOf(lng));
                            }

                            NearByPlaceAdapter adapter = new NearByPlaceAdapter(context, list);

                            listView.setAdapter(adapter);
                        }
                    } 
                    catch (JSONException e) 
                    {
                        e.printStackTrace();
                    }
                }
                else
                {
                    Toast.makeText(context, "Response is Null", Toast.LENGTH_LONG).show();
                }

            }
        }).execute();

        //showSearchDialog(map);    
    }               
    else
    {
        Toast.makeText(context, "Please Enable Location Services and GPS From your Device", 
                Toast.LENGTH_LONG).show();
    }       

MyLocation

public MyLocation(Context context) {
    this.context = context;

    try {
        manager = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);
        if (manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            islocavailable = true;
            manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000,
                    1, this);
            Log.d("gps enabled", "gps enabled");
            String locationProvider = LocationManager.GPS_PROVIDER;

            Location lastKnownLocation = manager
                    .getLastKnownLocation(locationProvider);
            userLocation = new LatLng(lastKnownLocation.getLatitude(),
                    lastKnownLocation.getLongitude());
            Log.d("gps disabled 1", lastKnownLocation.getLatitude() + ","
                    + lastKnownLocation.getLongitude());
            // map.moveCamera(CameraUpdateFactory.newLatLngZoom(userLocation,
            // 15));
            // islocavailable=true;
        } else if (manager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
            islocavailable = true;
            manager.requestLocationUpdates(
                    LocationManager.NETWORK_PROVIDER, 1000, 1, this);
            String locationProvider = LocationManager.NETWORK_PROVIDER;

            Location lastKnownLocation = manager
                    .getLastKnownLocation(locationProvider);
            userLocation = new LatLng(lastKnownLocation.getLatitude(),
                    lastKnownLocation.getLongitude());
            // map.moveCamera(CameraUpdateFactory.newLatLngZoom(userLocation,
            // 15));
            Log.d("gps disabled 2", lastKnownLocation.getLatitude() + ","
                    + lastKnownLocation.getLongitude());
            // islocavailable=true;
        } else {
            Log.d("all disabled", "all disabled");

            islocavailable = false;
            // showAlertDialog();
        }
    } catch (NullPointerException ex) {
                ex.printStackTrace();
    }

}