Question

我正在尝试使用Geocoding从Latitude和Longitude获取postalCode，但它总是返回NULL，有没有办法让它自由或者我用Geocode做错了？

这是代码::

         Geocoder geo = new Geocoder(context,
                Locale.getDefault());

        List<Address> add;

        try {
            Double mLattitude   =   Double.parseDouble(mLatt);
            Double mLongitude   =   Double.parseDouble(mLong);
            add = geo.getFromLocation(mLattitude, mLongitude, 1);
            if (add != null && !add.isEmpty()) {
                int size    =   add.size();
                Log.e(" init Geo "," List address size "+size);
                Log.e(" initGeo ","Add json "+add);
                StringBuilder str = new StringBuilder();
                if (geo.isPresent()) {
                    Address returnAddress = add.get(0);
                    if(returnAddress!=null) {
                        String zipcode = returnAddress.getPostalCode();
                        str.append(zipcode + "");
                    }else
                    {
                        return thirdPartyService();
                    }

                    if (str == null || str.toString().isEmpty() || str.toString().equalsIgnoreCase("null")) {
                       return thirdPartyService();
                    }
                    else
                    {
                        Log.e(" ", "GEO CODE PRESENT");
                        return str.toString();
                    }


                } else {
                    Log.e(" ", "GEO CODE NOT PRESENT");
                    return thirdPartyService();
                }

            }else
            {
                Log.e(" ", "GEO CODE NOT PRESENT");
                return thirdPartyService();
            }

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

        return "";
    }


09-08 11:37:42.044    32723-640/? E/init Geo﹕ List address size 1
09-08 11:37:42.044    32723-640/? E/initGeo﹕ Add json [Address[addressLines=[0:"93, Delhi - Jaipur Expy",1:"Sector 32",2:"Gurgaon, Haryana 122001",3:"India"],feature=93,admin=Haryana,sub-admin=null,locality=Gurgaon,thoroughfare=Delhi - Jaipur Expy,postalCode=null,countryCode=IN,countryName=India,hasLatitude=true,latitude=28.448048,hasLongitude=true,longitude=77.040622,phone=null,url=null,extras=null]]

Answer 1

根据Android documentation，如果未知，地理编码会返回address or null的邮政编码。

您的代码实现是正确的。

当我用（37.22,33.22）测试时，它返回null。

但是当我使用（28.6100,77.2300）时它返回110001

所以你在应用程序中显示时进行了一些检查

Answer 2

尝试以下代码。

private void getLocationAddress(final double latitude, final double longitude){    
     Geocoder geocoder = new Geocoder(context, Locale.getDefault());
                        String result = null;
                        try {
                            List<Address> addressList = geocoder.getFromLocation(
                                    latitude, longitude, 1);
                            if (addressList != null && addressList.size() > 0) {
                                Address address = addressList.get(0);
                                StringBuilder sb = new StringBuilder();
                                for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
                                    sb.append(address.getAddressLine(i)).append("\n");
                                }
                                sb.append(address.getLocality()).append("\n");
                                sb.append(address.getPostalCode()).append("\n");
                                sb.append(address.getCountryName());
                                result = sb.toString();
                            }
                        } catch (IOException e) {
                            Log.e(TAG, "Unable connect to Geocoder", e);
                        }
    }

也使用以下权限

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />

Answer 3

邮政编码总是使用地理编码时为空，它取决于位置。尝试在城市的一些地方，你可能会得到它，并在农村得到它是有问题的。因此，如果您的应用需要它，请尽可能使用null值

邮政编码null始终与GeoCode

3 个答案: