java 我想在 Android 中解析 Google Map API 以进行反向地理编码
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I want to parse Google Map API for reverse geocode in Android
提问by Jimmy Shah
http://maps.googleapis.com/maps/api/geocode/xml?latlng=23.0043673,72.5411868999996&sensor=false
http://maps.googleapis.com/maps/api/geocode/xml?latlng=23.0043673,72.5411868999996&sensor=false
this link gives me following result This XML file does not appear to have any style information associated with it. The document tree is shown below.
这个链接给了我以下结果 这个 XML 文件似乎没有任何与之相关的样式信息。文档树如下所示。
This XML file does not appear to have any style information associated with it. The document tree is shown below.
<GeocodeResponse>
<status>OK</status>
<result>
<type>route</type>
<formatted_address>
Dharnidhar Road, Vasna, Ahmedabad, Gujarat 380007, India
</formatted_address>
<address_component>
<long_name>Dharnidhar Road</long_name>
<short_name>Dharnidhar Road</short_name>
<type>route</type>
</address_component>
<address_component>
<long_name>Vasna</long_name>
<short_name>Vasna</short_name>
<type>sublocality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<address_component>
<long_name>380007</long_name>
<short_name>380007</short_name>
<type>postal_code</type>
</address_component>
<geometry>
<location>
<lat>23.0043870</lat>
<lng>72.5419184</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>23.0030380</lat>
<lng>72.5405695</lng>
</southwest>
<northeast>
<lat>23.0057360</lat>
<lng>72.5432674</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>23.0041405</lat>
<lng>72.5414125</lng>
</southwest>
<northeast>
<lat>23.0046335</lat>
<lng>72.5424244</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>neighborhood</type>
<type>political</type>
<formatted_address>
Yashkamal Society, Ahmedabad, Gujarat 380007, India
</formatted_address>
<address_component>
<long_name>Yashkamal Society</long_name>
<short_name>Yashkamal Society</short_name>
<type>neighborhood</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<address_component>
<long_name>380007</long_name>
<short_name>380007</short_name>
<type>postal_code</type>
</address_component>
<geometry>
<location>
<lat>23.0089040</lat>
<lng>72.5446990</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>23.0016970</lat>
<lng>72.5373369</lng>
</southwest>
<northeast>
<lat>23.0125600</lat>
<lng>72.5510640</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>23.0016970</lat>
<lng>72.5373369</lng>
</southwest>
<northeast>
<lat>23.0125600</lat>
<lng>72.5510640</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>sublocality</type>
<type>political</type>
<formatted_address>Vasna, Ahmedabad, Gujarat, India</formatted_address>
<address_component>
<long_name>Vasna</long_name>
<short_name>Vasna</short_name>
<type>sublocality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>23.0043673</lat>
<lng>72.5411869</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>22.9964810</lat>
<lng>72.5357220</lng>
</southwest>
<northeast>
<lat>23.0125600</lat>
<lng>72.5530250</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>22.9964810</lat>
<lng>72.5357220</lng>
</southwest>
<northeast>
<lat>23.0125600</lat>
<lng>72.5530250</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>postal_code</type>
<formatted_address>Ahmedabad, Gujarat 380007, India</formatted_address>
<address_component>
<long_name>380007</long_name>
<short_name>380007</short_name>
<type>postal_code</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>22.9967321</lat>
<lng>72.5500596</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>22.9810681</lat>
<lng>72.5317127</lng>
</southwest>
<northeast>
<lat>23.0220193</lat>
<lng>72.5760833</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>22.9810681</lat>
<lng>72.5317127</lng>
</southwest>
<northeast>
<lat>23.0220193</lat>
<lng>72.5760833</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>locality</type>
<type>political</type>
<formatted_address>Ahmedabad, Gujarat, India</formatted_address>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>23.0395677</lat>
<lng>72.5660045</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>22.9028759</lat>
<lng>72.4541115</lng>
</southwest>
<northeast>
<lat>23.1378156</lat>
<lng>72.7026413</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>22.9028759</lat>
<lng>72.4541115</lng>
</southwest>
<northeast>
<lat>23.1378156</lat>
<lng>72.7026413</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>administrative_area_level_2</type>
<type>political</type>
<formatted_address>Ahmedabad, Gujarat, India</formatted_address>
<address_component>
<long_name>Ahmedabad</long_name>
<short_name>Ahmedabad</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>23.0395677</lat>
<lng>72.5660045</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>22.0185745</lat>
<lng>71.5979016</lng>
</southwest>
<northeast>
<lat>23.4630890</lat>
<lng>72.8419331</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>22.0185745</lat>
<lng>71.5979016</lng>
</southwest>
<northeast>
<lat>23.4630890</lat>
<lng>72.8419331</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>administrative_area_level_1</type>
<type>political</type>
<formatted_address>Gujarat, India</formatted_address>
<address_component>
<long_name>Gujarat</long_name>
<short_name>GJ</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>22.2586520</lat>
<lng>71.1923805</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>20.1279540</lat>
<lng>68.1628352</lng>
</southwest>
<northeast>
<lat>24.7057090</lat>
<lng>74.4764881</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>20.1279540</lat>
<lng>68.1628342</lng>
</southwest>
<northeast>
<lat>24.7057090</lat>
<lng>74.4764881</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>country</type>
<type>political</type>
<formatted_address>India</formatted_address>
<address_component>
<long_name>India</long_name>
<short_name>IN</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>20.5936840</lat>
<lng>78.9628800</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>6.7471389</lat>
<lng>68.1627956</lng>
</southwest>
<northeast>
<lat>35.5043404</lat>
<lng>97.3955550</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>6.7471389</lat>
<lng>68.1623859</lng>
</southwest>
<northeast>
<lat>35.5043404</lat>
<lng>97.3955550</lng>
</northeast>
</bounds>
</geometry>
</result>
</GeocodeResponse>
I want to fetch the long_name, locality and country from the xml i have tried various posts but didnt get the perfect answer can anybody please guide me, how to parse this XML into android ??
我想从 xml 中获取 long_name、locality 和 country 我已经尝试了各种帖子，但没有得到完美的答案 谁能指导我，如何将此 XML 解析为 android ？
回答by Shobhit Puri
Raghunandan is right. However if your aim is to just get the 'long_name', locality etc using Google maps API, you might want to try the following way to get it. You can get the response is in form of JSON which I feel is more structured. You can yourself try the URL first: http://maps.google.com/maps/api/geocode/json?latlng=23.0043673,72.5411868999996&sensor=false
拉古南丹是对的。但是，如果您的目标只是使用 Google 地图 API 获取“long_name”、位置等，您可能想尝试以下方法来获取它。你可以得到 JSON 格式的响应，我觉得它更有条理。你可以自己先试试这个网址：http: //maps.google.com/maps/api/geocode/json?latlng=23.0043673,72.5411868999996&sensor=false
I use the following method all the time and it works for me. It might help you get what you are trying:
我一直使用以下方法，它对我有用。它可能会帮助你得到你正在尝试的东西：
You can get the latitude and longitude and then request google servers, to reply with a JSON object containing various information about the location co-ordinates. Here is the function:
您可以获取纬度和经度，然后请求谷歌服务器，以包含有关位置坐标的各种信息的 JSON 对象进行回复。这是函数：
public JSONObject getLocationInfo( double lat, double lng) {
HttpGet httpGet = new HttpGet("http://maps.google.com/maps/api/geocode/json?latlng="+lat+","+lng+"&sensor=false");
HttpClient client = new DefaultHttpClient();
HttpResponse response;
StringBuilder stringBuilder = new StringBuilder();
try {
response = client.execute(httpGet);
HttpEntity entity = response.getEntity();
InputStream stream = entity.getContent();
int b;
while ((b = stream.read()) != -1) {
stringBuilder.append((char) b);
}
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
JSONObject jsonObject = new JSONObject();
try {
jsonObject = new JSONObject(stringBuilder.toString());
} catch (JSONException e) {
e.printStackTrace();
}
return jsonObject;
}
Now you can parse the JSON to get whatever you want. For example, suppose you want complete formatted_address, here is how you can get:
现在您可以解析 JSON 以获得您想要的任何内容。例如，假设您想要完整的 formatted_address，您可以通过以下方式获得：
// get lat and lng value
JSONObject ret = getLocationInfo(lat, lng);
JSONObject location;
String location_string;
try {
//Get JSON Array called "results" and then get the 0th complete object as JSON
location = ret.getJSONArray("results").getJSONObject(0);
// Get the value of the attribute whose name is "formatted_string"
location_string = location.getString("formatted_address");
Log.d("test", "formattted address:" + location_string);
} catch (JSONException e1) {
e1.printStackTrace();
}
If you want to know more of how to extract the desired data from the type of JSON that you'll get in response, see answers on Android - How to parse JSONObject and JSONArraysquestion. Hope it helps you.
如果您想了解更多有关如何从您将获得的 JSON 类型中提取所需数据的更多信息，请参阅Android 上的答案- 如何解析 JSONObject 和 JSONArrays问题。希望对你有帮助。
Update:
更新：
Hope you've read the answers on above question. Now, For example: If you want to get JSON Array of address_components, then just do something like
希望您已阅读上述问题的答案。现在，例如：如果您想获得 JSON 数组address_components，那么只需执行以下操作
JSONArray addressComp = ret.getJSONArray("results").getJSONObject(0).getJSONArray("address_components");
Now you can get the first long_nameas follows:
现在你可以得到第一个long_name如下：
String long_name1 = addressComp.getJSONObject(0).getString("long_name");
So try to see compare the pattern here to the JSON response that you are getting. This will make you understand how to approach for getting any element. Here, resultwas JSONARray, so I got it as JSONArray. Then I took the first object of the resultJSONArray whose namewasaddress_componentsand the valuewas another JSONArray. Then because I wanted to get the first long_name, so I again took the first object of the address_componentJSONArray and then asked to get the valueof the component whose name was long_name. Hope now you understand a bit how you can read values.
因此，请尝试将此处的模式与您获得的 JSON 响应进行比较。这将使您了解如何获取任何元素。在这里，result是 JSONArray，所以我把它作为 JSONArray。然后我把第一个对象result，其JSONArrayname是address_components和value是另一个JSONArray。然后因为我想获取第一个long_name，所以我再次获取了address_componentJSONArray的第一个对象，然后要求获取value名称为long_name. 希望现在您对如何读取值有所了解。
P.S: I didn't run the last two lines but formulated logically. Hope it makes you understand. All the best!
PS：我没有运行最后两行，而是逻辑地制定了。希望能让你明白。一切顺利！
回答by Soumya Ranjan Sethy
Simple way to get exact result . Hope it helps !
获得准确结果的简单方法。希望能帮助到你 ！
just put this line where you want address:
只需将此行放在您想要地址的位置：
String Adress_final=new GeocodeAPI().execute().get();
Then add this ,
然后添加这个，
//calling web geocoder api to get the address
protected class GeocodeAPI extends AsyncTask<String, String, String>
{
String participantURL = Config.GooglePlacesAPI+"latlng="+Lat+","+Lng+"&sensor=false";
JSONObject json;
@Override
protected void onPreExecute()
{
System.out.println("participantURL==>>"+participantURL);
// Create a progressdialog mProgressDialog
mProgressDialog = new ProgressDialog(getActivity());
// Set progressdialog title
mProgressDialog.setTitle("Please Wait");
// Set progressdialog message
mProgressDialog.setMessage("Loading Location...");
mProgressDialog.setIndeterminate(false);
// Show progressdialog
mProgressDialog.show();
}
@Override
protected String doInBackground(String... params) {
JSONParser jsonParser = new JSONParser();
System.out.println("participantURL==>>"+participantURL);
System.out.println("latitude & Longitude=="+Lat+","+Lng);
List<NameValuePair> parameters = new ArrayList<NameValuePair>();
try {
json = jsonParser.getJSONFromUrl(participantURL, parameters);
System.out.println("********Return from JSONParser class********");
System.out.println("json=="+json);
if (json != null) {
// get lat and lng value
JSONObject location;
try {
//Get JSON Array called "results" and then get the 0th complete object as JSON
location = json.getJSONArray("results").getJSONObject(0);
System.out.println("location==>>>"+location);
// Get the value of the attribute whose name is "formatted_string"
location_string = location.getString("formatted_address");
System.out.println("location_string==>>>"+location_string);
Log.d("test", "formattted address:" + location_string);
} catch (JSONException e1) {
e1.printStackTrace();
}
}
}catch (Exception error) {
error.getMessage();
}
return location_string;**
