我正在尝试从谷歌地图共享位置链接获取位置,所以我使用谷歌缩短URL API来扩展URL,但当我从Android设备共享谷歌地图应用程序的URL时,它给了我https://maps.app.goo.gl/eEhh3
这种URL。它没有给我实际扩展的URL来提供位置信息。
如何扩展这个:
https://maps.app.goo.gl/eEhh3
在此链接中:
https://www.google.com/maps/place/Siddique+Trade+Center/@31.5313297,74.3504459,17z/data=!3m1!4b1!4m5!3m4!1s0x391904e4af9b1e35:0xee6f3c848c9e5341!8m2!3d31.5313297!4d74.3526346
这是我用来扩展它的API URL。
“Qazxswpoi”
但是,不是给我上面的位置信息URL,而是返回这个长URL。
https://www.googleapis.com/urlshortener/v1/url?shortUrl=https://maps.app.goo.gl/eEhh3&key=(API_KEY)
请帮助我如何通过Google API获取上述位置信息网址,以便从任何设备(IOS,WebAPP,特别是Android)通过Google Map共享位置Url获取位置(Lat,Lng)。
现在似乎(2019年)没有单独的API或服务来扩展Google地图中的共享位置网址,但您可以使用基于该技巧的解决方法:Google服务器可以通过Google地图网络界面执行此操作。
TLDR;
你不需要https://maps.app.goo.gl/?link=https://www.google.com/maps/place//data%3D!4m2!3m1!1s0x391904e4af9b1e35:0xee6f3c848c9e5341?utm_source%3Dmstt_1&apn=com.google.android.apps.maps&ibi=com.google.Maps&ius=comgooglemapsurl&isi=585027354
。例如,如果
在PC上的Web浏览器(例如FireFox)中键入的URL比扩展该URL并显示标记。在此期间,您可以在地址字段中看到“部分扩展”的URL,例如:
https://maps.app.goo.gl/eEhh3
在1-2秒内通过“完全展开”URL更改(重定向到),使用lat / lng坐标,如:
https://www.google.com/maps/place//data=!4m2!3m1!1s0x391904e4af9b1e35:0xee6f3c848c9e5341?utm_source=mstt_1
。
所以你可以使用https://www.google.com/maps/place/Siddique+Trade+Center/@31.5313297,74.3504459,17z/data=!3m1!4b1!4m5!3m4!1s0x391904e4af9b1e35:0xee6f3c848c9e5341!8m2!3d31.5313297!4d74.3526346
做同样的事情并从中获得“完全扩展”(例如在WebView
的public void onPageFinished(WebView view, String url)
)。注意:有必要跳过第一个“部分扩展”的URL。
另一个问题:WebViewClient
将缩短的网址(如WebView
)转换为Intent for Google Maps Application,并且“部分扩展”的网址https://maps.app.goo.gl/eEhh3
永远不会被加载。实际上,如果你只需要显示标记就足够了。但是如果你需要坐标这个问题可以通过https://www.google.com/maps/place//data=!4m2!3m1!1s0x391904e4af9b1e35:0xee6f3c848c9e5341?utm_source=mstt_1
打开缩短的URL https://maps.app.goo.gl/eEhh3
并在连接打开和HttpUrlConnection
后通过HttpUrlConnection.getURL()
或通过Location
Header字段重定向“部分扩展”URL。实际上,如果您将来自HttpUrlConnection.getInputStream()
called输入流的所有响应加载为HttpUrlConnection
- 您可以通过String
标记在其中找到所需的lat / lng坐标。就像是:
https://www.google.com/maps/preview/place
通过...
[[[1,42]\n]\n,0,null,0,47]\n]\n,null,\"Suit 706 Siddiq Trade Center, Main Blvd Gulberg, Block H Gulberg III, Lahore, Punjab, Pakistan\",null,null,\"https://www.google.com/maps/preview/place/Siddique+Trade+Center,+Suit+706+Siddiq+Trade+Center,+Main+Blvd+Gulberg,+Block+H+Gulberg+III,+Lahore,+Punjab,+Pakistan/@31.5313297,74.3526346,3401a,13.1y/data\\u003d!4m2!3m1!1s0x391904e4af9b1e35:0xee6f3c848c9e5341\",1,null,null,null,null,null,
...
打开缩短的URL。恕我直言更好(但稍微慢一点)的方法是将从HttpUrlConnection
收到的“部分扩展”URL传递到HttpUrlConnection.getURL()
并从其地址线获得“完全扩展”的URL。所以,有完整的源代码:
WebView
和public class MainActivity extends AppCompatActivity implements OnMapReadyCallback {
private GoogleMap mGoogleMap;
private MapFragment mMapFragment;
private WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// configure WebView
System.setProperty("http.agent", ""); // reset default User-Agent
mWebView = (WebView) findViewById(R.id.web_view);
mWebView.setVisibility(View.GONE);
mWebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
// skip non-"ful expanded" urls
if (isUrlFullExpanded(url)) {
// extract lat/lng coordinates from "full expanded" URL String
LatLng latLng = getLatLngFromExpandedUrl(url);
// just show marker with extracted coordinates for test
onLatLngReceived(latLng);
}
}
});
mWebView.getSettings().setJavaScriptEnabled(true);
mMapFragment = (MapFragment) getFragmentManager()
.findFragmentById(R.id.map_fragment);
mMapFragment.getMapAsync(this);
// start get LatLng from URL coordinates task
new GetLocationURL().execute(new String[] {"https://maps.app.goo.gl/eEhh3"});
}
private LatLng getLatLngFromExpandedUrl(String url) {
final String beginMarker = "/@";
final String endMarker = "/";
final int ixCoordsStart = url.indexOf(beginMarker) + beginMarker.length();
final int ixCoordsEnd = url.indexOf(endMarker, ixCoordsStart);
String coordinatesString = url.substring(ixCoordsStart, ixCoordsEnd);
LatLng latLng = null;
if (!TextUtils.isEmpty(coordinatesString)) {
String[] coords = coordinatesString.split(",");
if (coords.length >= 2) {
latLng = new LatLng(Float.parseFloat(coords[0]), Float.parseFloat(coords[1]));
}
}
return latLng;
}
private boolean isUrlFullExpanded(String url) {
return url.indexOf("place/") > -1 && url.indexOf("place//") == -1 && url.indexOf("/@") > -1;
}
private void onLatLngReceived(LatLng latLng) {
if (mGoogleMap != null && latLng != null) {
mGoogleMap.addMarker(new MarkerOptions().position(latLng));
mGoogleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 16));
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
}
private class GetLocationURL extends AsyncTask<String, Void, String> {
protected void onPreExecute() {
super.onPreExecute();
}
protected String doInBackground(String... params) {
String locationUrl = null;
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
URL url = new URL(params[0]);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.connect();
// you can analyze response code
//int responseCode = connection.getResponseCode();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuilder responseStringBuilder = new StringBuilder();
String line = "";
while ((line = reader.readLine()) != null) {
responseStringBuilder.append(line);
}
// use commented code below if you want to get coordinates directly from HttpURLConnection response
/*
LatLng latLng = null;
String responseString = responseStringBuilder.toString();
String pattern = "\\\"https://www.google.com/maps/preview/place";
int ixPlaceStart = responseString.indexOf(pattern);
if (ixPlaceStart > -1) {
int ixCoordsStart = responseString.indexOf("@", ixPlaceStart) + 1;
int ixCoordsEnd = responseString.indexOf("/", ixCoordsStart);
String coordinatesString = responseString.substring(ixCoordsStart, ixCoordsEnd);
String[] coords = coordinatesString.split(",");
// latLng - coordinates from URL
latLng = new LatLng(Float.parseFloat(coords[0]), Float.parseFloat(coords[1]));
}
*/
locationUrl = connection.getURL().toString();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect();
}
try {
if (reader != null) {
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return locationUrl;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
// pass redirected "partially expandeded" URL to WebView
mWebView.loadUrl(result);
}
}
}
:
activity_main.xml
你可以得到这样的东西:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="<YOUR_PACKAGE>.MainActivity">
<fragment
android:id="@+id/map_fragment"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<WebView
android:id="@+id/web_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
NB! Google可以随时更改所描述的行为。