Android Reverse geocoding - getFromLocation

Question

I am trying to get an address based on the long lat  it appears that something like this should work    Geocoder myLocation   Geocoder Locale getDefault         List myList   myLocation getFromLocation latPoint lngPoint 1     The issue is that I keep getting   The method Geocoder Locale  is undefined for the type savemaplocation  Any assistance would be helpful  Thank you     Thanks  I tried the context  locale one first  and that failed and was looking at some of the other constructors  I had seen one that had mentioned just locale   Regardless   It did not work  as I am still getting   The method Geocoder Context  Locale  is undefined for the type savemaplocation  I do have   import android location Geocoder

User · Accepted Answer

The following code snippet is doing it for me  lat and lng are doubles declared above this bit    Geocoder geocoder   new Geocoder this  Locale getDefault     List lt Address gt  addresses   geocoder getFromLocation lat  lng  1

User · Answer

It looks like there s two things happening here   1  You ve missed the new keyword from before calling the constructor   2  The parameter you re passing in to the Geocoder constructor is incorrect  You re passing in a Locale where it s expecting a Context   There are two Geocoder constructors  both of which require a Context  and one also taking a Locale   Geocoder Context context  Locale locale  Geocoder Context context    Solution  Modify your code to pass in a valid Context and include new and you should be good to go   Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault        List lt Address gt  myList   myLocation getFromLocation latPoint  lngPoint  1     Note  If you re still having problems it may be a permissioning issue  Geocoding implicitly uses the Internet to perform the lookups  so your application will require an INTERNET uses-permission tag in your manifest    Add the following uses-permission node within the manifest node of your manifest    lt uses-permission android name  android permission INTERNET    gt

User · Answer

The reason for this is the non-existent Backend Service           The Geocoder class requires a backend service that is not included in the core android framework  The Geocoder query methods will return an empty list if there no backend service in the platform

User · Answer

It looks like there s two things happening here   1  You ve missed the new keyword from before calling the constructor   2  The parameter you re passing in to the Geocoder constructor is incorrect  You re passing in a Locale where it s expecting a Context   There are two Geocoder constructors  both of which require a Context  and one also taking a Locale   Geocoder Context context  Locale locale  Geocoder Context context    Solution  Modify your code to pass in a valid Context and include new and you should be good to go   Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault        List lt Address gt  myList   myLocation getFromLocation latPoint  lngPoint  1     Note  If you re still having problems it may be a permissioning issue  Geocoding implicitly uses the Internet to perform the lookups  so your application will require an INTERNET uses-permission tag in your manifest    Add the following uses-permission node within the manifest node of your manifest    lt uses-permission android name  android permission INTERNET    gt

User · Answer

It looks like there s two things happening here   1  You ve missed the new keyword from before calling the constructor   2  The parameter you re passing in to the Geocoder constructor is incorrect  You re passing in a Locale where it s expecting a Context   There are two Geocoder constructors  both of which require a Context  and one also taking a Locale   Geocoder Context context  Locale locale  Geocoder Context context    Solution  Modify your code to pass in a valid Context and include new and you should be good to go   Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault        List lt Address gt  myList   myLocation getFromLocation latPoint  lngPoint  1     Note  If you re still having problems it may be a permissioning issue  Geocoding implicitly uses the Internet to perform the lookups  so your application will require an INTERNET uses-permission tag in your manifest    Add the following uses-permission node within the manifest node of your manifest    lt uses-permission android name  android permission INTERNET    gt

User · Answer

Here is a full example code using a Thread and a Handler to get the Geocoder answer without blocking the UI   Geocoder call procedure  can be located in a Helper class  public static void getAddressFromLocation          final Location location  final Context context  final Handler handler        Thread thread   new Thread              Override public void run                 Geocoder geocoder   new Geocoder context  Locale getDefault                    String result   null              try                   List lt Address gt  list   geocoder getFromLocation                          location getLatitude    location getLongitude    1                   if  list    null  amp  amp  list size    gt  0                        Address address   list get 0                          sending back first address line and locality                     result   address getAddressLine 0           address getLocality                                    catch  IOException e                    Log e TAG   Impossible to connect to Geocoder   e                 finally                   Message msg   Message obtain                    msg setTarget handler                   if  result    null                        msg what   1                      Bundle bundle   new Bundle                        bundle putString  address   result                       msg setData bundle                     else                      msg what   0                  msg sendToTarget                                       thread start        Here is the call to this Geocoder procedure in your UI Activity   getAddressFromLocation mLastKownLocation  this  new GeocoderHandler       And the handler to show the results in your UI   private class GeocoderHandler extends Handler        Override     public void handleMessage Message message            String result          switch  message what            case 1              Bundle bundle   message getData                result   bundle getString  address                break          default              result   null                       replace by what you need to do         myLabel setText result                Don t forget to put the following permission in your Manifest xml   lt uses-permission android name  android permission INTERNET    gt

User · Answer

Here is a full example code using a Thread and a Handler to get the Geocoder answer without blocking the UI   Geocoder call procedure  can be located in a Helper class  public static void getAddressFromLocation          final Location location  final Context context  final Handler handler        Thread thread   new Thread              Override public void run                 Geocoder geocoder   new Geocoder context  Locale getDefault                    String result   null              try                   List lt Address gt  list   geocoder getFromLocation                          location getLatitude    location getLongitude    1                   if  list    null  amp  amp  list size    gt  0                        Address address   list get 0                          sending back first address line and locality                     result   address getAddressLine 0           address getLocality                                    catch  IOException e                    Log e TAG   Impossible to connect to Geocoder   e                 finally                   Message msg   Message obtain                    msg setTarget handler                   if  result    null                        msg what   1                      Bundle bundle   new Bundle                        bundle putString  address   result                       msg setData bundle                     else                      msg what   0                  msg sendToTarget                                       thread start        Here is the call to this Geocoder procedure in your UI Activity   getAddressFromLocation mLastKownLocation  this  new GeocoderHandler       And the handler to show the results in your UI   private class GeocoderHandler extends Handler        Override     public void handleMessage Message message            String result          switch  message what            case 1              Bundle bundle   message getData                result   bundle getString  address                break          default              result   null                       replace by what you need to do         myLabel setText result                Don t forget to put the following permission in your Manifest xml   lt uses-permission android name  android permission INTERNET    gt

User · Answer

Use this  Geocoder geocoder   new Geocoder this  Locale getDefault     List lt Address gt  addresses   geocoder getFromLocation lat  lng  1

User · Answer

I ve heard that Geocoder is on the buggy side   I recently put together an example application that uses Google s http geocoding service to lookup location from lat long  Feel free to check it out here  http   www smnirven com  p 39

User · Answer

First get Latitude and Longitude using Location and LocationManager class  Now try the code below for Get the city address info  double latitude   location getLatitude    double longitude   location getLongitude    Geocoder gc   new Geocoder this  Locale getDefault     try       List lt Address gt  addresses   gc getFromLocation lat  lng  1       StringBuilder sb   new StringBuilder        if  addresses size    gt  0            Address address   addresses get 0           for  int i   0  i  lt  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             City info is now in sb  Now convert the sb to String  using sb toString

User · Answer

The reason for this is the non-existent Backend Service           The Geocoder class requires a backend service that is not included in the core android framework  The Geocoder query methods will return an empty list if there no backend service in the platform

User · Answer

Well  I am still stumped   So here is more code    Before I leave my map  I call SaveLocation myMapView myMapController   This is what ends up calling my geocoding information   But since getFromLocation can throw an IOException  I had to do the following to call SaveLocation  try       SaveLocation myMapView myMapController     catch  IOException e            TODO Auto-generated catch block     e printStackTrace        Then I have to change SaveLocation by saying it throws IOExceptions      public void SaveLocation MapView mv  MapController mc  throws IOException        I do this        Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault            List myList   myLocation getFromLocation latPoint  lngPoint  1                 And it crashes every time

User · Answer

First get Latitude and Longitude using Location and LocationManager class  Now try the code below for Get the city address info  double latitude   location getLatitude    double longitude   location getLongitude    Geocoder gc   new Geocoder this  Locale getDefault     try       List lt Address gt  addresses   gc getFromLocation lat  lng  1       StringBuilder sb   new StringBuilder        if  addresses size    gt  0            Address address   addresses get 0           for  int i   0  i  lt  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             City info is now in sb  Now convert the sb to String  using sb toString

User · Answer

Well  I am still stumped   So here is more code    Before I leave my map  I call SaveLocation myMapView myMapController   This is what ends up calling my geocoding information   But since getFromLocation can throw an IOException  I had to do the following to call SaveLocation  try       SaveLocation myMapView myMapController     catch  IOException e            TODO Auto-generated catch block     e printStackTrace        Then I have to change SaveLocation by saying it throws IOExceptions      public void SaveLocation MapView mv  MapController mc  throws IOException        I do this        Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault            List myList   myLocation getFromLocation latPoint  lngPoint  1                 And it crashes every time

User · Answer

I ve heard that Geocoder is on the buggy side   I recently put together an example application that uses Google s http geocoding service to lookup location from lat long  Feel free to check it out here  http   www smnirven com  p 39

User · Answer

Use this  Geocoder geocoder   new Geocoder this  Locale getDefault     List lt Address gt  addresses   geocoder getFromLocation lat  lng  1

User · Answer

Well  I am still stumped   So here is more code    Before I leave my map  I call SaveLocation myMapView myMapController   This is what ends up calling my geocoding information   But since getFromLocation can throw an IOException  I had to do the following to call SaveLocation  try       SaveLocation myMapView myMapController     catch  IOException e            TODO Auto-generated catch block     e printStackTrace        Then I have to change SaveLocation by saying it throws IOExceptions      public void SaveLocation MapView mv  MapController mc  throws IOException        I do this        Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault            List myList   myLocation getFromLocation latPoint  lngPoint  1                 And it crashes every time

User · Answer

Well  I am still stumped   So here is more code    Before I leave my map  I call SaveLocation myMapView myMapController   This is what ends up calling my geocoding information   But since getFromLocation can throw an IOException  I had to do the following to call SaveLocation  try       SaveLocation myMapView myMapController     catch  IOException e            TODO Auto-generated catch block     e printStackTrace        Then I have to change SaveLocation by saying it throws IOExceptions      public void SaveLocation MapView mv  MapController mc  throws IOException        I do this        Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault            List myList   myLocation getFromLocation latPoint  lngPoint  1                 And it crashes every time

User · Answer

It looks like there s two things happening here   1  You ve missed the new keyword from before calling the constructor   2  The parameter you re passing in to the Geocoder constructor is incorrect  You re passing in a Locale where it s expecting a Context   There are two Geocoder constructors  both of which require a Context  and one also taking a Locale   Geocoder Context context  Locale locale  Geocoder Context context    Solution  Modify your code to pass in a valid Context and include new and you should be good to go   Geocoder myLocation   new Geocoder getApplicationContext    Locale getDefault        List lt Address gt  myList   myLocation getFromLocation latPoint  lngPoint  1     Note  If you re still having problems it may be a permissioning issue  Geocoding implicitly uses the Internet to perform the lookups  so your application will require an INTERNET uses-permission tag in your manifest    Add the following uses-permission node within the manifest node of your manifest    lt uses-permission android name  android permission INTERNET    gt

[android] Android: Reverse geocoding - getFromLocation

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