src/org/average/whereami/LastLocation.java

   1 package org.average.whereami;
   2
   3 import org.average.whereami.CredentialStore;
   4
   5 //import java.lang.Long;
   6
   7 import com.google.api.client.extensions.android2.AndroidHttp;
   8 import com.google.api.client.auth.oauth2.draft10.AccessTokenResponse;
   9 import com.google.api.client.googleapis.auth.oauth2.draft10.GoogleAccessProtectedResource;
  10 import com.google.api.client.http.HttpResponseException;
  11 import com.google.api.client.http.HttpTransport;
  12 import com.google.api.client.http.javanet.NetHttpTransport;
  13 import com.google.api.client.json.JsonFactory;
  14 import com.google.api.client.json.jackson.JacksonFactory;
  15 import com.google.api.services.latitude.Latitude;
  16 import com.google.api.services.latitude.LatitudeRequest;
  17 import com.google.api.services.latitude.model.Location;
  18
  19 import android.content.Context;
  20 import android.content.SharedPreferences;
  21 import android.util.Log;
  22
  23 public final class LastLocation extends Oracle {
  24
  25         final String TAG = getClass().getName();
  26
  27         private Latitude latitude;
  28
  29         public LastLocation(final CredentialStore store) {
  30                 HttpTransport transport = AndroidHttp.newCompatibleTransport();
  31                 JsonFactory jsonFactory = new JacksonFactory();
  32                 AccessTokenResponse token = store.read();
  33                 Log.v(TAG, "tokens - access: \"" + token.accessToken +
  34                         "\", refresh: \"" + token.refreshToken +
  35                         "\", client_id: \"" + ClientCredentials.CLIENT_ID +
  36                         "\", client_secret: \"" +
  37                                         ClientCredentials.CLIENT_SECRET +
  38                         "\"");
  39                 GoogleAccessProtectedResource accessProtectedResource =
  40                         new GoogleAccessProtectedResource(
  41                                 token.accessToken,
  42                                 transport, jsonFactory,
  43                                 ClientCredentials.CLIENT_ID,
  44                                 ClientCredentials.CLIENT_SECRET,
  45                                 token.refreshToken)
  46                                 {
  47                                         @Override
  48                                         public void onAccessToken(
  49                                                         String accessToken) {
  50                                                 Log.v(TAG, "Update access token to \"" + accessToken + "\"");
  51                                                 store.updateAccessToken(
  52                                                         accessToken);
  53                                         }
  54                                 }
  55                                 ;
  56                 Latitude.Builder lbldr = Latitude.builder(transport,
  57                                                                 jsonFactory);
  58                 lbldr.setHttpRequestInitializer(accessProtectedResource);
  59                 lbldr.setApplicationName("WhereAmI/1.0");
  60                 latitude = lbldr.build();
  61         }
  62
  63         @Override
  64         public final String getResult() {
  65                 try {
  66                         Log.v(TAG, "entering getResult");
  67                         Latitude.CurrentLocation.Get request =
  68                                 latitude.currentLocation().get();
  69                         request.setGranularity("best");
  70                         Location cloc = request.execute();
  71                         Double lat = Double.parseDouble(
  72                                         cloc.getLatitude().toString());
  73                         Double lon = Double.parseDouble(
  74                                         cloc.getLongitude().toString());
  75                         Long tsm = Long.parseLong(
  76                                         cloc.getTimestampMs().toString());
  77                         return locationMessage(lat, lon, tsm);
  78                 } catch (Exception ex) {
  79                         Log.v(TAG, "exception in getResult: " + ex);
  80                         ex.printStackTrace();
  81                         return ex.getMessage();
  82                 }
  83         }
  84
  85         private String locationMessage(Double lat, Double lon, Long tsm) {
  86                 Log.v(TAG, "entering locationMessage(" + lat +
  87                                 "," + lon + "," + tsm + ")");
  88                 return "Location: " + lat + "N " + lon + "E at " + tsm/1000;
  89         }
  90 }