1 package org.average.whereami;
3 import org.average.whereami.PersistentStore;
6 import java.io.IOException;
8 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
9 import com.google.api.client.http.HttpResponseException;
10 import com.google.api.services.latitude.Latitude;
11 import com.google.api.services.latitude.LatitudeRequest;
12 import com.google.api.services.latitude.model.Location;
14 import android.content.Context;
15 import android.content.res.Resources;
16 import android.text.format.Time;
17 import android.util.Log;
19 public final class LastLocation extends Oracle {
21 final String TAG = getClass().getName();
23 private Latitude latitude;
25 private String[] loc_names;
26 private String[] loc_lats;
27 private String[] loc_lons;
28 private String[] loc_dists;
29 private String myname;
30 private String timestamp;
31 private String longago;
32 private String lessthanhour;
33 private String onehour;
34 private String hours2to4;
35 private String hours5up;
37 public LastLocation(final Resources res, final PersistentStore store) {
39 loc_names = res.getStringArray(R.array.loc_names);
40 loc_lats = res.getStringArray(R.array.loc_lats);
41 loc_lons = res.getStringArray(R.array.loc_lons);
42 loc_dists = res.getStringArray(R.array.loc_dists);
43 myname = res.getString(R.string.myname);
44 timestamp = res.getString(R.string.timestamp);
45 longago = res.getString(R.string.longago);
46 lessthanhour = res.getString(R.string.lessthanhour);
47 onehour = res.getString(R.string.onehour);
48 hours2to4 = res.getString(R.string.hours2to4);
49 hours5up = res.getString(R.string.hours5up);
51 latitude = Latitude.builder(httpTransport, jsonFactory)
52 .setHttpRequestInitializer(accessProtectedResource)
53 .setApplicationName("WhereAmI/1.0").build();
57 public final String getResult() {
59 Log.v(TAG, "entering getResult");
60 Latitude.CurrentLocation.Get request =
61 latitude.currentLocation().get();
62 request.setGranularity("best");
63 Location cloc = request.execute();
64 Double lat = Double.parseDouble(
65 cloc.getLatitude().toString());
66 Double lon = Double.parseDouble(
67 cloc.getLongitude().toString());
68 Long tsm = Long.parseLong(
69 cloc.getTimestampMs().toString());
70 return locationMessage(lat, lon, tsm);
71 } catch (GoogleJsonResponseException e) {
72 Log.v(TAG, "GoogleJsonResponseException: " + e);
73 if (e.getResponse().getStatusCode() == 401) {
74 return authErrorMessage;
76 return e.getMessage();
78 } catch (HttpResponseException e) {
79 Log.v(TAG, "HttpResponseException: " + e);
80 return e.getMessage();
81 } catch (IOException e) {
83 return e.getMessage();
87 private String locationMessage(Double lat, Double lon, Long tsm) {
88 Log.v(TAG, "entering locationMessage(" + lat +
89 "," + lon + "," + tsm + ")");
90 String locmsg = "<UNSET>";
91 String agomsg = "<UNSET>";
92 for (int i = 0; i < loc_names.length; i++) {
93 Double dist = haversine(lat, lon,
94 Double.parseDouble(loc_lats[i]),
95 Double.parseDouble(loc_lons[i]));
96 Log.v(TAG, "Dist from " + loc_names[i] +
98 if ((loc_dists[i] == "0") ||
99 (dist < Double.parseDouble(loc_dists[i]))) {
100 locmsg = loc_names[i];
104 Long ago = (System.currentTimeMillis() - tsm) / 3600000;
106 agomsg = lessthanhour;
107 } else if (ago < 2) {
109 } else if (ago < 5) {
110 agomsg = "" + ago + " " + hours2to4;
111 } else if (ago < 24) {
112 agomsg = "" + ago + " " + hours5up;
116 return myname + " " + locmsg + ", " + timestamp +
120 private Double toRad(Double deg) {
121 return deg * 3.14159265 / 180;
124 private Double haversine(Double lat1, Double lon1,
125 Double lat2, Double lon2) {
126 Double dlat = toRad(lat2 - lat1);
127 Double dlon = toRad(lon2 - lon1);
128 Double a = Math.sin(dlat / 2) * Math.sin(dlat / 2) +
129 Math.sin(dlon / 2) * Math.sin(dlon / 2) *
130 Math.cos(toRad(lat1)) * Math.cos(toRad(lat2));
131 Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));