1 package org.average.whereami;
3 import org.average.whereami.APIBase;
4 import org.average.whereami.PersistentStore;
5 import org.average.whereami.SayWhen;
8 import java.io.IOException;
10 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
11 import com.google.api.client.http.HttpResponseException;
12 import com.google.api.services.latitude.Latitude;
13 import com.google.api.services.latitude.LatitudeRequest;
14 import com.google.api.services.latitude.model.Location;
16 import android.content.Context;
17 import android.content.res.Resources;
18 import android.text.format.Time;
19 import android.util.Log;
21 public final class LastLocation extends Oracle {
23 final String TAG = getClass().getName();
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 registered;
31 private SayWhen sayWhen;
32 private Latitude latitude;
34 public LastLocation(APIBase base) {
36 loc_names = base.res.getStringArray(R.array.loc_names);
37 loc_lats = base.res.getStringArray(R.array.loc_lats);
38 loc_lons = base.res.getStringArray(R.array.loc_lons);
39 loc_dists = base.res.getStringArray(R.array.loc_dists);
40 myname = base.res.getString(R.string.myname);
41 registered = base.res.getString(R.string.registered);
42 sayWhen = new SayWhen(base.res);
43 latitude = Latitude.builder(base.httpTransport,
45 .setHttpRequestInitializer(
46 base.accessProtectedResource)
47 .setApplicationName("WhereAmI/1.0").build();
51 public final String getResult() {
53 Log.v(TAG, "entering getResult");
54 Latitude.CurrentLocation.Get request =
55 latitude.currentLocation().get();
56 request.setGranularity("best");
57 Location cloc = request.execute();
58 Double lat = Double.parseDouble(
59 cloc.getLatitude().toString());
60 Double lon = Double.parseDouble(
61 cloc.getLongitude().toString());
62 Long tsm = Long.parseLong(
63 cloc.getTimestampMs().toString());
64 return locationMessage(lat, lon, tsm);
65 } catch (GoogleJsonResponseException e) {
66 Log.e(TAG, "GoogleJsonResponseException: " + e);
67 if (e.getResponse().getStatusCode() == 401) {
68 return base.authErrorMessage;
70 return e.getMessage();
72 } catch (HttpResponseException e) {
73 Log.e(TAG, "HttpResponseException: " + e);
74 return e.getMessage();
75 } catch (IOException e) {
77 return e.getMessage();
81 private String locationMessage(Double lat, Double lon, Long tsm) {
82 Log.v(TAG, "entering locationMessage(" + lat +
83 "," + lon + "," + tsm + ")");
84 String locmsg = "<UNSET>";
85 String agomsg = "<UNSET>";
86 for (int i = 0; i < loc_names.length; i++) {
87 Double dist = haversine(lat, lon,
88 Double.parseDouble(loc_lats[i]),
89 Double.parseDouble(loc_lons[i]));
90 Log.v(TAG, "Dist from " + loc_names[i] +
92 if ((loc_dists[i] == "0") ||
93 (dist < Double.parseDouble(loc_dists[i]))) {
94 locmsg = loc_names[i];
98 return myname + " " + locmsg + ", " + registered +
99 " " + sayWhen.say(tsm);
102 private Double toRad(Double deg) {
103 return deg * 3.14159265 / 180;
106 private Double haversine(Double lat1, Double lon1,
107 Double lat2, Double lon2) {
108 Double dlat = toRad(lat2 - lat1);
109 Double dlon = toRad(lon2 - lon1);
110 Double a = Math.sin(dlat / 2) * Math.sin(dlat / 2) +
111 Math.sin(dlon / 2) * Math.sin(dlon / 2) *
112 Math.cos(toRad(lat1)) * Math.cos(toRad(lat2));
113 Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));