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Due to this bug http://code.google.com/p/android/issues/detail?id=8816 google's Geocoder class does not function.

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I found ReverseGeocode.java in one of the comments mentioning that it is a work around. i made a method getAddressFromLocation() that will do the job base on this source.
This commit is contained in:
Ricky Barrette
2011-01-31 17:57:17 +00:00
parent 4c624a34e3
commit d654b1a1f8
5 changed files with 173 additions and 6 deletions
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7
TravelPost/src/com/TwentyCodes/android/TravelPost/LocationReceiver.java
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@@ -14,7 +14,6 @@ import android.location.Location;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.util.Log;
import android.widget.Toast;
/**
* The broadcast receiver that works with LocationService.java
@@ -46,12 +45,14 @@ public class LocationReceiver extends BroadcastReceiver{
*/
private void onLocationUpdate(Location location) {
//TODO something with the location i.e. report location to social services like twitter, ect...
try {
Log.d(TravelPost.TAG, TwitterServices.tweet(mContext, location.getLatitude() +", "+ location.getLongitude() +" ± "+ location.getAccuracy()+"m").toString());
Log.d(TravelPost.TAG, TwitterServices.tweet(mContext, ReverseGeocode.getAddressFromLocation(location)).toString());
} catch (TwitterException e) {
Toast.makeText(mContext, e.getMessage(), Toast.LENGTH_LONG);
// TODO Auto-generated catch block
e.printStackTrace();
}
removeWakeLock();
}

166
TravelPost/src/com/TwentyCodes/android/TravelPost/ReverseGeocode.java Normal file
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@@ -0,0 +1,166 @@
/*
Apparently geocoder is not working with the Emulated android. This is a workaround.
Here is how I implemented it:
try {
possibleAddresses = g.getFromLocation(location.getLatitude(), location.getLongitude(), 3);
} catch (IOException e) {
if("sdk".equals( Build.PRODUCT )) {
Log.d(TAG, "Geocoder doesn't work under emulation.");
possibleAddresses = ReverseGeocode.getFromLocation(location.getLatitude(), location.getLongitude(), 3);
} else
e.printStackTrace();
}
*/
package com.TwentyCodes.android.TravelPost;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.location.Address;
import android.location.Location;
import android.util.Log;
/**
* Due to this bug http://code.google.com/p/android/issues/detail?id=8816 google's Geocoder class does not function.
* I found this source in one of the comments mentioning that it is a work around
*
* @author ricky barrette
*/
public class ReverseGeocode {
public static List<Address> getFromLocation(double lat, double lon, int maxResults) {
String urlStr = "http://maps.google.com/maps/geo?q=" + lat + "," + lon + "&output=json&sensor=false";
String response = "";
List<Address> results = new ArrayList<Address>();
HttpClient client = new DefaultHttpClient();
Log.d("ReverseGeocode", urlStr);
try {
HttpResponse hr = client.execute(new HttpGet(urlStr));
HttpEntity entity = hr.getEntity();
BufferedReader br = new BufferedReader(new InputStreamReader(entity.getContent()));
String buff = null;
while ((buff = br.readLine()) != null)
response += buff;
} catch (IOException e) {
e.printStackTrace();
}
JSONArray responseArray = null;
try {
JSONObject jsonObject = new JSONObject(response);
responseArray = jsonObject.getJSONArray("Placemark");
} catch (JSONException e) {
return results;
}
Log.d("ReverseGeocode", "" + responseArray.length() + " result(s)");
for(int i = 0; i < responseArray.length() && i < maxResults-1; i++) {
Address addy = new Address(Locale.getDefault());
try {
JSONObject jsl = responseArray.getJSONObject(i);
String addressLine = jsl.getString("address");
if(addressLine.contains(","))
addressLine = addressLine.split(",")[0];
addy.setAddressLine(0, addressLine);
jsl = jsl.getJSONObject("AddressDetails").getJSONObject("Country");
addy.setCountryName(jsl.getString("CountryName"));
addy.setCountryCode(jsl.getString("CountryNameCode"));
jsl = jsl.getJSONObject("AdministrativeArea");
addy.setAdminArea(jsl.getString("AdministrativeAreaName"));
jsl = jsl.getJSONObject("SubAdministrativeArea");
addy.setSubAdminArea(jsl.getString("SubAdministrativeAreaName"));
jsl = jsl.getJSONObject("Locality");
addy.setLocality(jsl.getString("LocalityName"));
addy.setPostalCode(jsl.getJSONObject("PostalCode").getString("PostalCodeNumber"));
addy.setThoroughfare(jsl.getJSONObject("Thoroughfare").getString("ThoroughfareName"));
} catch (JSONException e) {
e.printStackTrace();
continue;
}
results.add(addy);
}
return results;
}
/**
* This is the hacked up method from above the will only return the string address of the first search result
* @param lat
* @param lon
* @return string address, or lat, lon if search fails
* @author ricky barrette
*/
public static String getAddressFromLocation(Location location) {
String urlStr = "http://maps.google.com/maps/geo?q=" + location.getLatitude() + "," + location.getLongitude() + "&output=json&sensor=false";
String response = "";
HttpClient client = new DefaultHttpClient();
Log.d("ReverseGeocode", urlStr);
try {
HttpResponse hr = client.execute(new HttpGet(urlStr));
HttpEntity entity = hr.getEntity();
BufferedReader br = new BufferedReader(new InputStreamReader(entity.getContent()));
String buff = null;
while ((buff = br.readLine()) != null)
response += buff;
} catch (IOException e) {
e.printStackTrace();
}
Log.d("ReverseGeocode", response);
JSONArray responseArray = null;
try {
JSONObject jsonObject = new JSONObject(response);
responseArray = jsonObject.getJSONArray("Placemark");
} catch (JSONException e) {
return location.getLatitude() +", "+ location.getLongitude() +" ± "+ location.getAccuracy()+"m";
}
Log.d("ReverseGeocode", "" + responseArray.length() + " result(s)");
try {
JSONObject jsl = responseArray.getJSONObject(0);
return jsl.getString("address");
} catch (JSONException e) {
e.printStackTrace();
}
return location.getLatitude() +", "+ location.getLongitude() +" ± "+ location.getAccuracy()+"m";
}
}

3
TravelPost/src/com/TwentyCodes/android/TravelPost/TwitterServices.java
View File

@@ -42,8 +42,7 @@ public class TwitterServices {
*/
public static Status tweet(Context context, String msg) throws TwitterException{
shared_prefs = context.getSharedPreferences(TravelPost.SETTINGS, 0);
// Log.d(TravelPost.TAG, shared_prefs.getString(TWITTER_AUTH_TOKEN, ""));
// Log.d(TravelPost.TAG, shared_prefs.getString(TWITTER_AUTH_SECRET, ""));
Log.d(TravelPost.TAG, "Tweeting: "+ msg);
ConfigurationBuilder cb = new ConfigurationBuilder();
cb.setDebugEnabled(true);
cb.setOAuthConsumerKey(TC_TEST_OAUTH_KEY);