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@timfreiheit
Created July 28, 2015 12:09
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GeoCoderWrapper in case that the normal GeoCoder is not present !GeoCoder.isPresent()
/*
* uses MyGeoCoder if !android.location.Geocoder.isPresent()
*/
public class GeoCoderWrapper {
Geocoder geo;
public GeoCoderWrapper(Context context){
if(Geocoder.isPresent()){
geo = new Geocoder(context);
}
}
public List<Address> getFromLocationName(String address) throws IOException {
if(geo != null){
try{
return geo.getFromLocationName(address, 10);
}catch(Exception e){
return MyGeoCoder.getFromLocationName(address);
}
}else{
return MyGeoCoder.getFromLocationName(address);
}
}
public List<Address> getFromLocationName(String address, int limit) throws IOException {
if(geo != null){
try{
return geo.getFromLocationName(address, limit);
}catch(Exception e){
List<Address> a = MyGeoCoder.getFromLocationName(address);
while(a.size()>limit){
a.remove(a.size()-1);
}
return a;
}
}else{
List<Address> a = MyGeoCoder.getFromLocationName(address);
while(a.size()>limit){
a.remove(a.size()-1);
}
return a;
}
}
public List<Address> getFromLocation(double lat, double lng) throws IOException {
if(geo != null){
try{
return geo.getFromLocation(lat, lng, 10);
}catch(Exception e){
return MyGeoCoder.getFromLocation(lat, lng);
}
}else{
return MyGeoCoder.getFromLocation(lat, lng);
}
}
public List<Address> getFromLocation(double lat, double lng, int limit) throws IOException {
if(geo != null){
try{
return geo.getFromLocation(lat, lng, limit);
}catch(Exception e){
List<Address> a = MyGeoCoder.getFromLocation(lat, lng);
if(a!=null){
while(a.size()>limit){
a.remove(a.size()-1);
}
}
return a;
}
}else{
List<Address> a = MyGeoCoder.getFromLocation(lat, lng);
if(a!=null){
while(a.size()>limit){
a.remove(a.size()-1);
}
}
return a;
}
}
}
import android.location.Address;
import android.util.Log;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
/*
* see https://developers.google.com/maps/documentation/geocoding/?hl=de#Audience
*/
public class MyGeoCoder {
private static final String TAG = "MyGeoCoder";
public static List<Address> getFromLocationName(String address) {
String url = null;
try {
url = String.format("http://maps.google.com/maps/api/geocode/json?address=%s&ka&sensor=true&language="+Locale.getDefault().getCountry()
, URLEncoder.encode(address, "UTF-8"));
Log.d(TAG, "url="+url);
} catch (UnsupportedEncodingException e) {
//should never happen
}
return getAddressListFromUrl(url);
}
public static List<Address> getFromLocationName(String address,String region) {
String url = null;
try {
url = String.format("http://maps.google.com/maps/api/geocode/json?address=%s&region=%s&ka&sensor=true&language="+Locale.getDefault().getCountry()
, URLEncoder.encode(address, "UTF-8"),
URLEncoder.encode(region, "UTF-8"));
Log.d(TAG, "url="+url);
} catch (UnsupportedEncodingException e) {
//should never happen
}
return getAddressListFromUrl(url);
}
public static List<Address> getFromLocation(double lat, double lng) {
String url = String
.format(Locale.ENGLISH,
"http://maps.googleapis.com/maps/api/geocode/json?latlng=%1$f,%2$f&sensor=true&language="
+ Locale.getDefault().getCountry(), lat, lng);
Log.d(TAG, "url="+url);
return getAddressListFromUrl(url);
}
private static List<Address> getAddressListFromUrl(String url) {
try {
JSONObject jsonObject = new JSONObject(getStringFromRequest(url));
Log.d(TAG, "result:"+jsonObject);
if ("OK".equalsIgnoreCase(jsonObject.getString("status"))) {
return parseJSON(jsonObject);
}
} catch (ClientProtocolException e) {
Log.e(MyGeoCoder.class.getName(),
"Error calling Google geocode webservice.", e);
} catch (IOException e) {
Log.e(MyGeoCoder.class.getName(),
"Error calling Google geocode webservice.", e);
} catch (JSONException e) {
Log.e(MyGeoCoder.class.getName(),
"Error parsing Google geocode webservice response.", e);
}
return null;
}
private static List<Address> parseJSON(JSONObject jsonRAW) throws JSONException {
JSONArray json = jsonRAW.getJSONArray("results");
List<Address> ret = new ArrayList<Address>(json.length());
for (int i = 0; i < json.length(); i++) {
JSONObject o = json.getJSONObject(i);
ret.add(parseAddress(o));
}
return ret;
}
private static Address parseAddress(JSONObject json) throws JSONException {
Address addr = new Address(Locale.getDefault());
String addressLines = json.optString("formatted_address");
if (addressLines != null) {
String[] lines = addressLines.split(", ");
for (int i = 0; i < lines.length; i++) {
addr.setAddressLine(i, lines[i]);
}
}
JSONArray address_components = json.optJSONArray("address_components");
if (address_components != null) {
for (int i = 0; i < address_components.length(); i++) {
JSONObject item = address_components.getJSONObject(i);
JSONArray types = item.optJSONArray("types");
if (types != null) {
fillType(addr, types, item);
}
}
}
JSONObject geometry = json.optJSONObject("geometry");
if (geometry != null) {
JSONObject location = geometry.optJSONObject("location");
if (location != null) {
addr.setLatitude(location.optDouble("lat"));
addr.setLongitude(location.optDouble("lng"));
if (Double.isNaN(addr.getLatitude())) {
addr.clearLatitude();
}
if (Double.isNaN(addr.getLongitude())) {
addr.clearLongitude();
}
}
}
return addr;
}
private static String getStringFromRequest(String url) throws ClientProtocolException, IOException {
HttpGet httpGet = new HttpGet(url);
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(httpGet);
return EntityUtils.toString(response.getEntity(), "UTF-8");
}
private static void fillType(Address addr, JSONArray types, JSONObject json) throws JSONException {
String long_name = json.optString("long_name");
String short_name = json.optString("short_name");
if (long_name == null) {
long_name = short_name;
}
if (short_name == null) {
short_name = long_name;
}
if (short_name == null) {
return;
}
if (hasType(types, "postal_code")) {
addr.setPostalCode(short_name);
} else if (hasType(types, "country")) {
addr.setCountryName(long_name);
addr.setCountryCode(short_name);
} else if (hasType(types, "locality")) {
addr.setLocality(long_name);
} else if (hasType(types, "administrative_area_level_1")) {
addr.setAdminArea(long_name);
} else if (hasType(types, "administrative_area_level_2")) {
addr.setSubAdminArea(long_name);
} else if (hasType(types, "point_of_interest")) {
addr.setFeatureName(long_name);
} else if (hasType(types, "premise")) {
addr.setPremises(long_name);
} else if (hasType(types, "sublocality")) {
addr.setSubLocality(long_name);
} else if (hasType(types, "route")) {
addr.setThoroughfare(long_name);
} else if (hasType(types, "street_number")) {
addr.setFeatureName(long_name);
}
}
private static boolean hasType(JSONArray types, String type) throws JSONException {
for (int i = 0; i < types.length(); i++) {
if (type.equals(types.getString(i))) {
return true;
}
}
return false;
}
}
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