public static List<LocationSearchResult> findLocationsAutocomplete(String startsWith) {
LOGD(TAG, "Autocompleting locations starting with '" + startsWith + "'");
List<LocationSearchResult> results = new ArrayList<LocationSearchResult>();
HttpURLConnection connection = null;
try {
connection = Utils.openUrlConnection(buildPlaceSearchStartsWithUrl(startsWith));
XmlPullParser xpp = sXmlPullParserFactory.newPullParser();
xpp.setInput(new InputStreamReader(connection.getInputStream()));
LocationSearchResult result = null;
// See above method 'getLocationNameFromCoords'.
String[] addrs = {"", "", "", "", "", ""};
int state = PARSE_STATE_NONE;
// latitude and longitude values are shown in many entries.
// But values in <centroid>, not in <boundingBox> are relatively exact one.
// So using this flag, get only values in centroid entry.
boolean centroid = false;
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
String tagName = xpp.getName();
if (eventType == XmlPullParser.START_TAG) {
switch (state) {
case PARSE_STATE_NONE:
if ("place".equals(tagName)) {
state = PARSE_STATE_PLACE;
result = new LocationSearchResult();
// reset
for (int i = 0; i < addrs.length; i++) addrs[i] = "";
}
break;
case PARSE_STATE_PLACE:
if ("name".equals(tagName)) {
state = PARSE_STATE_NAME;
} else if ("woeid".equals(tagName)) {
state = PARSE_STATE_WOEID;
} else if ("country".equals(tagName)) {
state = PARSE_STATE_COUNTRY;
} else if ("admin1".equals(tagName)) {
state = PARSE_STATE_ADMIN1;
} else if (centroid && "latitude".equals(tagName)) {
state = PARSE_STATE_LAT;
} else if (centroid && "longitude".equals(tagName)) {
state = PARSE_STATE_LNG;
} else if ("admin2".equals(tagName)) {
state = PARSE_STATE_ADMIN2;
} else if ("admin3".equals(tagName)) {
state = PARSE_STATE_ADMIN3;
} else if ("centroid".equals(tagName)) {
// We use lat/lon values in <centroid> entry.
centroid = true;
}
break;
}
} else if (eventType == XmlPullParser.TEXT) {
switch (state) {
case PARSE_STATE_WOEID:
result.woeid = xpp.getText();
break;
case PARSE_STATE_NAME:
addrs[0] = xpp.getText();
break;
case PARSE_STATE_ADMIN3:
addrs[1] = xpp.getText();
break;
case PARSE_STATE_ADMIN2:
addrs[2] = xpp.getText();
break;
case PARSE_STATE_ADMIN1:
addrs[3] = xpp.getText();
break;
case PARSE_STATE_COUNTRY:
addrs[4] = xpp.getText();
break;
case PARSE_STATE_LAT:
result.lat = xpp.getText();
break;
case PARSE_STATE_LNG:
result.lng = xpp.getText();
}
} else if (eventType == XmlPullParser.END_TAG) {
if ("place".equals(tagName)) {
String smallLocation = "";
String largeLocation = "";
for (int i = 0; i < addrs.length; i++) {
if (TextUtils.isEmpty(addrs[i])) {
continue;
} else {
smallLocation = addrs[i];
for (int j = i + 1; j < addrs.length; j++) {
if (TextUtils.isEmpty(addrs[j])) {
continue;
}
if (!smallLocation.equals(addrs[j])) {
largeLocation = addrs[j];
break;
}
}
if (!TextUtils.isEmpty(largeLocation)) {
largeLocation = ", " + largeLocation;
}
break;
}
}
result.displayName = smallLocation + largeLocation;
result.country = addrs[4];
results.add(result);
state = PARSE_STATE_NONE;
} else if ("centroid".equals(tagName)) {
centroid = false;
} else if (state != PARSE_STATE_NONE) {
state = PARSE_STATE_PLACE;
}
}
eventType = xpp.next();
}
} catch (IOException e) {
LOGW(TAG, "Error parsing place search XML");
} catch (XmlPullParserException e) {
LOGW(TAG, "Error parsing place search XML");
} finally {
if (connection != null) {
connection.disconnect();
}
}
return results;
}
public static String getLocationNameFromCoords(double lat, double lng) {
LOGD(TAG, "Looking up name for location : " + lat + ", " + lng);
String displayName = "N/A";
// reset WOEID.
sWoeid = "";
HttpURLConnection connection = null;
try {
Location tempLoc = new Location("");
tempLoc.setLatitude(lat);
tempLoc.setLongitude(lng);
connection = Utils.openUrlConnection(buildPlaceSearchUrl(tempLoc));
XmlPullParser xpp = sXmlPullParserFactory.newPullParser();
xpp.setInput(new InputStreamReader(connection.getInputStream()));
// addrs have {'name', 'admin3', 'admin2', 'admin1', 'country'}, small -> large.
// Not so few places have empty *local*, and/or admin* values in Yahoo place API.
// So in some cases, only one name or two names with same values was shown.
// For example, "SEOUL" or "SEOUL, SEOUL" can be removed.
// So modified algorithm to get names. Not used local fields.
// From name to country, skip empty or same value and make "small, large" form.
String[] addrs = {"", "", "", "", ""};
String smallLocation = "";
String largeLocation = "";
StringBuffer sb = new StringBuffer();
int state = PARSE_STATE_NONE;
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
String tagName = xpp.getName();
if (eventType == XmlPullParser.START_TAG) {
switch (state) {
case PARSE_STATE_NONE:
if ("place".equals(tagName)) {
state = PARSE_STATE_PLACE;
}
break;
case PARSE_STATE_PLACE:
if ("name".equals(tagName)) {
state = PARSE_STATE_NAME;
} else if ("admin1".equals(tagName)) {
state = PARSE_STATE_ADMIN1;
} else if ("admin2".equals(tagName)) {
state = PARSE_STATE_ADMIN2;
} else if ("admin3".equals(tagName)) {
state = PARSE_STATE_ADMIN3;
} else if ("country".equals(tagName)) {
state = PARSE_STATE_COUNTRY;
} else if ("woeid".equals(tagName)) {
state = PARSE_STATE_WOEID;
}
break;
}
} else if (eventType == XmlPullParser.TEXT) {
switch (state) {
case PARSE_STATE_NAME:
addrs[0] = xpp.getText();
break;
case PARSE_STATE_ADMIN3:
addrs[1] = xpp.getText();
break;
case PARSE_STATE_ADMIN2:
addrs[2] = xpp.getText();
break;
case PARSE_STATE_ADMIN1:
addrs[3] = xpp.getText();
break;
case PARSE_STATE_COUNTRY:
addrs[4] = xpp.getText();
break;
case PARSE_STATE_WOEID:
// This method 'getLocationNameFromCoords' itself doesnt need WOEID.
// But other method 'getLocationInfo' calls it and needs WOEID.
// So in this methdd, save WOEID to private static variable.
sWoeid = xpp.getText();
break;
}
} else if (eventType == XmlPullParser.END_TAG) {
if ("place".equals(tagName)) {
for (int i = 0; i < addrs.length; i++) {
if (TextUtils.isEmpty(addrs[i])) {
// if field is empty, skip.
continue;
} else {
smallLocation = addrs[i];
largeLocation = "";
for (int j = i + 1; j < addrs.length; j++) {
if (TextUtils.isEmpty(addrs[j])) {
continue;
}
if (!smallLocation.equals(addrs[j])) {
// if second name is not empty and not same with previus one
// (smallLocation) then it is to be largeLocation.
largeLocation = addrs[j];
break;
}
}
break;
}
}
sb.setLength(0);
if (!TextUtils.isEmpty(smallLocation)) {
sb.append(smallLocation);
}
if (!TextUtils.isEmpty(largeLocation)) {
if (sb.length() > 0) {
sb.append(", ");
}
sb.append(largeLocation);
}
displayName = sb.toString();
state = PARSE_STATE_NONE;
} else if (state != PARSE_STATE_NONE) {
state = PARSE_STATE_PLACE;
}
}
eventType = xpp.next();
}
} catch (XmlPullParserException xppe) {
LOGW(TAG, "Error parsing place name XML");
} catch (MalformedURLException mue) {
LOGW(TAG, "Error parsing place name XML");
} catch (IOException ioe) {
LOGW(TAG, "Error parsing place name XML");
} finally {
if (connection != null) {
connection.disconnect();
}
}
return displayName;
}
