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package com.android.contacts.common.location;
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.preference.PreferenceManager;
import android.util.Log;
import java.io.IOException;
import java.util.List;
/**
* Service used to perform asynchronous geocoding from within a broadcast receiver. Given a
* {@link Location}, convert it into a country code, and save it in shared preferences.
*/
public class UpdateCountryService extends IntentService {
private static final String TAG = UpdateCountryService.class.getSimpleName();
private static final String ACTION_UPDATE_COUNTRY = "saveCountry";
private static final String KEY_INTENT_LOCATION = "location";
public UpdateCountryService() {
super(TAG);
}
public static void updateCountry(Context context, Location location) {
final Intent serviceIntent = new Intent(context, UpdateCountryService.class);
serviceIntent.setAction(ACTION_UPDATE_COUNTRY);
serviceIntent.putExtra(UpdateCountryService.KEY_INTENT_LOCATION, location);
context.startService(serviceIntent);
}
@Override
protected void onHandleIntent(Intent intent) {
if (ACTION_UPDATE_COUNTRY.equals(intent.getAction())) {
final Location location = (Location) intent.getParcelableExtra(KEY_INTENT_LOCATION);
final String country = getCountryFromLocation(getApplicationContext(), location);
if (country == null) {
return;
}
final SharedPreferences prefs =
PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
final Editor editor = prefs.edit();
editor.putLong(CountryDetector.KEY_PREFERENCE_TIME_UPDATED,
System.currentTimeMillis());
editor.putString(CountryDetector.KEY_PREFERENCE_CURRENT_COUNTRY, country);
editor.commit();
}
}
/**
* Given a {@link Location}, return a country code.
*
* @return the ISO 3166-1 two letter country code
*/
private String getCountryFromLocation(Context context, Location location) {
final Geocoder geocoder = new Geocoder(context);
String country = null;
try {
final List<Address> addresses = geocoder.getFromLocation(
location.getLatitude(), location.getLongitude(), 1);
if (addresses != null && addresses.size() > 0) {
country = addresses.get(0).getCountryCode();
}
} catch (IOException e) {
Log.w(TAG, "Exception occurred when getting geocoded country from location");
}
return country;
}
}
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