| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| 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 (intent == null) { |
| Log.d(TAG, "onHandleIntent: could not handle null intent"); |
| return; |
| } |
| if (ACTION_UPDATE_COUNTRY.equals(intent.getAction())) { |
| final 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 { |
| double latitude = location.getLatitude(); |
| // Latitude has to be between 90 and -90 (latitude of north and south poles wrt equator) |
| if (latitude <= 90 && latitude >= -90) { |
| final List<Address> addresses = |
| geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1); |
| if (addresses != null && addresses.size() > 0) { |
| country = addresses.get(0).getCountryCode(); |
| } |
| } else { |
| Log.w(TAG, "Invalid latitude"); |
| } |
| } catch (IOException e) { |
| Log.w(TAG, "Exception occurred when getting geocoded country from location"); |
| } |
| return country; |
| } |
| } |