1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License 15 */ 16 17 package com.android.providers.contacts; 18 19 import android.content.Context; 20 import android.location.Country; 21 import android.location.CountryDetector; 22 import android.location.CountryListener; 23 import android.os.Looper; 24 25 import java.util.Locale; 26 27 /** 28 * This class monitors the change of country. 29 * <p> 30 * {@link #getCountryIso()} is used to get the ISO 3166-1 two letters country 31 * code of current country. 32 */ 33 public class CountryMonitor { 34 private String mCurrentCountryIso; 35 private Context mContext; 36 37 public CountryMonitor(Context context) { 38 mContext = context; 39 } 40 41 /** 42 * Get the current country code 43 * 44 * @return the ISO 3166-1 two letters country code of current country. 45 */ 46 public synchronized String getCountryIso() { 47 if (mCurrentCountryIso == null) { 48 final CountryDetector countryDetector = 49 (CountryDetector) mContext.getSystemService(Context.COUNTRY_DETECTOR); 50 Country country = null; 51 if (countryDetector != null) country = countryDetector.detectCountry(); 52 53 if (country == null) { 54 // Fallback to Locale if there are issues with CountryDetector 55 return Locale.getDefault().getCountry(); 56 } 57 58 mCurrentCountryIso = country.getCountryIso(); 59 countryDetector.addCountryListener(new CountryListener() { 60 public void onCountryDetected(Country country) { 61 mCurrentCountryIso = country.getCountryIso(); 62 } 63 }, Looper.getMainLooper()); 64 } 65 return mCurrentCountryIso; 66 } 67 } 68
