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Diffstat (limited to 'java/com/android/contacts/common/location/CountryDetector.java')
-rw-r--r-- | java/com/android/contacts/common/location/CountryDetector.java | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/java/com/android/contacts/common/location/CountryDetector.java b/java/com/android/contacts/common/location/CountryDetector.java deleted file mode 100644 index 7d9e42b38..000000000 --- a/java/com/android/contacts/common/location/CountryDetector.java +++ /dev/null @@ -1,221 +0,0 @@ -/* - * 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.PendingIntent; -import android.content.BroadcastReceiver; -import android.content.Context; -import android.content.Intent; -import android.content.SharedPreferences; -import android.location.Geocoder; -import android.location.Location; -import android.location.LocationManager; -import android.preference.PreferenceManager; -import android.telephony.TelephonyManager; -import android.text.TextUtils; -import android.util.Log; -import com.android.dialer.util.PermissionsUtil; -import java.util.Locale; - -/** - * This class is used to detect the country where the user is. It is a simplified version of the - * country detector service in the framework. The sources of country location are queried in the - * following order of reliability: - * - * <ul> - * <li>Mobile network - * <li>Location manager - * <li>SIM's country - * <li>User's default locale - * </ul> - * - * As far as possible this class tries to replicate the behavior of the system's country detector - * service: 1) Order in priority of sources of country location 2) Mobile network information - * provided by CDMA phones is ignored 3) Location information is updated every 12 hours (instead of - * 24 hours in the system) 4) Location updates only uses the {@link - * LocationManager#PASSIVE_PROVIDER} to avoid active use of the GPS 5) If a location is successfully - * obtained and geocoded, we never fall back to use of the SIM's country (for the system, the - * fallback never happens without a reboot) 6) Location is not used if the device does not implement - * a {@link android.location.Geocoder} - */ -public class CountryDetector { - - public static final String KEY_PREFERENCE_TIME_UPDATED = "preference_time_updated"; - public static final String KEY_PREFERENCE_CURRENT_COUNTRY = "preference_current_country"; - private static final String TAG = "CountryDetector"; - // Wait 12 hours between updates - private static final long TIME_BETWEEN_UPDATES_MS = 1000L * 60 * 60 * 12; - // Minimum distance before an update is triggered, in meters. We don't need this to be too - // exact because all we care about is what country the user is in. - private static final long DISTANCE_BETWEEN_UPDATES_METERS = 5000; - private static CountryDetector sInstance; - private final TelephonyManager mTelephonyManager; - private final LocationManager mLocationManager; - private final LocaleProvider mLocaleProvider; - // Used as a default country code when all the sources of country data have failed in the - // exceedingly rare event that the device does not have a default locale set for some reason. - private static final String DEFAULT_COUNTRY_ISO = "US"; - private final Context mContext; - - private CountryDetector(Context context) { - this( - context, - (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE), - (LocationManager) context.getSystemService(Context.LOCATION_SERVICE), - new LocaleProvider()); - } - - private CountryDetector( - Context context, - TelephonyManager telephonyManager, - LocationManager locationManager, - LocaleProvider localeProvider) { - mTelephonyManager = telephonyManager; - mLocationManager = locationManager; - mLocaleProvider = localeProvider; - mContext = context; - - registerForLocationUpdates(context, mLocationManager); - } - - public static void registerForLocationUpdates(Context context, LocationManager locationManager) { - if (!PermissionsUtil.hasLocationPermissions(context)) { - Log.w(TAG, "No location permissions, not registering for location updates."); - return; - } - - if (!Geocoder.isPresent()) { - // Certain devices do not have an implementation of a geocoder - in that case there is - // no point trying to get location updates because we cannot retrieve the country based - // on the location anyway. - return; - } - final Intent activeIntent = new Intent(context, LocationChangedReceiver.class); - final PendingIntent pendingIntent = - PendingIntent.getBroadcast(context, 0, activeIntent, PendingIntent.FLAG_UPDATE_CURRENT); - - locationManager.requestLocationUpdates( - LocationManager.PASSIVE_PROVIDER, - TIME_BETWEEN_UPDATES_MS, - DISTANCE_BETWEEN_UPDATES_METERS, - pendingIntent); - } - - /** - * Returns the instance of the country detector. {@link #initialize(Context)} must have been - * called previously. - * - * @return the initialized country detector. - */ - public static synchronized CountryDetector getInstance(Context context) { - if (sInstance == null) { - sInstance = new CountryDetector(context.getApplicationContext()); - } - return sInstance; - } - - /** Factory method for {@link CountryDetector} that allows the caller to provide mock objects. */ - public CountryDetector getInstanceForTest( - Context context, - TelephonyManager telephonyManager, - LocationManager locationManager, - LocaleProvider localeProvider, - Geocoder geocoder) { - return new CountryDetector(context, telephonyManager, locationManager, localeProvider); - } - - public String getCurrentCountryIso() { - String result = null; - if (isNetworkCountryCodeAvailable()) { - result = getNetworkBasedCountryIso(); - } - if (TextUtils.isEmpty(result)) { - result = getLocationBasedCountryIso(); - } - if (TextUtils.isEmpty(result)) { - result = getSimBasedCountryIso(); - } - if (TextUtils.isEmpty(result)) { - result = getLocaleBasedCountryIso(); - } - if (TextUtils.isEmpty(result)) { - result = DEFAULT_COUNTRY_ISO; - } - return result.toUpperCase(Locale.US); - } - - /** @return the country code of the current telephony network the user is connected to. */ - private String getNetworkBasedCountryIso() { - return mTelephonyManager.getNetworkCountryIso(); - } - - /** @return the geocoded country code detected by the {@link LocationManager}. */ - private String getLocationBasedCountryIso() { - if (!Geocoder.isPresent() || !PermissionsUtil.hasLocationPermissions(mContext)) { - return null; - } - final SharedPreferences sharedPreferences = - PreferenceManager.getDefaultSharedPreferences(mContext); - return sharedPreferences.getString(KEY_PREFERENCE_CURRENT_COUNTRY, null); - } - - /** @return the country code of the SIM card currently inserted in the device. */ - private String getSimBasedCountryIso() { - return mTelephonyManager.getSimCountryIso(); - } - - /** @return the country code of the user's currently selected locale. */ - private String getLocaleBasedCountryIso() { - Locale defaultLocale = mLocaleProvider.getDefaultLocale(); - if (defaultLocale != null) { - return defaultLocale.getCountry(); - } - return null; - } - - private boolean isNetworkCountryCodeAvailable() { - // On CDMA TelephonyManager.getNetworkCountryIso() just returns the SIM's country code. - // In this case, we want to ignore the value returned and fallback to location instead. - return mTelephonyManager.getPhoneType() == TelephonyManager.PHONE_TYPE_GSM; - } - - /** - * Class that can be used to return the user's default locale. This is in its own class so that it - * can be mocked out. - */ - public static class LocaleProvider { - - public Locale getDefaultLocale() { - return Locale.getDefault(); - } - } - - public static class LocationChangedReceiver extends BroadcastReceiver { - - @Override - public void onReceive(final Context context, Intent intent) { - if (!intent.hasExtra(LocationManager.KEY_LOCATION_CHANGED)) { - return; - } - - final Location location = - (Location) intent.getExtras().get(LocationManager.KEY_LOCATION_CHANGED); - - UpdateCountryService.updateCountry(context, location); - } - } -} |