1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.dialer.assisteddialing; 18 19 import android.support.annotation.NonNull; 20 import android.support.annotation.Nullable; 21 import android.telephony.TelephonyManager; 22 import android.text.TextUtils; 23 import com.android.dialer.common.LogUtil; 24 import java.util.Locale; 25 import java.util.Optional; 26 27 // TODO(erfanian): Improve definition of roaming and home country in finalized API. 28 /** 29 * LocationDetector is responsible for determining the Roaming location of the User, in addition to 30 * User's home country. 31 */ 32 final class LocationDetector { 33 34 private final TelephonyManager telephonyManager; 35 private final String userProvidedHomeCountry; 36 LocationDetector( @onNull TelephonyManager telephonyManager, @Nullable String userProvidedHomeCountry)37 LocationDetector( 38 @NonNull TelephonyManager telephonyManager, @Nullable String userProvidedHomeCountry) { 39 if (telephonyManager == null) { 40 throw new NullPointerException("Provided TelephonyManager was null"); 41 } 42 43 this.telephonyManager = telephonyManager; 44 this.userProvidedHomeCountry = userProvidedHomeCountry; 45 } 46 47 // TODO(erfanian): confirm this is based on ISO 3166-1 alpha-2. libphonenumber expects Unicode's 48 // CLDR 49 // TODO(erfanian): confirm these are still valid in a multi-sim environment. 50 /** 51 * Returns what we believe to be the User's home country. This should resolve to 52 * PROPERTY_ICC_OPERATOR_ISO_COUNTRY 53 */ getUpperCaseUserHomeCountry()54 Optional<String> getUpperCaseUserHomeCountry() { 55 56 if (!TextUtils.isEmpty(userProvidedHomeCountry)) { 57 LogUtil.i( 58 "LocationDetector.getUpperCaseUserRoamingCountry", "user provided home country code"); 59 return Optional.of(userProvidedHomeCountry.toUpperCase(Locale.US)); 60 } 61 62 String simCountryIso = telephonyManager.getSimCountryIso(); 63 if (simCountryIso != null) { 64 LogUtil.i("LocationDetector.getUpperCaseUserRoamingCountry", "using sim country iso"); 65 return Optional.of(telephonyManager.getSimCountryIso().toUpperCase(Locale.US)); 66 } 67 LogUtil.i("LocationDetector.getUpperCaseUserHomeCountry", "user home country was null"); 68 return Optional.empty(); 69 } 70 71 /** Returns what we believe to be the User's current (roaming) country */ getUpperCaseUserRoamingCountry()72 Optional<String> getUpperCaseUserRoamingCountry() { 73 // TODO Increase coverage of location resolution?? 74 String networkCountryIso = telephonyManager.getNetworkCountryIso(); 75 if (networkCountryIso != null) { 76 return Optional.of(telephonyManager.getNetworkCountryIso().toUpperCase(Locale.US)); 77 } 78 LogUtil.i("LocationDetector.getUpperCaseUserRoamingCountry", "user roaming country was null"); 79 return Optional.empty(); 80 } 81 } 82