| /* |
| * Copyright (C) 2017 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.dialer.assisteddialing; |
| |
| import android.annotation.TargetApi; |
| import android.os.Build.VERSION_CODES; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.Nullable; |
| import android.telephony.TelephonyManager; |
| import android.text.TextUtils; |
| import com.android.dialer.common.LogUtil; |
| import java.util.Locale; |
| import java.util.Optional; |
| |
| // TODO(erfanian): Improve definition of roaming and home country in finalized API. |
| /** |
| * LocationDetector is responsible for determining the Roaming location of the User, in addition to |
| * User's home country. |
| */ |
| final class LocationDetector { |
| |
| private final TelephonyManager telephonyManager; |
| private final String userProvidedHomeCountry; |
| |
| public LocationDetector( |
| @NonNull TelephonyManager telephonyManager, @Nullable String userProvidedHomeCountry) { |
| if (telephonyManager == null) { |
| throw new NullPointerException("Provided TelephonyManager was null"); |
| } |
| |
| this.telephonyManager = telephonyManager; |
| this.userProvidedHomeCountry = userProvidedHomeCountry; |
| } |
| |
| // TODO(erfanian): confirm this is based on ISO 3166-1 alpha-2. libphonenumber expects Unicode's |
| // CLDR |
| // TODO(erfanian): confirm these are still valid in a multi-sim environment. |
| /** |
| * Returns what we believe to be the User's home country. This should resolve to |
| * PROPERTY_ICC_OPERATOR_ISO_COUNTRY |
| */ |
| @SuppressWarnings("AndroidApiChecker") // Use of optional |
| @TargetApi(VERSION_CODES.N) |
| public Optional<String> getUpperCaseUserHomeCountry() { |
| |
| if (!TextUtils.isEmpty(userProvidedHomeCountry)) { |
| LogUtil.i( |
| "LocationDetector.getUpperCaseUserRoamingCountry", "user provided home country code"); |
| return Optional.of(userProvidedHomeCountry.toUpperCase(Locale.US)); |
| } |
| |
| String simCountryIso = telephonyManager.getSimCountryIso(); |
| if (simCountryIso != null) { |
| LogUtil.i("LocationDetector.getUpperCaseUserRoamingCountry", "using sim country iso"); |
| return Optional.of(telephonyManager.getSimCountryIso().toUpperCase(Locale.US)); |
| } |
| LogUtil.i("LocationDetector.getUpperCaseUserHomeCountry", "user home country was null"); |
| return Optional.empty(); |
| } |
| |
| /** Returns what we believe to be the User's current (roaming) country */ |
| @SuppressWarnings("AndroidApiChecker") // Use of optional |
| @TargetApi(VERSION_CODES.N) |
| public Optional<String> getUpperCaseUserRoamingCountry() { |
| // TODO Increase coverage of location resolution?? |
| String networkCountryIso = telephonyManager.getNetworkCountryIso(); |
| if (networkCountryIso != null) { |
| return Optional.of(telephonyManager.getNetworkCountryIso().toUpperCase(Locale.US)); |
| } |
| LogUtil.i("LocationDetector.getUpperCaseUserRoamingCountry", "user roaming country was null"); |
| return Optional.empty(); |
| } |
| } |