1 /* 2 * Copyright (C) 2015 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.telecom; 18 19 import android.content.Context; 20 import android.net.Uri; 21 import android.support.annotation.NonNull; 22 import android.support.annotation.Nullable; 23 import android.support.annotation.WorkerThread; 24 import android.telecom.Call; 25 import android.telecom.PhoneAccountHandle; 26 import android.telephony.PhoneNumberUtils; 27 import android.telephony.SubscriptionInfo; 28 import android.text.TextUtils; 29 import com.android.dialer.common.Assert; 30 import com.android.dialer.common.LogUtil; 31 import com.google.common.base.Optional; 32 import java.util.Locale; 33 34 /** 35 * Class to provide a standard interface for obtaining information from the underlying 36 * android.telecom.Call. Much of this should be obtained through the incall.Call, but on occasion we 37 * need to interact with the telecom.Call directly (eg. call blocking, before the incall.Call has 38 * been created). 39 */ 40 public class TelecomCallUtil { 41 42 /** Returns Whether the call handle is an emergency number. */ isEmergencyCall(@onNull Call call)43 public static boolean isEmergencyCall(@NonNull Call call) { 44 Assert.isNotNull(call); 45 Uri handle = call.getDetails().getHandle(); 46 return PhoneNumberUtils.isEmergencyNumber(handle == null ? "" : handle.getSchemeSpecificPart()); 47 } 48 49 /** 50 * Returns The phone number which the {@code Call} is currently connected, or {@code null} if the 51 * number is not available. 52 */ 53 @Nullable getNumber(@ullable Call call)54 public static String getNumber(@Nullable Call call) { 55 if (call == null) { 56 return null; 57 } 58 if (call.getDetails().getGatewayInfo() != null) { 59 return call.getDetails().getGatewayInfo().getOriginalAddress().getSchemeSpecificPart(); 60 } 61 Uri handle = getHandle(call); 62 return handle == null ? null : handle.getSchemeSpecificPart(); 63 } 64 65 /** 66 * Returns The handle (e.g., phone number) to which the {@code Call} is currently connected, or 67 * {@code null} if the number is not available. 68 */ 69 @Nullable getHandle(@ullable Call call)70 public static Uri getHandle(@Nullable Call call) { 71 return call == null ? null : call.getDetails().getHandle(); 72 } 73 74 /** 75 * Normalizes the number of the {@code call} to E.164. The country of the SIM associated with the 76 * call is used to determine the country. 77 * 78 * <p>If the number cannot be formatted (because for example the country cannot be determined), 79 * returns the number with non-dialable digits removed. 80 */ 81 @WorkerThread getNormalizedNumber(Context appContext, Call call)82 public static Optional<String> getNormalizedNumber(Context appContext, Call call) { 83 Assert.isWorkerThread(); 84 85 Optional<String> validE164 = getValidE164Number(appContext, call); 86 if (validE164.isPresent()) { 87 return validE164; 88 } 89 String rawNumber = getNumber(call); 90 if (TextUtils.isEmpty(rawNumber)) { 91 return Optional.absent(); 92 } 93 return Optional.of(PhoneNumberUtils.normalizeNumber(rawNumber)); 94 } 95 96 /** 97 * Formats the number of the {@code call} to E.164 if it is valid. The country of the SIM 98 * associated with the call is used to determine the country. 99 * 100 * <p>If the number cannot be formatted (because for example it is invalid or the country cannot 101 * be determined), returns {@link Optional#absent()}. 102 */ 103 @WorkerThread getValidE164Number(Context appContext, Call call)104 public static Optional<String> getValidE164Number(Context appContext, Call call) { 105 Assert.isWorkerThread(); 106 String rawNumber = getNumber(call); 107 if (TextUtils.isEmpty(rawNumber)) { 108 return Optional.absent(); 109 } 110 Optional<String> countryCode = getCountryCode(appContext, call); 111 if (!countryCode.isPresent()) { 112 LogUtil.w("TelecomCallUtil.getValidE164Number", "couldn't find a country code for call"); 113 return Optional.absent(); 114 } 115 return Optional.fromNullable(PhoneNumberUtils.formatNumberToE164(rawNumber, countryCode.get())); 116 } 117 118 @WorkerThread getCountryCode(Context appContext, Call call)119 public static Optional<String> getCountryCode(Context appContext, Call call) { 120 Assert.isWorkerThread(); 121 PhoneAccountHandle phoneAccountHandle = call.getDetails().getAccountHandle(); 122 Optional<SubscriptionInfo> subscriptionInfo = 123 TelecomUtil.getSubscriptionInfo(appContext, phoneAccountHandle); 124 if (subscriptionInfo.isPresent() && subscriptionInfo.get().getCountryIso() != null) { 125 return Optional.of(subscriptionInfo.get().getCountryIso().toUpperCase(Locale.US)); 126 } 127 return Optional.absent(); 128 } 129 } 130