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Commit c127211f authored by Yorke Lee's avatar Yorke Lee
Browse files

Always return at least the default emergency phone account 

If Telephony hasn't registered any phone accounts yet, return a
default emergency phone account so that emergency calls can still be
made.

Bug: 18003823

Change-Id: I090abb170c9c7d718afd370a1d8c620decf4dbc3
parent 127faa82

src/com/android/server/telecom/CreateConnectionProcessor.java

+12 −0
Original line number Diff line number Diff line
@@ -238,6 +238,18 @@ final class CreateConnectionProcessor { 
            Log.i(this, "Emergency number detected");

            mAttemptRecords.clear();

            List<PhoneAccount> allAccounts = mPhoneAccountRegistrar.getAllPhoneAccounts();



            if (allAccounts.isEmpty()) {

                // If the list of phone accounts is empty at this point, it means Telephony hasn't

                // registered any phone accounts yet. Add a fallback emergency phone account so

                // that emergency calls can still go through. We create a new ArrayLists here just

                // in case the implementation of PhoneAccountRegistrar ever returns an unmodifiable

                // list.

                allAccounts = new ArrayList<PhoneAccount>();

                allAccounts.add(TelephonyUtil.getDefaultEmergencyPhoneAccount());

            }





            // First, add SIM phone accounts which can place emergency calls.

            for (PhoneAccount phoneAccount : allAccounts) {

                if (phoneAccount.hasCapabilities(PhoneAccount.CAPABILITY_PLACE_EMERGENCY_CALLS) &&

src/com/android/server/telecom/TelephonyUtil.java

+19 −0
Original line number Diff line number Diff line
@@ -19,6 +19,8 @@ package com.android.server.telecom; 
import android.content.ComponentName;

import android.content.Context;

import android.net.Uri;

import android.telecom.PhoneAccount;

import android.telecom.PhoneAccountHandle;

import android.telephony.PhoneNumberUtils;



/**
@@ -33,8 +35,25 @@ public final class TelephonyUtil { 
    private static final String PSTN_CALL_SERVICE_CLASS_NAME =

            "com.android.services.telephony.TelephonyConnectionService";



    private static final PhoneAccountHandle DEFAULT_EMERGENCY_PHONE_ACCOUNT_HANDLE =

            new PhoneAccountHandle(

                    new ComponentName(TELEPHONY_PACKAGE_NAME, PSTN_CALL_SERVICE_CLASS_NAME), "E");



    private TelephonyUtil() {}



    /**

     * @return fallback {@link PhoneAccount} to be used by Telecom for emergency calls in the

     * rare case that Telephony has not registered any phone accounts yet. Details about this

     * account are not expected to be displayed in the UI, so the description, etc are not

     * populated.

     */

    static PhoneAccount getDefaultEmergencyPhoneAccount() {

        return PhoneAccount.builder(DEFAULT_EMERGENCY_PHONE_ACCOUNT_HANDLE, "E")

                .setCapabilities(PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION |

                        PhoneAccount.CAPABILITY_CALL_PROVIDER |

                        PhoneAccount.CAPABILITY_PLACE_EMERGENCY_CALLS).build();

    }



    static boolean isPstnComponentName(ComponentName componentName) {

        final ComponentName pstnComponentName = new ComponentName(

                TELEPHONY_PACKAGE_NAME, PSTN_CALL_SERVICE_CLASS_NAME);