android N 拨打电话流程(MO)

本流程图基于MTK平台 Android 7.0,拨打的普通电话,本流程只作为沟通学习使用

整体流程图

android N 拨打电话流程(MO)_第1张图片

android N 拨打电话流程(MO)_第2张图片

流程中部分重点知识

packages-apps目录

  • dialer应用的DialpadFragment.onClick中,通过用户输入号码并点击拨号按钮(R.id.dialpad_floating_action_button)发起MO
  • 在handleDialButtonPressed方法里面会判断输入框中是否含有号码,然后通过IntentUtil构造一个intent,并通过startActivityWithErrorToast启动intent,这里会判断 mProhibitedPhoneNumberRegexp = getResources().getString(R.string.config_prohibited_phone_number_regexp);`是否含有默认拒绝拨打的号码,如果含有弹出含有“Can\’t call this number”字符串的DialogFragment提示用户。
  • 在startActivityWithErrorToast中,会获取当前触摸屏幕的位置信息,并存入intent中,后续启动incallUI的时候可能会使用Point touchPoint = TouchPointManager.getInstance().getPoint();
    if (touchPoint.x != 0 || touchPoint.y != 0) {
    Bundle extras;
    // Make sure to not accidentally clobber any existing extras
    if (intent.hasExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS)) {
    extras = intent.getParcelableExtra(
    TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS);
    } else {
    extras = new Bundle();
    }
    extras.putParcelable(TouchPointManager.TOUCH_POINT, touchPoint);
    intent.putExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS, extras);
    }
  • 在TelecomUtil的这个方法中判断是否有权限拨打号码,包括判断是否是默认的dialer,和是否有”android.permission.CALL_PHONE”;这个权限public static boolean hasCallPhonePermission(Context context) {
    return isDefaultDialer(context)
    || hasPermission(context, Manifest.permission.CALL_PHONE);
    }

packages-services-Telecomm目录

TelecomServiceImpl.placeCall

  • 这里会做一些检查,比如:权限检查和包检查,即使call 的权限是关闭的也会走这里,因为一些特殊的通话,比如:紧急通话,在后面的UserCallIntentProcessor中会把不是紧急号码切权限是关闭的通话给结束。
                final boolean hasCallAppOp = mAppOpsManager.noteOp(AppOpsManager.OP_CALL_PHONE,
                        Binder.getCallingUid(), callingPackage) == AppOpsManager.MODE_ALLOWED;

                final boolean hasCallPermission = mContext.checkCallingPermission(CALL_PHONE) ==
                        PackageManager.PERMISSION_GRANTED;

UserCallIntentProcessor

processIntent

    public void processIntent(Intent intent, String callingPackageName,
            boolean canCallNonEmergency) {
        // Ensure call intents are not processed on devices that are not capable of calling.
        if (!isVoiceCapable()) {//通过com.android.internal.R.bool.config_voice_capable判断是否支持通话,比如:流量卡就不支持通话,并不会启动incallUI
            return;
        }

        String action = intent.getAction();

        if (Intent.ACTION_CALL.equals(action) ||
                Intent.ACTION_CALL_PRIVILEGED.equals(action) ||
                Intent.ACTION_CALL_EMERGENCY.equals(action)) {
            processOutgoingCallIntent(intent, callingPackageName, canCallNonEmergency);
        }
    }
    public static final String ACTION_DIAL = "android.intent.action.DIAL";//普通电话进入dialer界面的拨号盘
    public static final String ACTION_CALL = "android.intent.action.CALL";//只能拨打普通电话不能拨打紧急号码,M即以上必须有android.Manifest.permission#CALL_PHONE权限
    public static final String ACTION_CALL_EMERGENCY = "android.intent.action.CALL_EMERGENCY"; //只能拨打紧急号码的action
    public static final String ACTION_CALL_PRIVILEGED = "android.intent.action.CALL_PRIVILEGED";//可以拨打任意类型电话的action

processOutgoingCallIntent

  • 判断是正常的通话类型是否是SIP phone
        if (!PhoneAccount.SCHEME_VOICEMAIL.equals(scheme)) {
            handle = Uri.fromParts(PhoneNumberUtils.isUriNumber(uriString) ?
                    PhoneAccount.SCHEME_SIP : PhoneAccount.SCHEME_TEL, uriString, null);//构造intent的data
        }
    public static boolean isUriNumber(String number) {
        // Note we allow either "@" or "%40" to indicate a URI, in case
        // the passed-in string is URI-escaped.  (Neither "@" nor "%40"
        // will ever be found in a legal PSTN number.)
        return number != null && (number.contains("@") || number.contains("%40"));
    }
  • 判断是否有DISALLOW_OUTGOING_CALLS的限制,如果拨打的是emergency call则忽略这个限制,如果拨打的正常号码且具有这个限制,或者权限没有通过,不允许打正常的电话,则弹出错误的对话框 like:“Only emergency calls are allowed.”or “This application cannot make outgoing calls without the Phone permission.”
  • 如果是video_call并且打的是emergency_call则需要将video的状态改成voice来打emergency_call
 intent.putExtra(CallIntentProcessor.KEY_IS_PRIVILEGED_DIALER,
                isDefaultOrSystemDialer(callingPackageName));//判断是否是默认或者系统的dialer应用,如果是才可以打emergency_call

PrimaryCallReceiver

    public void onReceive(Context context, Intent intent) {
        Log.startSession("PCR.oR");
        synchronized (getTelecomSystem().getLock()) {
            if (!ExtensionManager.getCallMgrExt()
                    .shouldPreventVideoCallIfLowBattery(context, intent)) {//如果是video_call的话,判断当前的电量是否处于低电模式,现在默认是返回false,后续会根据不同项目要求做定制
                getTelecomSystem().getCallIntentProcessor().processIntent(intent);
            }
        }
        Log.endSession();
    }

CallIntentProcessor

processOutgoingCallIntent

  • 这个方法里面主要还是重新拿出intent里面的数据,并判断当前是否是主要的dialer,是否sip_phone,是否有phone账户,是否是video状态,用哪一张卡打,是否是IMS通话请求,是否是会议通话请求,根据这些判断再重新构造intent的Extras,然后通过前面得到的状态创建一个call,如果是conference的话直接创建链接,如果不是则继续往下执行
        if (intent.hasExtra(TelecomUtils.EXTRA_SLOT)) {
            int slotId = intent.getIntExtra(TelecomUtils.EXTRA_SLOT, -1);
            phoneAccountHandle = TelecomUtils
                    .getPhoneAccountHandleWithSlotId(context, slotId, phoneAccountHandle);//如果有多张卡的话会拿到重那张卡拨打号码
        }
        // Send to CallsManager to ensure the InCallUI gets kicked off before the broadcast returns
        Call call = callsManager
                .startOutgoingCall(handle, phoneAccountHandle, clientExtras, initiatingUser);//通过这里来启动incallUI

NewOutgoingCallIntentBroadcaster

processIntent

  • 先判断是否是VoicemailNumber,然后再得到格式化号码包括大小写转换成数字,分隔符的分离,判断是否是潜在的紧急号码,再将action为ACTION_CALL_PRIVILEGED类型的通话变成ACTION_CALL_EMERGENCY或者ACTION_CALL,
    * - CALL (intent launched by all third party dialers)
    * - CALL_PRIVILEGED (intent launched by system apps e.g. system Dialer, voice Dialer)
    * - CALL_EMERGENCY (intent launched by lock screen emergency dialer) 如果是拨打紧急号码的话会直接调用placeOutgoingCall,否则会执行后面的流程发送广播。
        boolean isUriNumber = mPhoneNumberUtilsAdapter.isUriNumber(number);//判断通话类型,是否是sip_phone
        if (!isUriNumber) {
            number = mPhoneNumberUtilsAdapter.convertKeypadLettersToDigits(number);//将号码字符串的字母转换成数字
            number = mPhoneNumberUtilsAdapter.stripSeparators(number);//将号码中的分割符分离
        }

        final boolean isPotentialEmergencyNumber = isPotentialEmergencyNumber(number);//判断是否是潜在的紧急号码
        Log.v(this, "isPotentialEmergencyNumber = %s", isPotentialEmergencyNumber);

        rewriteCallIntentAction(intent, isPotentialEmergencyNumber);//将ACTION_CALL_PRIVILEGED变成ACTION_CALL_EMERGENCY或者ACTION_CALL

CallsManager

placeOutgoingCall

  • 这里主要是对CDMA模式的call的广播,然后就是根据一些状态判断speaker的开关,是否是紧急号码的判断,然后就是开始创建链接

CreateConnectionProcessor

attemptNextPhoneAccount

        if (mCallResponse != null && attempt != null) {
            Log.i(this, "Trying attempt %s", attempt);
            PhoneAccountHandle phoneAccount = attempt.connectionManagerPhoneAccount;
            mService = mRepository.getService(phoneAccount.getComponentName(),
                    phoneAccount.getUserHandle());//得到创建链接的service
            if (mService == null) {
                Log.i(this, "Found no connection service for attempt %s", attempt);
                attemptNextPhoneAccount();
            } else {
                mCall.setConnectionManagerPhoneAccount(attempt.connectionManagerPhoneAccount);//设置phoneaccount的ConnectionManager
                mCall.setTargetPhoneAccount(attempt.targetPhoneAccount);
                mCall.setConnectionService(mService);//设置service
                setTimeoutIfNeeded(mService, attempt);

                mService.createConnection(mCall, this);//创建链接
            }
        } 

ConnectionServiceWrapper

createConnection

  • 通过binder创建链接,如果创建成功,先会判断callid是否为null以应对某些特定情况下链接创建成功前呼叫就已经断开了,这种情况下会打印错误log和DisconnectCause.ERROR的response返回,然后继续往下执行创建链接。
try {
                    /// M: For VoLTE @{
                    boolean isConferenceDial = call.isConferenceDial();
                    if (isConferenceDial) {
                        logOutgoing("createConference(%s) via %s.", call, getComponentName());
                        mServiceInterface.createConference(//会议链接
                                call.getConnectionManagerPhoneAccount(),
                                callId,
                                new ConnectionRequest(
                                        call.getTargetPhoneAccount(),
                                        call.getHandle(),
                                        extras,
                                        call.getVideoState(),
                                        callId),
                                call.getConferenceParticipants(),
                                call.isIncoming());
                    } else {
                        mServiceInterface.createConnection(//普通链接
                                call.getConnectionManagerPhoneAccount(),
                                callId,
                                new ConnectionRequest(
                                        call.getTargetPhoneAccount(),
                                        call.getHandle(),
                                        extras,
                                        call.getVideoState(),
                                        callId),
                                call.shouldAttachToExistingConnection(),
                                call.isUnknown());
                    }
                    /// @}
                } catch (RemoteException e) {
                    Log.e(this, e, "Failure to createConnection -- %s", getComponentName());
                    mPendingResponses.remove(callId).handleCreateConnectionFailure(
                            new DisconnectCause(DisconnectCause.ERROR, e.toString()));
                }

packages-services-Telephony目录

TelephonyConnectionService

onCreateOutgoingConnection

这里会做一系列的判断:

  • 拨打号码是否为null,拨打电话的账户是否存在
  • 判断是否是ECC重连(紧急号码相关),如果是将voiceemail的通话类型转换成tel,否则判断当前号码是否和*228正则表达式匹配,如果匹配就拒绝此次链接,因为这些特殊的数字用于OTASP,如果不禁用可能将LTE锁定到3G网络下。
  • 判断phone是否为null,如果为null并且config_checkSimStateBeforeOutgoingCall值为true就会去检查当前SIM卡的状态,并确定是否弹出PIN码的输入框
  • 判断飞行模式是否打开
  • 判断如果是拨打紧急号码且当前处于4G only数据链接状态,者取消这次链接
  • 判断当前网络是否注册成功
  • 判断当前是否是紧急号码并处于isInEcm模式,如果拨打的不是紧急号码,但是当前处于ECM模式,则KEY_ALLOW_NON_EMERGENCY_CALLS_IN_ECM_BOOL这个bool值觉得是否结束当前链接(ECM模式是指紧急呼叫回拨模式,一般GSM网络不支持,CDMA网络支持)
  • 对service状态的判断,处理不部分异常信息
  • 如果是videocall则判断TTY是否开启,如果开启则断开链接(TTY聋哑人专用模式)
  • 链接的初始化,number,video状态这些的配置
    // If configured, reject attempts to dial numbers matching this pattern.
    private static final Pattern CDMA_ACTIVATION_CODE_REGEX_PATTERN =
            Pattern.compile("\\*228[0-9]{0,2}");

        /// M: For ECC change feature @{
        if (isEmergencyNumber) {
            if (mSwitchPhoneHelper == null) {
                mSwitchPhoneHelper = new SwitchPhoneHelper(this, number);
            }
            if (mSwitchPhoneHelper.needToPrepareForDial()) {
                mSwitchPhoneHelper.prepareForDial(
                        new SwitchPhoneHelper.Callback() {
                            @Override
                            public void onComplete(boolean success) {
                                if (connection.getState() == Connection.STATE_DISCONNECTED) {
                                    Log.d(this, "prepareForDial, connection disconnect");
                                } else if (success) {
                                    Log.d(this, "startTurnOnRadio");
                                    startTurnOnRadio(connection, request, number);
                                } else {
                                    /// M: CC: ECC Retry @{
                                    // Assume only one ECC exists
                                    // Not trigger retry since Modem fails to
                                    // power on should be a bug
                                    if (TelephonyConnectionServiceUtil.getInstance()
                                            .isEccRetryOn()) {
                                        Log.d(this, "ECC Retry : clear ECC param");
                                        TelephonyConnectionServiceUtil.getInstance()
                                                .clearEccRetryParams();
                                    }
                                    /// @}
                                    Log.d(this, "prepareForDial, failed to turn on radio");
                                    connection.setDisconnected(
                                            DisconnectCauseUtil.toTelecomDisconnectCause(
                                            android.telephony.DisconnectCause.POWER_OFF,
                                            "Failed to turn on radio."));
                                    connection.destroy();
                                }
                            }
                        });
        /// @}
            } else {
                /// M: CC: ECC Retry @{
                if (!TelephonyConnectionServiceUtil.getInstance().isEccRetryOn()) {
                    Log.d(this, "ECC Retry : set param with Intial ECC.");
                    TelephonyConnectionServiceUtil.getInstance().setEccRetryParams(
                            request,
                            phone.getPhoneId());
                }
                /// @}
                if (useEmergencyCallHelper) {
                    if (mEmergencyCallHelper == null) {
                        mEmergencyCallHelper = new EmergencyCallHelper(this);
                    }
                    final Phone eccPhone = phone;
                    mEmergencyCallHelper.startTurnOnRadioSequence(eccPhone,
                            new EmergencyCallHelper.Callback() {
                                @Override
                                public void onComplete(boolean isRadioReady) {
                                    if (connection.getState() == Connection.STATE_DISCONNECTED) {
                                        Log.d(this, "onCreateOutgoingConnection,"
                                                + " connection disconnected");
                                        // If the connection has already been disconnected,
                                        // do nothing.
                                    } else if (isRadioReady) {
                                        ///M: 4G data only @{
                                        if (TelephonyConnectionServiceUtil.getInstance()
                                                .isDataOnlyMode(eccPhone)) {
                                            Log.d(this, "startTurnOnRadioSequence, 4G data only");
                                            /// M: CC: ECC Retry @{
                                            // Assume only one ECC exists
                                            if (TelephonyConnectionServiceUtil.getInstance()
                                                    .isEccRetryOn()) {
                                                Log.d(this, "ECC Retry : clear ECC param");
                                                TelephonyConnectionServiceUtil.getInstance()
                                                        .clearEccRetryParams();
                                            }
                                            /// @}
                                            connection.setDisconnected(
                                                    DisconnectCauseUtil.toTelecomDisconnectCause(
                                                    android.telephony.DisconnectCause
                                                            .OUTGOING_CANCELED, null));
                                            connection.destroy();
                                            return;
                                        }
                                        /// @}
                                        connection.setInitialized();
                                        placeOutgoingConnection(connection, eccPhone, request);
                                    } else {
                                        /// M: CC: ECC Retry @{
                                        // Assume only one ECC exists
                                        // Not trigger retry since Modem fails to
                                        // power on should be a bug
                                        if (TelephonyConnectionServiceUtil.getInstance()
                                                .isEccRetryOn()) {
                                            Log.d(this, "ECC Retry : clear ECC param");
                                            TelephonyConnectionServiceUtil.getInstance()
                                                    .clearEccRetryParams();
                                        }
                                        /// @}
                                        Log.d(this, "onCreateOutgoingConnection,"
                                                + " failed to turn on radio");
                                        connection.setDisconnected(
                                                DisconnectCauseUtil.toTelecomDisconnectCause(
                                                android.telephony.DisconnectCause.POWER_OFF,
                                                "Failed to turn on radio."));
                                        connection.destroy();
                                    }
                                }
                            });
                } else {
                    placeOutgoingConnection(connection, phone, request);
                }
            }
        } else {
            placeOutgoingConnection(connection, phone, request);
        }

frameworks-opt-telephony目录

dial

  • 这里会判断是否是IMScall,GSMcall,WiFicall,紧急通话,然后通过不同的phone继续下发dial指令
    public Connection dial(String dialString, UUSInfo uusInfo, int videoState, Bundle intentExtras)
            throws CallStateException {
        if (!isPhoneTypeGsm() && uusInfo != null) {
            throw new CallStateException("Sending UUS information NOT supported in CDMA!");
        }

        boolean isEmergency = PhoneNumberUtils.isEmergencyNumber(dialString);
        Phone imsPhone = mImsPhone;

        CarrierConfigManager configManager =
                (CarrierConfigManager) mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE);
        boolean alwaysTryImsForEmergencyCarrierConfig = configManager.getConfigForSubId(getSubId())
                .getBoolean(CarrierConfigManager.KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL);

        boolean imsUseEnabled = isImsUseEnabled()
                 && imsPhone != null
                 && (imsPhone.isVolteEnabled() || imsPhone.isWifiCallingEnabled() ||
                 (imsPhone.isVideoEnabled() && VideoProfile.isVideo(videoState)))
                 && (imsPhone.getServiceState().getState() == ServiceState.STATE_IN_SERVICE);

        boolean useImsForEmergency = imsPhone != null
                && isEmergency
                && alwaysTryImsForEmergencyCarrierConfig
                && ImsManager.isNonTtyOrTtyOnVolteEnabled(mContext)
                && (imsPhone.getServiceState().getState() != ServiceState.STATE_POWER_OFF);

        /// M: @{
        if (!isPhoneTypeGsm()) {
            useImsForEmergency = false;     //TODO: remove this workaround for ECC fail
        }
        /// @}

        String dialPart = PhoneNumberUtils.extractNetworkPortionAlt(PhoneNumberUtils.
                stripSeparators(dialString));
        boolean isUt = (dialPart.startsWith("*") || dialPart.startsWith("#"))
                && dialPart.endsWith("#");

        boolean useImsForUt = imsPhone != null && imsPhone.isUtEnabled();

        if (DBG) {
            logd("imsUseEnabled=" + imsUseEnabled
                    + ", useImsForEmergency=" + useImsForEmergency
                    + ", useImsForUt=" + useImsForUt
                    + ", isUt=" + isUt
                    + ", imsPhone=" + imsPhone
                    + ", imsPhone.isVolteEnabled()="
                    + ((imsPhone != null) ? imsPhone.isVolteEnabled() : "N/A")
                    + ", imsPhone.isVowifiEnabled()="
                    + ((imsPhone != null) ? imsPhone.isWifiCallingEnabled() : "N/A")
                    + ", imsPhone.isVideoEnabled()="
                    + ((imsPhone != null) ? imsPhone.isVideoEnabled() : "N/A")
                    + ", imsPhone.getServiceState().getState()="
                    + ((imsPhone != null) ? imsPhone.getServiceState().getState() : "N/A"));
        }

        Phone.checkWfcWifiOnlyModeBeforeDial(mImsPhone, mContext);

        /// M: should be removed later, just for debug @{
        Rlog.w(LOG_TAG, "IMS: imsphone = " + imsPhone + "isEmergencyNumber = "
                + PhoneNumberUtils.isEmergencyNumber(dialString));
        if (imsPhone != null) {
            Rlog.w(LOG_TAG, "service state = " + imsPhone.getServiceState().getState());
        }
        /// @}

        if ((imsUseEnabled && (!isUt || useImsForUt)) || useImsForEmergency) {
            /// M: CC: Check GSM call state to avoid InCallMMI dispatching to IMS @{
            // [ALPS02516173],[ALPS02615800]
            if (isInCSCall()) {
                if (DBG) Rlog.d(LOG_TAG, "has CS Call. Don't try IMS PS Call!");
            } else {
            /// @}
                try {
                    /// M: ALPS02137073 3G VT Refactory
                    if (videoState == VideoProfile.STATE_AUDIO_ONLY) {
                        if (DBG) Rlog.d(LOG_TAG, "Trying IMS PS call");
                        return imsPhone.dial(dialString, uusInfo, videoState, intentExtras);
                    } else {
                        if (SystemProperties.get("persist.mtk_vilte_support").equals("1")) {
                            if (DBG) {
                                Rlog.d(LOG_TAG, "Trying IMS PS video call");
                            }
                            return imsPhone.dial(dialString, uusInfo, videoState, intentExtras);
                        } else {
                            /// M: CC: For 3G VT only @{
                            if (DBG) {
                                Rlog.d(LOG_TAG, "Trying (non-IMS) CS video call");
                            }
                            return dialInternal(dialString, uusInfo, videoState, intentExtras);
                            /// @}
                        }
                    }
                } catch (CallStateException e) {
                    if (DBG) logd("IMS PS call exception " + e +
                            "imsUseEnabled =" + imsUseEnabled + ", imsPhone =" + imsPhone);
                    if (!Phone.CS_FALLBACK.equals(e.getMessage())) {
                        CallStateException ce = new CallStateException(e.getMessage());
                        ce.setStackTrace(e.getStackTrace());
                        throw ce;
                    }
                }
            /// M: CC: Check GSM call state to avoid InCallMMI dispatching to IMS @{
            }
            /// @}
        }

        /// M: CC: FTA requires call should be dialed out even out of service @{
        if (SystemProperties.getInt("gsm.gcf.testmode", 0) != 2) {
            if (mSST != null && mSST.mSS.getState() == ServiceState.STATE_OUT_OF_SERVICE
                    && mSST.mSS.getDataRegState() != ServiceState.STATE_IN_SERVICE
                    && !isEmergency) {
                throw new CallStateException("cannot dial in current state");
            }
        }
        /// @}
        if (DBG) logd("Trying (non-IMS) CS call");

        if (isPhoneTypeGsm()) {
            /// M: CC: For 3G VT only @{
            //return dialInternal(dialString, null, VideoProfile.STATE_AUDIO_ONLY, intentExtras);
            return dialInternal(dialString, null, videoState, intentExtras);
            /// @}
        } else {
            return dialInternal(dialString, null, videoState, intentExtras);
        }
    }

dialInternal

这里主要是判断是否是MMI code如果是的话就只执行MMIcode的指令,否则继续往下下发拨号动作。

    @Override
    protected Connection dialInternal(String dialString, UUSInfo uusInfo, int videoState,
                                      Bundle intentExtras)
            throws CallStateException {

        // Need to make sure dialString gets parsed properly
        /// M: Ignore stripping for VoLTE SIP uri. @{
        // String newDialString = PhoneNumberUtils.stripSeparators(dialString);
        String newDialString = dialString;
        if (!PhoneNumberUtils.isUriNumber(dialString)) {
            // Need to make sure dialString gets parsed properly
            newDialString = PhoneNumberUtils.stripSeparators(dialString);
        }
        /// @}

        if (isPhoneTypeGsm()) {
            // handle in-call MMI first if applicable
            if (handleInCallMmiCommands(newDialString)) {
                return null;
            }

            // Only look at the Network portion for mmi
            String networkPortion = PhoneNumberUtils.extractNetworkPortionAlt(newDialString);
            GsmMmiCode mmi =
                    GsmMmiCode.newFromDialString(networkPortion, this, mUiccApplication.get());
            if (DBG) logd("dialing w/ mmi '" + mmi + "'...");

            if (mmi == null) {

                /// M: CC: For 3G VT only @{
                //return mCT.dial(newDialString, uusInfo, intentExtras);
                if (videoState == VideoProfile.STATE_AUDIO_ONLY) {
                    return mCT.dial(newDialString, uusInfo, intentExtras);
                } else {
                    if (!is3GVTEnabled()) {
                        throw new CallStateException("cannot vtDial for non-3GVT-capable device");
                    }
                    return mCT.vtDial(newDialString, uusInfo, intentExtras);
                }
                /// @}
            } else if (mmi.isTemporaryModeCLIR()) {
                /// M: CC: For 3G VT only @{
                //return mCT.dial(mmi.mDialingNumber, mmi.getCLIRMode(), uusInfo, intentExtras);
                if (videoState == VideoProfile.STATE_AUDIO_ONLY) {
                    return mCT.dial(mmi.mDialingNumber, mmi.getCLIRMode(), uusInfo, intentExtras);
                } else {
                    if (!is3GVTEnabled()) {
                        throw new CallStateException("cannot vtDial for non-3GVT-capable device");
                    }
                    return mCT.vtDial(mmi.mDialingNumber, mmi.getCLIRMode(), uusInfo, intentExtras);
                }
                /// @}
            } else {
                mPendingMMIs.add(mmi);
                /// M: @{
                Rlog.d(LOG_TAG, "dialInternal: " + dialString + ", mmi=" + mmi);
                dumpPendingMmi();
                /// @}
                mMmiRegistrants.notifyRegistrants(new AsyncResult(null, mmi, null));
                try {
                    mmi.processCode();
                } catch (CallStateException e) {
                    //do nothing
                }

                // FIXME should this return null or something else?
                return null;
            }
        } else {
            return mCT.dial(newDialString);
        }
    }

GsmCdmaCallTracker

dial

  • 清楚所有已断开的链接,并通知call的状态改变
  • 如果当前有一个call处于前台,我们需要将它hold住,并通过一个500毫秒的延时来执行hold这个操作,直到我们收到EVENT_SWITCH_RESULT执行结束的标记,如果不延时在多方会议通话的时候可能出现问题
  • 设置为mute
    public synchronized Connection dial(String dialString, int clirMode, UUSInfo uusInfo,
                                        Bundle intentExtras)
            throws CallStateException {
        // note that this triggers call state changed notif
        clearDisconnected();

        if (!canDial()) {
            throw new CallStateException("cannot dial in current state");
        }

        String origNumber = dialString;
        dialString = convertNumberIfNecessary(mPhone, dialString);

        // The new call must be assigned to the foreground call.
        // That call must be idle, so place anything that's
        // there on hold
        if (mForegroundCall.getState() == GsmCdmaCall.State.ACTIVE) {
            // this will probably be done by the radio anyway
            // but the dial might fail before this happens
            // and we need to make sure the foreground call is clear
            // for the newly dialed connection

            /// M: CC: Proprietary CRSS handling @{
            mWaitingForHoldRequest.set();
            /// @}

            switchWaitingOrHoldingAndActive();
            // This is a hack to delay DIAL so that it is sent out to RIL only after
            // EVENT_SWITCH_RESULT is received. We've seen failures when adding a new call to
            // multi-way conference calls due to DIAL being sent out before SWITCH is processed
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                // do nothing
            }

            // Fake local state so that
            // a) foregroundCall is empty for the newly dialed connection
            // b) hasNonHangupStateChanged remains false in the
            // next poll, so that we don't clear a failed dialing call
            fakeHoldForegroundBeforeDial();
        }

        if (mForegroundCall.getState() != GsmCdmaCall.State.IDLE) {
            //we should have failed in !canDial() above before we get here
            throw new CallStateException("cannot dial in current state");
        }

        mPendingMO = new GsmCdmaConnection(mPhone, checkForTestEmergencyNumber(dialString),
                this, mForegroundCall);
        mHangupPendingMO = false;

        if ( mPendingMO.getAddress() == null || mPendingMO.getAddress().length() == 0
                || mPendingMO.getAddress().indexOf(PhoneNumberUtils.WILD) >= 0) {
            // Phone number is invalid
            mPendingMO.mCause = DisconnectCause.INVALID_NUMBER;

            /// M: CC: Proprietary CRSS handling @{
            mWaitingForHoldRequest.reset();
            /// @}

            // handlePollCalls() will notice this call not present
            // and will mark it as dropped.
            pollCallsWhenSafe();
        } else {
            // Always unmute when initiating a new call
            setMute(false);
            /// M: CC: Proprietary CRSS handling @{
            //mCi.dial(mPendingMO.getAddress(), clirMode, uusInfo, obtainCompleteMessage());
            if (!mWaitingForHoldRequest.isWaiting()) {
                /// M: CC: Proprietary ECC handling@{
                /// M: CC: ECC Retry @{
                if (PhoneNumberUtils.isEmergencyNumber(mPhone.getSubId(), dialString)
                /// @}
                        && !PhoneNumberUtils.isSpecialEmergencyNumber(dialString)) {
                    int serviceCategory = PhoneNumberUtils.getServiceCategoryFromEcc(dialString);
                    mCi.setEccServiceCategory(serviceCategory);
                    mCi.emergencyDial(mPendingMO.getAddress(), clirMode, uusInfo,
                            obtainCompleteMessage(EVENT_DIAL_CALL_RESULT));
                /// @}
                } else {
                    mCi.dial(mPendingMO.getAddress(), clirMode, uusInfo,
                            obtainCompleteMessage(EVENT_DIAL_CALL_RESULT));
                }
            } else {
                mWaitingForHoldRequest.set(mPendingMO.getAddress(), clirMode, uusInfo);
            }
            /// @}

        }

        if (mNumberConverted) {
            mPendingMO.setConverted(origNumber);
            mNumberConverted = false;
        }

        updatePhoneState();
        mPhone.notifyPreciseCallStateChanged();

        return mPendingMO;
    }

Log信息

    Line 10357: 12-19 09:17:32.193 I/Telecom (  988): CallIntentProcessor: onReceive - isUnknownCall: false: PCR.oR@AOY 
    Line 10473: 12-19 09:17:32.288 V/Telecom (  988): CallsManager: startOutgoingCall found accounts = [PhoneAccountHandle{TelephonyConnectionService, 89860115881029413909, UserHandle{0}}]: PCR.oR@AOY 
    Line 10553: 12-19 09:17:32.351 V/Telecom (  988): NewOutgoingCallIntentBroadcaster: Processing call intent in OutgoingCallIntentBroadcaster.: PCR.oR@AOY 
    Line 10872: 12-19 09:17:32.406 V/Telecom (  988): NewOutgoingCallIntentBroadcaster: isPotentialEmergencyNumber = false: PCR.oR@AOY 
    Line 10877: 12-19 09:17:32.407 I/Telecom (  988): NewOutgoingCallIntentBroadcaster: Sending NewOutgoingCallBroadcast for [TC@2, CONNECTING, null, tel:10010, A, childs(0), has_parent(false), [Capabilities:], [Properties:]] to UserHandle{0}: PCR.oR@AOY 
    Line 10878: 12-19 09:17:32.408 V/Telecom (  988): NewOutgoingCallIntentBroadcaster: Broadcasting intent: Intent { act=android.intent.action.NEW_OUTGOING_CALL flg=0x10000000 (has extras) }.: PCR.oR@AOY 
    Line 11902: 12-19 09:17:33.374 V/Telecom (  988): NewOutgoingCallBroadcastIntentReceiver: onReceive: Intent { act=android.intent.action.NEW_OUTGOING_CALL flg=0x10000010 (has extras) }: NOCBIR.oR@AOw 
    Line 11903: 12-19 09:17:33.374 I/Telecom (  988): NewOutgoingCallBroadcastIntentReceiver: Received new-outgoing-call-broadcast for [TC@2, CONNECTING, null, tel:10010, A, childs(0), has_parent(false), [Capabilities:], [Properties:]] with data 10010: NOCBIR.oR@AOw 
    Line 11950: 12-19 09:17:33.426 V/Telecom (  988): NewOutgoingCallBroadcastIntentReceiver: Call number unmodified after new outgoing call intent broadcast.: NOCBIR.oR@AOw 
    Line 11951: 12-19 09:17:33.426 D/Telecom (  988): CallsManager: broadcastCallPlacedIntent Entry: NOCBIR.oR@AOw 
    Line 11954: 12-19 09:17:33.427 D/Telecom (  988): CallsManager: Creating a new outgoing call with handle: tel:10010: NOCBIR.oR@AOw 
    Line 12034: 12-19 09:17:33.495 D/Telecom (  988): CallsManager: [TC@2, CONNECTING, null, tel:10010, A, childs(0), has_parent(false), [Capabilities:], [Properties:]] Starting with speakerphone because car is docked.: NOCBIR.oR@AOw 
    Line 12038: 12-19 09:17:33.498 V/Telecom (  988): CreateConnectionProcessor: process: NOCBIR.oR@AOw 
    Line 12044: 12-19 09:17:33.513 I/Telecom (  988): PhoneAccountRegistrar: SimCallManager queried, returning: null: NOCBIR.oR@AOw
    Line 12045: 12-19 09:17:33.513 V/Telecom (  988): CreateConnectionProcessor: setConnectionManager, not changing: NOCBIR.oR@AOw
    Line 12046: 12-19 09:17:33.514 V/Telecom (  988): CreateConnectionProcessor: attemptNextPhoneAccount: NOCBIR.oR@AOw 
    Line 12047: 12-19 09:17:33.515 I/Telecom (  988): CreateConnectionProcessor: Trying attempt CallAttemptRecord(PhoneAccountHandle{TelephonyConnectionService, 89860115881029413909, UserHandle{0}},PhoneAccountHandle{TelephonyConnectionService, 89860115881029413909, UserHandle{0}}): NOCBIR.oR@AOw 
    Line 12050: 12-19 09:17:33.517 D/Telecom (  988): ConnectionServiceWrapper: createConnection([TC@2, CONNECTING, com.android.phone/com.android.services.telephony.TelephonyConnectionService, tel:10010, A, childs(0), has_parent(false), [Capabilities:], [Properties:]]) via ComponentInfo{com.android.phone/com.android.services.telephony.TelephonyConnectionService}.: NOCBIR.oR@AOw 
    Line 12051: 12-19 09:17:33.517 D/Telecom (  988): ConnectionServiceWrapper: bind(): NOCBIR.oR@AOw 
    Line 12073: 12-19 09:17:33.553 D/Telecom (  988): ConnectionServiceWrapper: Telecom -> ConnectionService: addConnectionServiceAdapter com.android.server.telecom.ConnectionServiceWrapper$Adapter@edb67c1: SBC.oSC@AO0 
    Line 12077: 12-19 09:17:33.558 D/TelecomFramework( 1489): : Enqueueing pre-init request TC@2 
    Line 12090: 12-19 09:17:33.585 D/TelecomFramework( 1489): TelephonyConnectionService: createConnection, callManagerAccount: PhoneAccountHandle{TelephonyConnectionService, 89860115881029413909, UserHandle{0}}, callId: TC@2, request: ConnectionRequest tel:10010 Bundle[mParcelledData.dataSize=392], isIncoming: false, isUnknown: false 
    Line 12092: 12-19 09:17:33.587 I/Telephony( 1489): TelephonyConnectionService: onCreateOutgoingConnection, request: ConnectionRequest tel:10010 Bundle[mParcelledData.dataSize=392] 
    Line 12093: 12-19 09:17:33.589 D/Telephony( 1489): TelephonyConnectionService: onCreateOutgoingConnection, ConnectionRequest.PhoneAccountHandle{TelephonyConnectionService, 89860115881029413909, UserHandle{0}} 
                12-19 09:17:33.645 D/Telephony( 1489): TelephonyConnectionService: Service state:0, isAirplaneModeOn:false
    Line 12196: 12-19 09:17:33.764 D/GsmCdmaPhone( 1489): [GsmCdmaPhone] imsUseEnabled=false, useImsForEmergency=false, useImsForUt=false, isUt=false, imsPhone=Handler (com.android.internal.telephony.imsphone.ImsPhone) {cea3f01}, imsPhone.isVolteEnabled()=false, imsPhone.isVowifiEnabled()=false, imsPhone.isVideoEnabled()=false, imsPhone.getServiceState().getState()=1 
    Line 12200: 12-19 09:17:33.765 W/GsmCdmaPhone( 1489): IMS: imsphone = Handler (com.android.internal.telephony.imsphone.ImsPhone) {cea3f01}isEmergencyNumber = false 
    Line 12201: 12-19 09:17:33.765 W/GsmCdmaPhone( 1489): service state = 1 
    Line 12202: 12-19 09:17:33.765 D/GsmCdmaPhone( 1489): [GsmCdmaPhone] Trying (non-IMS) CS call 
    Line 12240: 12-19 09:17:33.796 D/GsmCdmaPhone( 1489): [GsmCdmaPhone] dialing w/ mmi 'null'... 
    Line 12258: 12-19 09:17:33.808 D/RILJ    ( 1489): [3939]> SET_MUTE false [SUB0] 
    Line 12270: 12-19 09:17:33.815 I/AT      ( 1015): AT> AT+CMUT=0 (RIL_CMD_READER_2, tid:515433460816)  
    Line 12273: 12-19 09:17:33.817 D/RILJ    ( 1489): [3940]> DIAL [SUB0] 
    Line 12426: 12-19 09:17:33.874 D/TelecomFramework( 1489): TelephonyConnectionService: createConnection, connection: [TelephonyConnection objId:156910251 telecomCallID:TC@2 type:gsm state:DIALING capabilities:[Capabilities: CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_CANNOT_DOWNGRADE_VIDEO_TO_AUDIO CAPABILITY_SEPARATE_FROM_CONFERENCE CAPABILITY_DISCONNECT_FROM_CONFERENCE] properties:[Properties:] address:tel:10010 originalConnection: callId: TC@2 incoming: false state: DIALING post dial state: NOT_STARTED partOfConf:N] 
    Line 12440: 12-19 09:17:33.881 V/TelecomFramework( 1489): TelephonyConnectionService: createConnection, number: 10010, state: DIALING, capabilities: [Capabilities: CAPABILITY_SUPPORT_HOLD CAPABILITY_MUTE CAPABILITY_CANNOT_DOWNGRADE_VIDEO_TO_AUDIO CAPABILITY_SEPARATE_FROM_CONFERENCE CAPABILITY_DISCONNECT_FROM_CONFERENCE], properties: [Properties:]
    12-19 09:17:33.881 D/TelecomFramework( 1489): TelephonyConnectionService: createConnection, calling handleCreateConnectionSuccessful TC@2

总结

通过上面流程的分析,和部分逻辑代码的跟踪,我们可以大致了解整个拨号流程所涉及到的目录和类,大致明白了整个过程中的一些状态判断和逻辑处理,后续还会对incallUI界面的构成和流程中某些细分领域的详细研究。

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