呼叫转移设置

Android5.0之后的版本，手机的CallSetting设置一般在package/APPs/service/Telephony中

下面为呼叫转移流程图，包括应用层与RIL的request

1.CallFeartureSettingActivity.java为通话设置入口

//在谷歌的源码中没有这个类，可以直接看2、CallFeatureSetting

在onResume方法中判断手机是单卡还是双卡

单卡直接通过CallFeatureSetting进入补充业务的设置界面，双卡先进入PhoneAccountSettingActivity的双卡选择界面，再通过PhoneAccountSettingFragmentNew选择某个sim卡，以intent进入CallFeatureSetting的activity

2.CallFeatureSetting设置补充业务

CallFeatureSetting中的onResume中调用init，

if (carrierConfig.getBoolean(CarrierConfigManager.KEY_WORLD_PHONE_BOOL)) {

cdmaOptions.setIntent(mSubscriptionInfoHelper.getIntent(CdmaCallOptions.class));

gsmOptions.setIntent(mSubscriptionInfoHelper.getIntent(GsmUmtsCallOptions.class));

} else {

prefSet.removePreference(cdmaOptions);

prefSet.removePreference(gsmOptions);

int phoneType = mPhone.getPhoneType();

if (carrierConfig.getBoolean(CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_settings_BOOL)) {

prefSet.removePreference(fdnButton);

} else {

if (phoneType == Phoneconstants.PHONE_TYPE_CDMA) {

prefSet.removePreference(fdnButton);//固定拨号

if (!carrierConfig.getBoolean(

CarrierConfigManager.KEY_VOICE_PRIVACY_disable_UI_BOOL)) {

addPreferencesFromResource(R.xml.cdma_call_privacy);

}

} else if (phoneType == PhoneConstants.PHONE_TYPE_GSM) {

if (carrierConfig.getBoolean(

CarrierConfigManager.KEY_ADDITIONAL_CALL_SETTING_BOOL)) {

addPreferencesFromResource(R.xml.gsm_umts_call_options);

GsmUmtsCallOptions.init(prefSet, mSubscriptionInfoHelper);

}

} else {

throw new IllegalStateException("unexpected phone type: " + phoneType);

}

}

GsmUmtsCallOption.init(preferencescreen,SubscriptionIfoHelper)为补充业务的preference建立对应的intent

63 public static void init(PreferenceScreen prefScreen, SubscriptionInfoHelper subInfoHelper) {

64 Preference callForwardingPref = prefScreen.findPreference(CALL_FORWARDING_KEY);

65 callForwardingPref.setIntent(subInfoHelper.getIntent(GsmUmtsCallForwardOptions.class));

66

67 Preference additionalGsmSettingsPref =

68 prefScreen.findPreference(ADDITIONAL_GSM_SETTINGS_KEY);

69 additionalGsmSettingsPref.setIntent(

70 subInfoHelper.getIntent(GsmUmtsAdditionalCallOptions.class));

不同的补充业务会转入不同的activity，呼叫转移业务对应的activity为GsmUmtsCallForwardOption。

3. GsmUmtsCallForwardOption呼叫转移的activity

在onResume中进行界面初始化，调用init函数，

@Override

public void onResume() {

super.onResume();

if (mFirstResume) {

if (mIcicle == null) {

if (DBG) Log.d(LOG_TAG, "start to init ");

mPreferences.get(MinitIndex).init(this, false, mPhone);

} else {

mInitIndex = mPreferences.size();

for (CallForwardEditPreference pref : mPreferences) {

Bundle bundle = mIcicle.getParcelable(pref.getKey());

pref.setToggled(bundle.getBoolean(KEY_TOGGLE));

CallForwardInfo cf = new CallForwardInfo();

cf.number = bundle.getString(KEY_NUMBER);

cf.status = bundle.getInt(KEY_STATUS);

pref.handleCallForwardResult(cf);

pref.init(this, true, mPhone);

}

}

mFirstResume = false;

mIcicle = null;

}

}

在初次进入时会进行四种呼叫转移的初始化，因为四个呼叫转移都是CallForwardEditPreference类，所以具体每个Preference的点击动作应该看CallForwardEditPreference类；CallForwardEditPreference通过Myhandle的消息处理handlemessage，分别为handleGetCFresponse(设置新CF)与handleSetCFResponse (读取CF状态)。

CallForwardEditPreference分为始终转接，占线时转接，无人接听时转接和无法接听时转接四种情况，也就是四个CallForwardEditPreference，其中init函数是获取当前呼叫转移设置的代码。

void init(TimeConsumingPreferenceListener listener, boolean skipReading, Phone phone) {

mPhone = phone;

mTcpListener = listener;

if (!skipReading) {

mPhone.getCallForwardingOption(reason,

mhandler.obtainMessage(MyHandler.MESSAGE_GET_CF,

// unused in this case

commandsInterface.CF_ACTION_DISABLE,

MyHandler.MESSAGE_GET_CF, null));

if (mTcpListener != null) {

mTcpListener.onStarted(this, true);

}

}

}

4. GsmCdmaPhone

其中函数getCallForwardingOption这是个phone的接口方法，继承自接口PhoneInternalInterface

作为父类，真正的实现代码在GsmCdmaPhone.java上

@Override

public void getCallForwardingOption(int commandInterfaceCFReason, Message onComplete) {

if (isPhoneTypeGsm()) {

Phone imsPhone = mImsPhone;

//判断是否为imsPhone，是的话走ImsPhone(PS)流程，不是的话走CS流程

if ((imsPhone != null)

&& ((imsPhone.getServiceState().getState() == ServiceState.STATE_IN_SERVICE)

|| imsPhone.isUtEnabled())) {

imsPhone.getCallForwardingOption(commandInterfaceCFReason, onComplete);

return;

}

if (isvalidCommandInterfaceCFReason(commandInterfaceCFReason)) {

if (DBG) logd("requesting call forwarding query.");

Message resp;

if (commandInterfaceCFReason == CF_REASON_UNconditional) {

resp = obtainMessage(EVENT_GET_CALL_FORWARD_DONE, onComplete);

} else {

resp = onComplete;

}

mCi.queryCallforwardstatus(commandInterfaceCFReason, 0, null, resp);

}

} else {

loge("getCallForwardingOption: not possible in CDMA");

}

}

首先分析走CS流程，mCi为Phone类中的CommandsInterface接口，而CommandsInterface的接口方法都在RIL类中实现

5.RIL

调用函数RIL.queryCallForwardStatus(int cfReason, int serviceClass, String number, Message response)

@Override

public void queryCallForwardStatus(int cfReason, int serviceClass,

String number, Message result) {

IRadio radioProxy = getRadioProxy(result);

//将消息result包装为IRadio发送request到modem

if (radioProxy != null) {

RILRequest rr = obtainRequest(RIL_REQUEST_QUERY_CALL_FORWARD_STATUS, result,

mRILDefaultWorkSource);

if (RILJ_LOGD) {

riljLog(rr.serialString() + "> " + requestToString(rr.mRequest)

+ " cfreason = " + cfReason + " serviceClass = " + serviceClass);

}

android.hardware.radio.V1_0.CallForwardInfo cfInfo =

new android.hardware.radio.V1_0.CallForwardInfo();

cfInfo.reason = cfReason;

cfInfo.serviceClass = serviceClass;

cfInfo.toa = PhoneNumberUtils.toaFromString(number);

cfInfo.number = convertNullToemptyString(number);

cfInfo.timeSeconds = 0;

try {

radioProxy.getCallForwardStatus(rr.mSerial, cfInfo);

} catch (RemoteException | runtimeexception e) {

handleRadioProxyExceptionForRR(rr, "queryCallForwardStatus", e);

}

}

}

IRadio为c++程序，这是发送Requst的过程，下面就超出了本组的学习内容

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