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你可能喜欢一、IMS开机初始化 (如果图片看不清的话，可以右键选择在查看图片，或者把图片另存到自己电脑再查看。)本文来自http://blog.csdn.net/linyongan，转载请务必注明出处。1.1 监控IMS Service PhoneApp进程是在系统开机时启动的，Phone进程初始化的时候（步骤1～6），在创建GSMPhone或者CDMAPhone之后，会执行监控IMS Service的流程，也就是流程图上的步骤7，在PhoneFactory.Java的makeDefaultPhone()方法中：&code class="hljs java has-numbering"&
&span class="hljs-javadoc"&/**
* FIXME replace this with some other way of making these
* instances
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&static&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&makeDefaultPhone&/span&(Context context) {......&span class="hljs-comment"&//先根据phoneType创建GSMPhone或者CDMAPhone&/span&&span class="hljs-keyword"&for&/span& (&span class="hljs-keyword"&int&/span& i = &span class="hljs-number"&0&/span&; i & numP i++) {
PhoneBase phone = &span class="hljs-keyword"&null&/span&;
&span class="hljs-keyword"&int&/span& phoneType = TelephonyManager.getPhoneType(networkModes[i]);
&span class="hljs-keyword"&if&/span& (phoneType == PhoneConstants.PHONE_TYPE_GSM) {phone = TelephonyPluginDelegate.getInstance().makeGSMPhone(context,sCommandsInterfaces[i], sPhoneNotifier, i);
} &span class="hljs-keyword"&else&/span& &span class="hljs-keyword"&if&/span& (phoneType == PhoneConstants.PHONE_TYPE_CDMA) {phone = TelephonyPluginDelegate.getInstance().makeCDMALTEPhone(context,sCommandsInterfaces[i], sPhoneNotifier, i);
Rlog.i(LOG_TAG, &span class="hljs-string"&"Creating Phone with type = "&/span& + phoneType + &span class="hljs-string"&" sub = "&/span& + i);
sProxyPhones[i] = TelephonyPluginDelegate.getInstance().makePhoneProxy(phone);}......&span class="hljs-comment"&//在makeDefaultPhone()方法的最后，等所有要初始化的操作&/span&&span class="hljs-comment"&//(如创建RIL，Default Phone等)都执行完之后。&/span&&span class="hljs-keyword"&for&/span& (&span class="hljs-keyword"&int&/span& i = &span class="hljs-number"&0&/span&; i & numP i++) {
&span class="hljs-comment"&//开始执行监控IMS Service的流程&/span&
sProxyPhones[i].startMonitoringImsService();}
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&/ul&接着来到PhoneProxy.java的startMonitoringImsService()方法中，可以看到在监控IMS service之前必须先创建Default Phone。&code class="hljs cs has-numbering"&
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&startMonitoringImsService&/span&() {&span class="hljs-comment"&//必须先创建Default Phone&/span&&span class="hljs-keyword"&if&/span& (mActivePhone != &span class="hljs-keyword"&null&/span&) {
mActivePhone.startMonitoringImsService();}
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&/ul&接着来到PhoneBase.java的startMonitoringImsService()方法中，来到这里，主要是为了注册上监听IMS SERVICE UP或者DOWN的广播。等到ImsService onCreate()的时候，会发出ACTION_IMS_SERVICE_UP的广播，然后PhoneBase接收到广播之后就可以执行创建IMSPhone对象（1.3小节会详细讲）和通知modem turn on IMS的流程（1.4小节会详细讲）。&code class="hljs java has-numbering"&
&span class="hljs-annotation"&@Override&/span&
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&startMonitoringImsService&/span&() {&span class="hljs-keyword"&if&/span& (getPhoneType() == PhoneConstants.PHONE_TYPE_SIP) {
&span class="hljs-keyword"&return&/span&;}&span class="hljs-keyword"&synchronized&/span&(PhoneProxy.lockForRadioTechnologyChange) {
IntentFilter filter = &span class="hljs-keyword"&new&/span& IntentFilter();
filter.addAction(ImsManager.ACTION_IMS_SERVICE_UP);
filter.addAction(ImsManager.ACTION_IMS_SERVICE_DOWN);
&span class="hljs-comment"&//注册监听IMS SERVICE UP或者DOWN的广播&/span&
mContext.registerReceiver(mImsIntentReceiver, filter);
mImsIntentReceiverRegistered = &span class="hljs-keyword"&true&/span&;
&span class="hljs-comment"&// Monitor IMS service - but first poll to see if already up (could miss&/span&
&span class="hljs-comment"&// intent)&/span&
&span class="hljs-comment"&//初始化ImsManager对象&/span&
ImsManager imsManager = ImsManager.getInstance(mContext, getPhoneId());
&span class="hljs-comment"&//IMS service目前还不可用&/span&
&span class="hljs-keyword"&if&/span& (imsManager != &span class="hljs-keyword"&null&/span& && imsManager.isServiceAvailable()) {mImsServiceReady = &span class="hljs-keyword"&true&/span&;updateImsPhone();ImsManager.updateImsServiceConfig(mContext, mPhoneId, &span class="hljs-keyword"&false&/span&);
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&/ul&1.2 IMS Service的启动
步骤11 ：ImsServiceAutoboot.java监听了ACTION_BOOT_COMPLETED和ACTION_SIM_STATE_CHANGED广播&code class="hljs lasso has-numbering"&
&span class="hljs-comment"&//ClassName是ImsService，所以下面启动的Service就是Ims Service&/span&
&span class="hljs-keyword"&private&/span& final static &span class="hljs-built_in"&String&/span& mClassName &span class="hljs-subst"&=&/span& ImsService&span class="hljs-built_in"&.&/span&class&span class="hljs-built_in"&.&/span&getName();
&span class="hljs-keyword"&public&/span& &span class="hljs-literal"&void&/span& onReceive(Context context, Intent intent) {&span class="hljs-built_in"&String&/span& intentAction &span class="hljs-subst"&=&/span& intent&span class="hljs-built_in"&.&/span&getAction();&span class="hljs-comment"&//在开机的时候，会收到ACTION_SIM_STATE_CHANGED广播&/span&&span class="hljs-keyword"&if&/span& ((Intent&span class="hljs-built_in"&.&/span&ACTION_BOOT_COMPLETED&span class="hljs-built_in"&.&/span&&span class="hljs-keyword"&equals&/span&(intentAction))
&span class="hljs-subst"&||&/span&
(ACTION_SIM_STATE_CHANGED&span class="hljs-built_in"&.&/span&&span class="hljs-keyword"&equals&/span&(intentAction))) {
&span class="hljs-comment"&//如果这时候Service还没有启动&/span&
&span class="hljs-keyword"&if&/span& (&span class="hljs-subst"&!&/span&isServiceRunning(context)) {&span class="hljs-keyword"&Log&/span&&span class="hljs-built_in"&.&/span&d(&span class="hljs-built_in"&TAG&/span&, &span class="hljs-string"&"Starting "&/span& &span class="hljs-subst"&+&/span& mClassName &span class="hljs-subst"&+&/span& &span class="hljs-string"&" : "&/span& &span class="hljs-subst"&+&/span& intentAction &span class="hljs-subst"&+&/span& &span class="hljs-string"&" received. "&/span&);&span class="hljs-comment"&//启动Service&/span&startService(context);
} &span class="hljs-keyword"&else&/span& {&span class="hljs-keyword"&Log&/span&&span class="hljs-built_in"&.&/span&d(&span class="hljs-built_in"&TAG&/span&, mClassName &span class="hljs-subst"&+&/span& &span class="hljs-string"&" is already running. "&/span& &span class="hljs-subst"&+&/span&
intentAction &span class="hljs-subst"&+&/span& &span class="hljs-string"&" ignored. "&/span&);
}} &span class="hljs-keyword"&else&/span& {
&span class="hljs-keyword"&Log&/span&&span class="hljs-built_in"&.&/span&e(&span class="hljs-built_in"&TAG&/span&, &span class="hljs-string"&"Received Intent: "&/span& &span class="hljs-subst"&+&/span& intent&span class="hljs-built_in"&.&/span&toString());}
&span class="hljs-keyword"&private&/span& &span class="hljs-literal"&void&/span& startService(Context context) {ComponentName comp &span class="hljs-subst"&=&/span& &span class="hljs-literal"&new&/span& ComponentName(context&span class="hljs-built_in"&.&/span&getPackageName(), mClassName);&span class="hljs-comment"&//启动Ims Service&/span&ComponentName service &span class="hljs-subst"&=&/span& context&span class="hljs-built_in"&.&/span&startService(&span class="hljs-literal"&new&/span& Intent()&span class="hljs-built_in"&.&/span&setComponent(comp));&span class="hljs-keyword"&if&/span& (service &span class="hljs-subst"&==&/span& &span class="hljs-built_in"&null&/span&) {
&span class="hljs-keyword"&Log&/span&&span class="hljs-built_in"&.&/span&e(&span class="hljs-built_in"&TAG&/span&, &span class="hljs-string"&"Could Not Start Service "&/span& &span class="hljs-subst"&+&/span& comp&span class="hljs-built_in"&.&/span&toString());} &span class="hljs-keyword"&else&/span& {
&span class="hljs-keyword"&Log&/span&&span class="hljs-built_in"&.&/span&e(&span class="hljs-built_in"&TAG&/span&, mClassName &span class="hljs-subst"&+&/span& &span class="hljs-string"&" service Started Successfully"&/span&);}
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&/ul&在ImsService.java的onCreate()方法中&code class="hljs java has-numbering"&
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&onCreate&/span&() {&span class="hljs-keyword"&super&/span&.onCreate();Log.d (LOG_TAG, &span class="hljs-string"&"ImsService created!"&/span&);mServiceSub = &span class="hljs-keyword"&new&/span& ImsServiceSub[getNumSubscriptions()];&span class="hljs-keyword"&for&/span& (&span class="hljs-keyword"&int&/span& i = &span class="hljs-number"&0&/span&; i & getNumSubscriptions(); i++) {
&span class="hljs-comment"&//在这里初始化ImsServiceSub对象，在ImsServiceSub的&/span&
&span class="hljs-comment"&//构造方法中进而会初始化ImsSenderRxr、ImsServiceSubHandler&/span&
&span class="hljs-comment"&//等对象并且监听IMS、Call等的状态变化；&/span&
&span class="hljs-comment"&//（ImsSenderRxr跟RILJ作用类似，可以跟Qcril交互，&/span&
&span class="hljs-comment"&// IMS的流程会走ImsSenderRxr而不会走RIL.java）&/span&
mServiceSub[i] = &span class="hljs-keyword"&new&/span& ImsServiceSub(i + &span class="hljs-number"&1&/span&, &span class="hljs-keyword"&this&/span&);}ServiceManager.addService(&span class="hljs-string"&"ims"&/span&, mBinder);Intent intent = &span class="hljs-keyword"&new&/span& Intent(ImsManager.ACTION_IMS_SERVICE_UP);intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);&span class="hljs-comment"&//先判断是否是双卡&/span&&span class="hljs-keyword"&if&/span& (TelephonyManager.getDefault().isMultiSimEnabled()) {
&span class="hljs-comment"&//如果是双卡，还需把ImsPhoneId传递过去&/span&
intent.putExtra(ImsManager.EXTRA_PHONE_ID, mImsPhoneId);
&span class="hljs-comment"&//发送广播，通知PhoneBase&/span&
&span class="hljs-keyword"&this&/span&.sendStickyBroadcast(intent);} &span class="hljs-keyword"&else&/span& {
&span class="hljs-keyword"&this&/span&.sendStickyBroadcast(intent);}&span class="hljs-keyword"&final&/span& &span class="hljs-keyword"&int&/span& defaultSub = &span class="hljs-number"&1&/span&;ImsVideoGlobals.init(mServiceSub[defaultSub-&span class="hljs-number"&1&/span&], &span class="hljs-keyword"&this&/span&);&span class="hljs-comment"&/* Check if any change in socket communication is required */&/span&initSubscriptionStatus();&span class="hljs-comment"&/* Initialize Call Deflect support to not supported */&/span&initCallDeflectStatus();
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&/ul&在 IMS Service的启动之后，回到PhoneBase.java的mImsIntentReceiver广播接收器中&code class="hljs java has-numbering"&
&span class="hljs-keyword"&private&/span& BroadcastReceiver mImsIntentReceiver = &span class="hljs-keyword"&new&/span& BroadcastReceiver() {&span class="hljs-annotation"&@Override&/span&&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&onReceive&/span&(Context context, Intent intent) {
Rlog.d(LOG_TAG, &span class="hljs-string"&"mImsIntentReceiver: action "&/span& + intent.getAction());
&span class="hljs-comment"&//先判断intent中是否包含Phone Id&/span&
&span class="hljs-keyword"&if&/span& (intent.hasExtra(ImsManager.EXTRA_PHONE_ID)) {&span class="hljs-keyword"&int&/span& extraPhoneId = intent.getIntExtra(ImsManager.EXTRA_PHONE_ID,SubscriptionManager.INVALID_PHONE_INDEX);Rlog.d(LOG_TAG, &span class="hljs-string"&"mImsIntentReceiver: extraPhoneId = "&/span& + extraPhoneId);&span class="hljs-comment"&//如果获取到的Phone Id等于-1或者Phone Id跟当前get到的&/span&&span class="hljs-comment"&//phone Id不一样，说明有误，所以直接return&/span&&span class="hljs-keyword"&if&/span& (extraPhoneId == SubscriptionManager.INVALID_PHONE_INDEX ||extraPhoneId != getPhoneId()) {
&span class="hljs-keyword"&return&/span&;}
&span class="hljs-keyword"&synchronized&/span& (PhoneProxy.lockForRadioTechnologyChange) {&span class="hljs-comment"&//如果ACTION是IMS_SERVICE_UP，说明IMS Service已启动&/span&&span class="hljs-keyword"&if&/span& (intent.getAction().equals(ImsManager.ACTION_IMS_SERVICE_UP)) {
&span class="hljs-comment"&//将标志设置成true，在更新ImsPhone时会用到&/span&
mImsServiceReady = &span class="hljs-keyword"&true&/span&;
&span class="hljs-comment"&//创建或者更新ImsPhone（1.3小节会详细讲）&/span&
updateImsPhone();
&span class="hljs-comment"&//更新配置信息，通知Modem turn On/Off IMS（1.4小节会详细讲）&/span&
ImsManager.updateImsServiceConfig(mContext, mPhoneId, &span class="hljs-keyword"&false&/span&);} &span class="hljs-keyword"&else&/span& &span class="hljs-keyword"&if&/span& (intent.getAction().equals(ImsManager.ACTION_IMS_SERVICE_DOWN)){
mImsServiceReady = &span class="hljs-keyword"&false&/span&;
updateImsPhone();}
};&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&/ul&1.3 创建ImsPhone &code class="hljs cs has-numbering"&
&span class="hljs-keyword"&protected&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&updateImsPhone&/span&() {Rlog.d(LOG_TAG, &span class="hljs-string"&"updateImsPhone"&/span&+ &span class="hljs-string"&" mImsServiceReady="&/span& + mImsServiceReady);&span class="hljs-comment"&//如果ImsService已启动并且ImsPhone还没有被创建&/span&&span class="hljs-keyword"&if&/span& (mImsServiceReady && (mImsPhone == &span class="hljs-keyword"&null&/span&)) {
&span class="hljs-comment"&//通过PhoneFactory创建ImsPhone，这里的this就是default Phone&/span&
&span class="hljs-comment"&//ImsPhone&/span&
mImsPhone = PhoneFactory.makeImsPhone(mNotifier, &span class="hljs-keyword"&this&/span&);
&span class="hljs-comment"&//registerPhone的作用是把新创建的ImsPhone对象添加到CallManager&/span&
&span class="hljs-comment"&//的Phone list中，并且为ImsPhone注册监听各种Phone States&/span&
CallManager.getInstance().registerPhone(mImsPhone);
mImsPhone.registerForSilentRedial(
&span class="hljs-keyword"&this&/span&, EVENT_INITIATE_SILENT_REDIAL, &span class="hljs-keyword"&null&/span&);} &span class="hljs-keyword"&else&/span& &span class="hljs-keyword"&if&/span& (!mImsServiceReady && (mImsPhone != &span class="hljs-keyword"&null&/span&)) {
CallManager.getInstance().unregisterPhone(mImsPhone);
mImsPhone.unregisterForSilentRedial(&span class="hljs-keyword"&this&/span&);
mImsPhone.dispose();
&span class="hljs-comment"&// Potential GC issue if someone keeps a reference to ImsPhone.&/span&
&span class="hljs-comment"&// However: this change will make sure that such a reference does&/span&
&span class="hljs-comment"&// not access functions through NULL pointer.&/span&
&span class="hljs-comment"&//mImsPhone.removeReferences();&/span&
mImsPhone = &span class="hljs-keyword"&null&/span&;}
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&/ul&接着PhoneFactory还是调了ImsPhoneFactory的makePhone()方法&code class="hljs java has-numbering"&
&span class="hljs-javadoc"&/**
ImsPhone} object.
*&span class="hljs-javadoctag"& @return&/span& the
ImsPhone} object or null if the exception occured
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&static&/span& ImsPhone &span class="hljs-title"&makeImsPhone&/span&(PhoneNotifier phoneNotifier, Phone defaultPhone) {&span class="hljs-keyword"&return&/span& ImsPhoneFactory.makePhone(sContext, phoneNotifier, defaultPhone);
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&/ul&而ImsPhoneFactory中只有一个方法，也就是&code class="hljs cs has-numbering"&
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&static&/span& ImsPhone &span class="hljs-title"&makePhone&/span&(Context context,
PhoneNotifier phoneNotifier, Phone defaultPhone) {&span class="hljs-keyword"&try&/span& {
&span class="hljs-comment"&//直接new ImsPhone，在ImsPhone的构造方法中又&/span&
&span class="hljs-comment"&//会new ImsPhoneCallTracker,在ImsPhoneCallTracker的&/span&
&span class="hljs-comment"&//构造方法中，会执行获取IMS注册状态的流程（第二节会详细讲）&/span&
&span class="hljs-keyword"&return&/span& &span class="hljs-keyword"&new&/span& ImsPhone(context, phoneNotifier, defaultPhone);} &span class="hljs-keyword"&catch&/span& (Exception e) {
Rlog.e(&span class="hljs-string"&"VoltePhoneFactory"&/span&, &span class="hljs-string"&"makePhone"&/span&, e);
&span class="hljs-keyword"&return&/span& &span class="hljs-keyword"&null&/span&;}
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&/ul&到这里，ImsPhone就被创建啦。1.4 通知Modem turn On IMS 在PhoneBase.java的mImsIntentReceiver广播接收器中，除了创建ImsPhone对象，还调了ImsManager.java的updateImsServiceConfig()方法更新配置信息。&code class="hljs java has-numbering"&
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&static&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&updateImsServiceConfig&/span&(Context context, &span class="hljs-keyword"&int&/span& phoneId, &span class="hljs-keyword"&boolean&/span& force) {&span class="hljs-keyword"&final&/span& ImsManager imsManager = ImsManager.getInstance(context, phoneId);&span class="hljs-comment"&//imsManager.mConfigUpdated的值还是false的话，说明还没有更新过&/span&&span class="hljs-keyword"&if&/span& (imsManager != &span class="hljs-keyword"&null&/span& && (!imsManager.mConfigUpdated || force)) {
&span class="hljs-keyword"&try&/span& {&span class="hljs-comment"&//如果Volte、VideoCall、WfC（Wifi Calling）任意一项可用且enable的话，那么就要turn On IMS&/span&&span class="hljs-keyword"&boolean&/span& turnOn = imsManager.updateVolteFeatureValue();turnOn |= imsManager.updateVideoCallFeatureValue();turnOn |= imsManager.updateWfcFeatureAndProvisionedValues();&span class="hljs-keyword"&if&/span& (turnOn) {
&span class="hljs-comment"&//通知modem turn On IMS，不同平台有不同的实现&/span&
imsManager.turnOnIms();} &span class="hljs-keyword"&else&/span& &span class="hljs-keyword"&if&/span& (getBooleanCarrierConfig(context,CarrierConfigManager.KEY_CARRIER_ALLOW_TURNOFF_IMS_BOOL)) {
imsManager.turnOffIms();}&span class="hljs-comment"&//把标志位设成true，除非强制更新，否则不会再进来这里&/span&imsManager.mConfigUpdated = &span class="hljs-keyword"&true&/span&;
} &span class="hljs-keyword"&catch&/span& (ImsException e) {loge(&span class="hljs-string"&"updateImsServiceConfig: "&/span& + e);imsManager.mConfigUpdated = &span class="hljs-keyword"&false&/span&;
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&/ul&二、获取IMS注册状态 (如果图片看不清的话，可以右键选择在查看图片，或者把图片另存到自己电脑再查看。) 获取IMS注册状态本来也属于开机是执行的流程，但是本段流程有点长，所以把它独立起来讲。紧跟着1.3节创建ImsPhone，在ImsPhone的构造方法中：&code class="hljs java has-numbering"&
ImsPhone(Context context, PhoneNotifier notifier, Phone defaultPhone) {&span class="hljs-keyword"&super&/span&(&span class="hljs-string"&"ImsPhone"&/span&, context, notifier);mDefaultPhone = (PhoneBase) defaultP&span class="hljs-comment"&//初始化ImsPhoneCallTracker对象&/span&mCT = &span class="hljs-keyword"&new&/span& ImsPhoneCallTracker(&span class="hljs-keyword"&this&/span&);......
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&/ul&而ImsPhoneCallTracker的构造方法中&code class="hljs cs has-numbering"&
ImsPhoneCallTracker(ImsPhone phone) {&span class="hljs-keyword"&this&/span&.mPhone =IntentFilter intentfilter = &span class="hljs-keyword"&new&/span& IntentFilter();intentfilter.addAction(ImsManager.ACTION_IMS_INCOMING_CALL);&span class="hljs-comment"&//注册监听来电的广播&/span&mPhone.getContext().registerReceiver(mReceiver, intentfilter);&span class="hljs-comment"&//启动新线程&/span&Thread t = &span class="hljs-keyword"&new&/span& Thread() {
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&run&/span&() {&span class="hljs-comment"&//执行Opens IMS service的流程&/span&getImsService();
}};t.start();
&span class="hljs-keyword"&private&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&getImsService&/span&() {&span class="hljs-keyword"&if&/span& (DBG) log(&span class="hljs-string"&"getImsService"&/span&);&span class="hljs-comment"&//先得到ImsManager对象&/span&mImsManager = ImsManager.getInstance(mPhone.getContext(), mPhone.getPhoneId());&span class="hljs-keyword"&try&/span& {
&span class="hljs-comment"&//然后调用它的open()方法获取到Service Id &/span&
&span class="hljs-comment"&//这里传递进去的serviceClass是ImsServiceClass.MMTEL（它的值是1）&/span&
mServiceId = mImsManager.open(ImsServiceClass.MMTEL,
createIncomingCallPendingIntent(),
mImsConnectionStateListener);
&span class="hljs-comment"&// Get the ECBM interface and set IMSPhone's listener object for notifications&/span&
getEcbmInterface().setEcbmStateListener(mPhone.mImsEcbmStateListener);
&span class="hljs-keyword"&if&/span& (mPhone.isInEcm()) {&span class="hljs-comment"&// Call exit ECBM which will invoke onECBMExited&/span&mPhone.exitEmergencyCallbackMode();
&span class="hljs-keyword"&int&/span& mPreferredTtyMode = Settings.Secure.getInt(mPhone.getContext().getContentResolver(),Settings.Secure.PREFERRED_TTY_MODE,Phone.TTY_MODE_OFF);
mImsManager.setUiTTYMode(mPhone.getContext(), mServiceId, mPreferredTtyMode, &span class="hljs-keyword"&null&/span&);} &span class="hljs-keyword"&catch&/span& (ImsException e) {
loge(&span class="hljs-string"&"getImsService: "&/span& + e);
&span class="hljs-comment"&//Leave mImsManager as null, then CallStateException will be thrown when dialing&/span&
mImsManager = &span class="hljs-keyword"&null&/span&;}
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&li&34&/li&&li&35&/li&&li&36&/li&&li&37&/li&&li&38&/li&&li&39&/li&&li&40&/li&&li&41&/li&&li&42&/li&&li&43&/li&&li&44&/li&&li&45&/li&&li&46&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&li&34&/li&&li&35&/li&&li&36&/li&&li&37&/li&&li&38&/li&&li&39&/li&&li&40&/li&&li&41&/li&&li&42&/li&&li&43&/li&&li&44&/li&&li&45&/li&&li&46&/li&&/ul&步骤3~5，主要对获取到的Service Id进行判断和存储 步骤6： ImsServiceSub.java的getServiceId()方法中，主要就是获取Service Id和向modem获取IMS的注册状态。&code class="hljs java has-numbering"&
&span class="hljs-javadoc"&/**
* Creates/updates the tracker object for the service class
*&span class="hljs-javadoctag"& @param&/span& serviceClass a service class specified in
ImsServiceClass}
For VoLTE service, it MUST be a
ImsServiceClass#MMTEL}.
*&span class="hljs-javadoctag"& @param&/span& incomingCallPendingIntent When an incoming call is received,
*the IMS service will call
PendingIntent#send(Context, int, Intent)} to
*send back the intent to the caller with
#INCOMING_CALL_RESULT_CODE}
*as the result code and the intent to fill in the call ID; It cannot be null
*&span class="hljs-javadoctag"& @param&/span& listener To listen to IMS It cannot be null
*&span class="hljs-javadoctag"& @return&/span& Unique identifier
&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&int&/span& &span class="hljs-title"&getServiceId&/span&(&span class="hljs-keyword"&int&/span& serviceClass, PendingIntent intent,
IImsRegistrationListener listener) {&span class="hljs-keyword"&int&/span& serviceId = &span class="hljs-number"&0&/span&; &span class="hljs-comment"&// O is not used - boundary value between error and correct value&/span&&span class="hljs-comment"&//如果serviceClass不是1&/span&&span class="hljs-keyword"&if&/span&(serviceClass != ImsServiceClass.MMTEL) {
&span class="hljs-comment"&//则返回-2，service Id为负数说明出错了。&/span&
serviceId = CODE_SERVICE_CLASS_NOT_SUPPORTED;} &span class="hljs-keyword"&else&/span& {
&span class="hljs-comment"&//先尝试从Map集合中获取ImsServiceClassTracker 对象&/span&
ImsServiceClassTracker tracker = mTrackerTable.get(&span class="hljs-keyword"&new&/span& Integer(serviceClass));
&span class="hljs-comment"&//获取不到&/span&
&span class="hljs-keyword"&if&/span& (tracker == &span class="hljs-keyword"&null&/span&) {&span class="hljs-comment"&//创建ImsServiceClassTracker对象&/span&tracker = &span class="hljs-keyword"&new&/span& ImsServiceClassTracker(serviceClass, intent, listener, mCi,mContext, &span class="hljs-keyword"&this&/span&);tracker.updateFeatureCapabilities(isVideoSupported(), isVoiceSupported());&span class="hljs-comment"&//将ImsServiceClassTracker对象放入Map集合中&/span&mTrackerTable.put(&span class="hljs-keyword"&new&/span& Integer(serviceClass), tracker);mServiceIdTable.put(&span class="hljs-keyword"&new&/span& Integer(tracker.getServiceId()), tracker);
} &span class="hljs-keyword"&else&/span& {&span class="hljs-comment"&//更新ImsServiceClassTracker对象的内容&/span&tracker.mIncomingCallIntent =tracker.mRegListener =
createFeatureCapabilityCallBackThread(listener);
&span class="hljs-comment"&//获取到service Id &/span&
serviceId = tracker.getServiceId();}Log.d(LOG_TAG, &span class="hljs-string"&"getServiceId returns "&/span& + serviceId);&span class="hljs-comment"&//向modem获取IMS的注册状态&/span&mCi.getImsRegistrationState(mHandler.obtainMessage(EVENT_IMS_STATE_DONE));&span class="hljs-keyword"&return&/span& serviceId;
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&li&34&/li&&li&35&/li&&li&36&/li&&li&37&/li&&li&38&/li&&li&39&/li&&li&40&/li&&li&41&/li&&li&42&/li&&li&43&/li&&li&44&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&li&34&/li&&li&35&/li&&li&36&/li&&li&37&/li&&li&38&/li&&li&39&/li&&li&40&/li&&li&41&/li&&li&42&/li&&li&43&/li&&li&44&/li&&/ul&modem返回IMS的注册状态信息&code class="language-java hljs
has-numbering"&&span class="hljs-annotation"&@Override&/span&&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&handleMessage&/span&(Message msg) {
.....&span class="hljs-keyword"&case&/span& EVENT_IMS_STATE_DONE:
ar = (AsyncResult) msg.
&span class="hljs-comment"&//对状态的处理&/span&
handleImsStateChanged(ar);
&span class="hljs-keyword"&break&/span&;
.....}&span class="hljs-keyword"&private&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&handleImsStateChanged&/span&(AsyncResult ar) {
log(&span class="hljs-string"&"handleImsStateChanged"&/span&);
&span class="hljs-comment"&//注册失败的错误码&/span&
&span class="hljs-keyword"&int&/span& errorCode = ImsReasonInfo.CODE_UNSPECIFIED;
&span class="hljs-comment"&//注册失败的消息，如REG99-unable to connect&/span&
String errorMessage = &span class="hljs-keyword"&null&/span&;
&span class="hljs-comment"&//注册状态有三种，分别是REGISTERED、NOT_REGISTERED、REGISTERING。&/span&
&span class="hljs-keyword"&int&/span& regState = ImsQmiIF.Registration.NOT_REGISTERED;
&span class="hljs-comment"&//LTE、WIFI或者IWLAN，默认是UNKNOWN&/span&
&span class="hljs-keyword"&int&/span& imsRat = ServiceState.RIL_RADIO_TECHNOLOGY_UNKNOWN;
&span class="hljs-keyword"&if&/span& (ar != &span class="hljs-keyword"&null&/span& && ar.exception == &span class="hljs-keyword"&null&/span& && ar.result &span class="hljs-keyword"&instanceof&/span& ImsQmiIF.Registration) {ImsQmiIF.Registration registration = (ImsQmiIF.Registration) ar.errorCode = registration.hasErrorCode() ? registration.getErrorCode(): ImsReasonInfo.CODE_UNSPECIFIED;errorMessage = registration.hasErrorMessage() ? registration.getErrorMessage() : &span class="hljs-keyword"&null&/span&;regState = registration.hasState() ? registration.getState(): ImsQmiIF.Registration.NOT_REGISTERED;imsRat = getRilRadioTech(registration);&span class="hljs-keyword"&if&/span& (regState != ImsQmiIF.Registration.NOT_REGISTERED) {
mCi.queryServiceStatus(mHandler.obtainMessage(EVENT_GET_SRV_STATUS));}
} &span class="hljs-keyword"&else&/span& {loge(&span class="hljs-string"&"handleImsStateChanged error"&/span&);
&span class="hljs-comment"&//创建ImsReasonInfo对象，传递到UI的话可以通过状态栏的形式提醒用户&/span&
ImsReasonInfo imsReasonInfo = &span class="hljs-keyword"&new&/span& ImsReasonInfo(
ImsReasonInfo.CODE_REGISTRATION_ERROR,
errorCode, errorMessage);
&span class="hljs-keyword"&for&/span& (Map.Entry&Integer, ImsServiceClassTracker& e : mTrackerTable.entrySet()) {&span class="hljs-comment"&//创建新线程，把状态信息传递给ImsPhoneCallTracker&/span&createRegCallBackThread(e.getValue().mRegListener, regState, imsReasonInfo, imsRat);
}}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&li&34&/li&&li&35&/li&&li&36&/li&&li&37&/li&&li&38&/li&&li&39&/li&&li&40&/li&&li&41&/li&&li&42&/li&&li&43&/li&&li&44&/li&&li&45&/li&&li&46&/li&&li&47&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&li&17&/li&&li&18&/li&&li&19&/li&&li&20&/li&&li&21&/li&&li&22&/li&&li&23&/li&&li&24&/li&&li&25&/li&&li&26&/li&&li&27&/li&&li&28&/li&&li&29&/li&&li&30&/li&&li&31&/li&&li&32&/li&&li&33&/li&&li&34&/li&&li&35&/li&&li&36&/li&&li&37&/li&&li&38&/li&&li&39&/li&&li&40&/li&&li&41&/li&&li&42&/li&&li&43&/li&&li&44&/li&&li&45&/li&&li&46&/li&&li&47&/li&&/ul&最终IMS的注册信息会传递到ImsPhoneCallTracker.java中&code class="hljs java has-numbering"&
&span class="hljs-javadoc"&/**
* Listen to the IMS service state change
&span class="hljs-keyword"&private&/span& ImsConnectionStateListener mImsConnectionStateListener =&span class="hljs-keyword"&new&/span& ImsConnectionStateListener() {&span class="hljs-annotation"&@Override&/span&&span class="hljs-keyword"&public&/span& &span class="hljs-keyword"&void&/span& &span class="hljs-title"&onImsConnected&/span&() {
&span class="hljs-keyword"&if&/span& (DBG) log(&span class="hljs-string"&"onImsConnected"&/span&);
&span class="hljs-comment"&//更新Service的状态&/span&
mPhone.setServiceState(ServiceState.STATE_IN_SERVICE);
&span class="hljs-comment"&//把IMSPhone的mImsRegistered值设置成true&/span&
mPhone.setImsRegistered(&span class="hljs-keyword"&true&/span&);}......
}&/code&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&/ul&&ul style="" class="pre-numbering"&&li&1&/li&&li&2&/li&&li&3&/li&&li&4&/li&&li&5&/li&&li&6&/li&&li&7&/li&&li&8&/li&&li&9&/li&&li&10&/li&&li&11&/li&&li&12&/li&&li&13&/li&&li&14&/li&&li&15&/li&&li&16&/li&&/ul&谷歌原生的流程到这里就结束了，ImsPhoneCallTracker.java还处于Framework层，如果想把IMS的注册状态上报给APP层，还需自己添加代码。比如添加并实现mPhone.notifyIMSRegisterStateChanged();假如IMS已注册上，并且VoLTE又是Enable的话，那么插入某些运营商（如T-mobile）的SIM卡就可以拨打VoLTE Call。
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