一、Dialer：

DialpadFragment.handleDialButtonPressed(PreCall.start()) → DialerUtils.startActivityWithErrorToast(placeCallOrMakeToast(context, intent)) → TelecomUtil.placeCall(getTelecomManager(context).placeCall()) → TelecomManager.placeCall()

二、Telecom Frameworks：

TelecomManager.placeCall() → ITelecomService.placeCall() → TelecomServiceImpl.placeCall(private final ITelecomService.Stub mBinderImpl = new ITelecomService.Stub())

三、Telecom Services：

TelecomServiceImpl.placeCall(mUserCallIntentProcessorFactory.create(mContext, userHandle).processIntent) → UserCallIntentProcessor.processIntent(processOutgoingCallIntent(sendIntentToDestination())) → PrimaryCallReceiver.onReceive() → CallIntentProcessor.processIntent(processOutgoingCallIntent(sendNewOutgoingCallIntent())) → NewOutgoingCallIntentBroadcaster.processIntent(broadcastIntent(Intent.ACTION_NEW_OUTGOING_CALL)) → this.NewOutgoingCallBroadcastIntentReceiver.onReceive(placeOutgoingCallImmediately()) → CallsManager.placeOutgoingCall(call.startCreateConnection) → Call.startCreateConnection(mCreateConnectionProcessor.process()) → CreateConnectionProcessor.process(attemptNextPhoneAccount(mService.createConnection(mCall, CreateConnectionProcessor.this))) → ConnectionServiceWrapper.createConnection(mBinder.bind(callback, call)) → ServiceBinder.Binder2.bind(ServiceConnection connection = new ServiceBinderConnection(call)) → ServiceBinderConnection.onServiceConnected()

1、onServiceConnected(setBinder(binder).setServiceInterface(binder)) → ConnectionServiceWrapper.setServiceInterface() → mServiceInterface = IConnectionService.Stub.asInterface(binder) 获取远程IConnectionService服务的aidl接口

2、onServiceConnected(handleSuccessfulConnection(callback.onSuccess())) → ConnectionServiceWrapper.createConnection(onSuccess(mServiceInterface.createConnection())) → ConnectionService.createConnection

备注：

1、NewOutgoingCallIntentBroadcaster.processIntent中主要对三种类型call的一些检查：普通call Intent.ACTION_CALL，系统call Intent.ACTION_CALL_PRIVILEGED，紧急呼叫call Intent.ACTION_CALL_EMERGENCY。最后调用broadcastIntent(intent, number, !callImmediately, targetUser);

2、从Call.startCreateConnection开始和来电的五是一样的流程

四、Telecom Frameworks：

ConnectionService.createConnection(mHandler.obtainMessage(MSG_CREATE_CONNECTION, args).sendToTarget()) → mHandler(case MSG_CREATE_CONNECTION(createConnection())) → onCreateOutgoingConnection(空实现，找子类) → TelephonyConnectionService.onCreateOutgoingConnection

备注：

1、ConnectionService.createConnection是protected IBinder mBinder = new IConnectionService.Stub()中实现的方法，之前mServiceInterface调用AIDL过来的。

五、Telephony Services：

TelephonyConnectionService.onCreateOutgoingConnection(placeOutgoingConnection(originalConnection = phone.dial())) → GsmCdmaPhone.dial()

备注：

1、onCreateOutgoingConnection里主要跟进getTelephonyConnection和placeOutgoingConnection，getTelephonyConnection很长，关键代码：final TelephonyConnection connection = createConnectionFor()通过getTelephonyConnection方法根据对于的pnone类型进行创建连接,并添加监听，获取到connection对象。

六、Telephony Frameworks：

GsmCdmaPhone.dial(dialInternal(mCT.dial(newDialString))) → GsmCdmaCallTracker.dial(mCi.dial(mPendingMO.getAddress(), clirMode, uusInfo, obtainCompleteMessage())) → RIL.dial(radioProxy.dial(rr.mSerial, dialInfo))

备注：

1、obtainCompleteMessage方法中调用到operationComplete()，mCi.getCurrentCalls(mLastRelevantPoll);什么的，用来查询当前call情况

七、RILD层：

IRadio.dial() → ril_service.cpp(dial)

八、Telecom Frameworks：

createConnection(handleCreateConnectionComplete) → IConnectionServiceAdapter.handleCreateConnectionComplete → ConnectionServiceWrapper.this.handleCreateConnectionComplete()

备注：

1、ConnectionServiceWrapper中实现了private final class Adapter extends IConnectionServiceAdapter.Stub

备注：

1、如同来电第七/八点，从去电第五点返回connection对象

九、Telecom Services：

ConnectionServiceWrapper.this.handleCreateConnectionComplete() → CreateConnectionProcessor.hanleCreateConnectionSuccess(mCallResponse.handleCreateConnectionSuccess(idMapper, connection)) → Call.onSuccessfulOutgoingCall(l.onSuccessfulOutgoingCall(this)) → CallsManager.onSuccessfulOutgoingCall() → setCallState() → listener.onCallStateChanged(call, oldState, newState) → IncallController.onCallStateChanged(updateCall(inCallService.updateCall(parcelableCall))) → IncallService.updateCall()

备注：

1、CallsManager.onSuccessfulOutgoingCall中setCallState()后markCallAsDialing(call)

十、Telecom Frameworks：

IncallService.updateCall() → Phone.internalUpdateCall() → Call.internalUpdate() → DialerCall(更新上层)