Android RIL源碼分析（3）

第三部分, 流程分析

1．Outgoing Call流程。

v
TwelveKeyDialer.java

|_onKeyUp()

|_placeCall()

v
OutgoingCallBroadcaster.java,

|_onCreate()

|_sendOrderedBroadcast(broadcastIntent, PERMISSION,

new OutgoingCallReceiver(), null, Activity.RESULT_OK, number,null);

|_ OutgoingCallReceiver

|_onReceive()

|_ doReceive()

|_context.startActivity(newIntent);

v
InCallScreen.java

|_ onCreate()

|_onNewIntent()

|_placeCall()

v
PhoneUtils.java

|_placeCall()

v
GSMPhone.java,

|_dial()

v
GsmCallTracker.java,

|_dial()

v
RIL.java

|_dial()

|_
RILRequest rr = RILRequest.obtain(RIL_REQUEST_DIAL, result);

|...

|send(rr);

2.
Incoming Call的流程：

v
創建GsmPhone時，mCT = new GsmCallTracker(this);

v
創建GsmCallTracker時:

Ø
cm.registerForCallStateChanged(this, EVENT_CALL_STATE_CHANGE,null);

Ø
mCallStateRegistrants.add(r);

v
RIL中的RILReceiver線程首先讀取從rild中傳來的數據：

Ø
processResponse()

Ø
processUnsolicited()

v
對應於incoming call,RIL收到RIL_UNSOL_RESPONSE_CALL_STATE_CHANGED消息，觸發mCallStateRegistrants中的所有記錄。

v
GsmCallTracker處理EVENT_CALL_STATE_CHANGE，調用pollCallsWhenSafe

v
函數pllCallsWhenSafe 處理：

§
lastRelevantPoll = obtainMessage(EVENT_POLL_CALLS_RESULT);

§
cm.getCurrentCalls(lastRelevantPoll);

v
RIL::getCurrentCalls

§
RILRequestrr = RILRequest.obtain(RIL_REQUEST_GET_CURRENT_CALLS,result);

§
...

§
send(rr);

v
接着RIL調用processSolicited處理RIL_REQUEST_GET_CURRENT_CALLS的返回結果

v
GsmCallTracker的handleMessage被觸發，處理事件EVENT_POLL_CALLS_RESULT,調用函數 handlePollCalls

v
handlPollCalls 調用phone.notifyNewRingingConnection(newRinging);

v
PhoneApp中創建CallNotifier

v
CallNotifier註冊：

§
registerForNewRingingConnection ->mNewRingingConnectionRegistrants.addUnique(h, what, obj);