UICC(Universal Intergrated Circuit Card) 框架
* Following is class diagram for uicc classes:
*
* UiccController
* #
* |
* UiccCard
* # #
* | ------------------
* UiccCardApplication CatService
* # #
* | |
* IccRecords IccFileHandler
* ^ ^ ^ ^ ^ ^ ^ ^
* SIMRecords---- | | | | | | ---SIMFileHandler
* RuimRecords----- | | | | ----RuimFileHandler
* IsimUiccRecords--- | | -----UsimFileHandler
* | ------CsimFileHandler
* ----IsimFileHandler
UiccController 类与RILJ 交互，实质是一个Handler，当SIM卡状态发生变化UICCController就会更新。
其构造函数注册监听事件：
private UiccController(Context c, CommandsInterface []ci) {
if (DBG) log("Creating UiccController");
mContext = c;
mCis = ci;
for (int i = 0; i < mCis.length; i++) {
Integer index = new Integer(i);
mCis[i].registerForIccStatusChanged(this, EVENT_ICC_STATUS_CHANGED, index);
// TODO remove this once modem correctly notifies the unsols
if (DECRYPT_STATE.equals(SystemProperties.get("vold.decrypt"))) {
mCis[i].registerForAvailable(this, EVENT_ICC_STATUS_CHANGED, index);
} else {
mCis[i].registerForOn(this, EVENT_ICC_STATUS_CHANGED, index);
}
mCis[i].registerForNotAvailable(this, EVENT_RADIO_UNAVAILABLE, index);
mCis[i].registerForIccRefresh(this, EVENT_SIM_REFRESH, index);
}
}
CommandsInterface[] 数组对象的 i 对应的就是PhoneID；
EVENT_ICC_STATUS_CHANGED 监听SIM卡的状态变化；
当SIM卡状态变化，就有EVENT_ICC_STATUS_CHANGED 消息发出，此消息的处理如下：
public void handleMessage (Message msg) {
synchronized (mLock) {
Integer index = getCiIndex(msg);
if (index < 0 || index >= mCis.length) {
Rlog.e(LOG_TAG, "Invalid index : " + index + " received with event " + msg.what);
return;
}
AsyncResult ar = (AsyncResult)msg.obj;
switch (msg.what) {
case EVENT_ICC_STATUS_CHANGED:
if (DBG) log("Received EVENT_ICC_STATUS_CHANGED, calling getIccCardStatus");
mCis[index].getIccCardStatus(obtainMessage(EVENT_GET_ICC_STATUS_DONE, index));
break;
.............
default:
Rlog.e(LOG_TAG, " Unknown Event " + msg.what);
}
}
}
调用RILJ 的getIccCardStatus() 方法，参数是自定义的EVENT_GET_ICC_STATUS_DONE 消息Message对象，用于返回SIM卡状态信息；
生成RIL_REQUEST_GET_SIM_STATUS RILRequest 请求下发RILC 层，获取SIM 卡状态信息：
public void
getIccCardStatus(Message result) {
//Note: This RIL request has not been renamed to ICC,
// but this request is also valid for SIM and RUIM
RILRequest rr = RILRequest.obtain(RIL_REQUEST_GET_SIM_STATUS, result); if (RILJ_LOGD) riljLog(rr.serialString() + "> " + requestToString(rr.mRequest)); send(rr);
}
SIM 卡状态的信息通过 RILReceiver 类接收 RILC 层的返回，由ProcessSolicited() 方法处理；
case RIL_REQUEST_GET_SIM_STATUS: ret = responseIccCardStatus(p); break;
responseIccCardStatus() 方法返回IccCardStatus 对象，保存着SIM卡的状态信息，上报UiccController EVENT_GET_ICC_STATUS_DONE 消息：
case EVENT_GET_ICC_STATUS_DONE:
if (DBG) log("Received EVENT_GET_ICC_STATUS_DONE");
onGetIccCardStatusDone(ar, index);
break;
onGetIccCardStatusDone() 方法解析出IccCardStatue，如果没有SIM卡，则创建一个UiccCard，否则更新UiccCard 信息，一个UiccCard对象代表着一张SIM：
private synchronized void onGetIccCardStatusDone(AsyncResult ar, Integer index) {
......
IccCardStatus status = (IccCardStatus)ar.result;
if (mUiccCards[index] == null) {
//Create new card
mUiccCards[index] = new UiccCard(mContext, mCis[index], status, index);
} else {
//Update already existing card
mUiccCards[index].update(mContext, mCis[index] , status);
}
if (DBG) log("Notifying IccChangedRegistrants");
mIccChangedRegistrants.notifyRegistrants(new AsyncResult(null, index, null));
}
mIccChangedRigistrants 向监听者发出消息通知，监听者通过如下方法注册mIccChangedRigistrants ：
//Notifies when card status changes
public void registerForIccChanged(Handler h, int what, Object obj) {
synchronized (mLock) {
Registrant r = new Registrant (h, what, obj);
mIccChangedRegistrants.add(r);
//Notify registrant right after registering, so that it will get the latest ICC status,
//otherwise which may not happen until there is an actual change in ICC status.
r.notifyRegistrant();
}
}
监听者有如下：
IccCardProxy、GsmSMSDispactcher、CatService、Phone、ServiceStateTracker、DcTracker