kaifyou Android 7.0 UICC 分析(四)

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本文講解SIMRecords

/frameworks/opt/telephony/src/java/com/android/internal/telephony/uicc/SIMRecords.java

構造方法：

    public SIMRecords(UiccCardApplication app, Context c, CommandsInterface ci) {        super(app, c, ci);        mAdnCache = new AdnRecordCache(mFh);        mVmConfig = new VoiceMailConstants();        mSpnOverride = new SpnOverride();        mCi.setOnSmsOnSim(this, EVENT_SMS_ON_SIM, null);//訊息註冊，當Ci接收到EVENT_SMS_ON_SIM訊息通知SIMRecords        mCi.registerForIccRefresh(this, EVENT_SIM_REFRESH, null);        // Start off by setting empty state        resetRecords();        mParentApp.registerForReady(this, EVENT_APP_READY, null);//當卡準備好，UiccCardApplication會通過notifyReadyRegistrantsifNeeded()通知SIMRecords        mParentApp.registerForLocked(this, EVENT_APP_LOCKED, null);//EVENT_APP_LOCKED訊息同樣處理        if (DBG) log("SIMRecords X ctor this=" + this);        IntentFilter intentfilter = new IntentFilter();        intentfilter.addAction(CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED);        c.registerReceiver(mReceiver, intentfilter); //接收ACTION_CARRIER_CONFIG_CHANGED訊息的處理    }

 

接收UiccCardApplication 的通知，訊息EVENT_APP_READY、EVENT_APP_LOCKED 的處理：

        try { switch (msg.what) {            case EVENT_APP_READY:                onReady();                break;            case EVENT_APP_LOCKED:                onLocked();                break;            }

onReady() 方法，直接調用fetchSimRecords()，到這裡開始載入EF檔案資訊:

具體的讀取SIM卡EF檔案資訊的過程是有IccFileHandler來實現的，根據EF檔案的類型，調用不同的方法loadEFTransparent()和loadEFLinearFixed()，最終都會調用RILJ 的iccIOForApp() 方法；

    protected void fetchSimRecords() {        if (DBG) log("fetchSimRecords " + mRecordsToLoad);        mCi.getIMSIForApp(mParentApp.getAid(), obtainMessage(EVENT_GET_IMSI_DONE));//擷取IMSI資訊，返回的資料在該類handleMessage()中處理        mRecordsToLoad++;　　//沒讀取一項資訊，計數值就加1        mFh.loadEFTransparent(EF_ICCID, obtainMessage(EVENT_GET_ICCID_DONE));//擷取ICCID        mRecordsToLoad++;        // Same goes for Call Forward Status indicator: fetch both        // EF[CFIS] and CPHS-EF, with EF[CFIS] preferred.        loadCallForwardingRecords();        getSpnFsm(true, null);        loadEfLiAndEfPl();        if (CRASH_RIL) {            String sms = "0107912160130310f20404d0110041007030208054832b0120"                         + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"                         + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"                         + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"                         + "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"                         + "ffffffffffffffffffffffffffffff";            byte[] ba = IccUtils.hexStringToBytes(sms);            mFh.updateEFLinearFixed(EF_SMS, 1, ba, null,                            obtainMessage(EVENT_MARK_SMS_READ_DONE, 1));        }        if (DBG) log("fetchSimRecords " + mRecordsToLoad + " requested: " + mRecordsRequested);    }

 

kaifyou Android 7.0 UICC 分析(四)