关于sms center number 中心默认号码是如何设置的，一个硕大的问号.

刚入门的菜鸟，android 4.4 不知道短信中心的号码默认值是如何设置的

首先我找到了将短信中心号码设置到控件上显示的地方：

文件名：SimSettingPreferenceActivity.java

    @Override    protected void onCreate(Bundle icicle) {        super.onCreate(icicle);        mPhoneId = this.getIntent().getIntExtra(Phone.PHONE_ID, TelephonyManager.getDefaultPhoneId());        mTelephonyManager = MmsApp.getApplication().getTelephonyManager(mPhoneId);        if (MessageUtils.OS_DEBUG) {        Log.d(TAG, "onCreate() -->> Start activity for phoneId = " + mPhoneId);        }        addPreferencesFromResource(R.xml.setting_sim_preferences);        createResource();        ActionBar actionBar = getActionBar();        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE                | ActionBar.DISPLAY_HOME_AS_UP);        setMessagePreferences();        //modify for Bug 620828 begin        mSoftKeyPanel=new SoftKeyPanel(this);        mSoftKeyPanel.setCaption(null,getString(R.string.menu_select), getString(R.string.menu_back));        //modify for Bug 620828 end

    private void createResource() {        mManageSimPref = findPreference("pref_key_manage_sim_messages");        mSmsDeliveryReportPref = (CheckBoxPreference) findPreference("pref_key_sms_delivery_reports");        mStoreSmsOnSim = (CheckBoxPreference) findPreference("pref_key_store_sms_on_sim");        mMmsDeliveryReportPref = (CheckBoxPreference)findPreference("pref_key_mms_delivery_reports");        mMmsReadReportPref = (CheckBoxPreference)findPreference("pref_key_mms_read_reports");        mSmscPref = findPreference("pref_key_sim_smsc");        mMmsAutoCheckPref = (CheckBoxPreference)findPreference("pref_key_mms_auto_retrieval");        mMmsDuringPref = (CheckBoxPreference)findPreference("pref_key_mms_retrieval_during_roaming");        mMmsValidityPref = (ListPreference)findPreference("pref_key_mms_validity_input_sim");        mMmsValidityPref.setOnPreferenceChangeListener(this);        mSmsValidityPref = (ListPreference)findPreference("pref_key_sms_validity");        mSmsValidityPref.setOnPreferenceChangeListener(this);        mMmsPriorityPref = (ListPreference)findPreference("pref_key_mms_priority");        mMmsPriorityPref.setOnPreferenceChangeListener(this);    }

 private void setMessagePreferences() {..........................        if (isMultiSim && isValidPhoneId(mPhoneId)) {            mSmscPref.setTitle(getString(R.string.pref_title_manage_simx_smsc, mPhoneId+1));            mSmscPref.setSummary(getSmscString(mPhoneId));        } else {            mSmscPref.setSummary(getSmscString(-1));        }.......................}

    private String getSmscString(int phoneId) {        String smscStr = "";        // SPRD: Modify for bug261680 @{        TelephonyManager telephonyManager;        if (phoneId == -1) {            telephonyManager = MmsApp.getApplication().getTelephonyManager();        } else {            telephonyManager = MmsApp.getApplication().getTelephonyManager(phoneId);        }        if (!mSupportOrange) {            smscStr = telephonyManager.getSmsc();  //短信中心号码默认获取处            if ((smscStr == null || smscStr.equals("") || smscStr.equals("refresh error"))                    && isCMCCSim(phoneId)) {                smscStr = CMCC_DEFAULT_SMSC;            }        }else{            SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(SimSettingPreferenceActivity.this);            if (TelephonyManager.isMultiSim()) {                smscStr = sharedPreferences.getString(                        SimSettingPreferenceActivity.SMS_CENTER_ACTIVATED_STR_SIMX[phoneId], "");            } else {                smscStr = sharedPreferences.getString(                                SimSettingPreferenceActivity.SMS_CENTER_ACTIVATED_STR, "");            }        }        // @}        return smscStr;    }

在TelephonyManager.java中：

    public String getSmsc() {        try {            return getISprdTelephony().getSmsc(); //getISprdTelephony 方法返回的是一个ISprdTelephony.aidl服务，实现getISprdTelephony.aidl的类是：SprdPhoneInterfaceManger.java        } catch (RemoteException ex) {            return null;        } catch (NullPointerException ex) {            return null;        }    }

在SprdPhoneInterfaceManager.java中真正去获得Smsc：

    public String getSmsc() {        enforceModifyPermission();        final GetSetSMSC getSMSC = new GetSetSMSC(mPhone, null);        getSMSC.start();        return getSMSC.getSmsc();    }    public boolean setSmsc(String smscAddr) {        enforceModifyPermission();        final GetSetSMSC getSMSC = new GetSetSMSC(mPhone, smscAddr);        getSMSC.start();        return getSMSC.setSmsc();    }

    private static class GetSetSMSC extends Thread {        private final Phone mPhone;        private final String mSmscStr;        private boolean mDone = false;        private String mResult;        private boolean bResult = false;        private Handler mHandler;        // For async handler to identify request type        private static final int QUERY_SMSC_DONE = 100;        private static final int UPDATE_SMSC_DONE = 101;        public GetSetSMSC(Phone phone, String SmscStr) {            mPhone = phone;            mSmscStr = SmscStr;        }        @Override        public void run() {            Looper.prepare();            synchronized (GetSetSMSC.this) {                mHandler = new Handler() {                    @Override                    public void handleMessage(Message msg) {                        AsyncResult ar = (AsyncResult) msg.obj;                        switch (msg.what) {                            case QUERY_SMSC_DONE:                                Log.d(LOG_TAG, "[smsc]QUERY_SMSC_DONE");                                synchronized (GetSetSMSC.this) {                                    if (ar.exception == null) {                                        mResult = (String)ar.result;                                    } else {                                        mResult = "refresh error";                                    }                                    mDone = true;                                    GetSetSMSC.this.notifyAll();                                }                                getLooper().quit();                                break;                            case UPDATE_SMSC_DONE:                                Log.d(LOG_TAG, "[smsc]UPDATE_SMSC_DONE");                                synchronized (GetSetSMSC.this) {                                    bResult = (ar.exception == null);                                    mDone = true;                                    GetSetSMSC.this.notifyAll();                                }                                getLooper().quit();                                break;                        }                    }                };                GetSetSMSC.this.notifyAll();            }            Looper.loop();        }        synchronized String getSmsc() {            while (mHandler == null) {                try {                    wait();                } catch (InterruptedException e) {                    Thread.currentThread().interrupt();                }            }            mPhone.getSmscAddress(mHandler.obtainMessage(QUERY_SMSC_DONE));            while (!mDone) {                try {                    Log.d(LOG_TAG, "[smsc]wait get for done");                    wait();                } catch (InterruptedException e) {                    // Restore the interrupted status                    Thread.currentThread().interrupt();                }            }            Log.d(LOG_TAG, "[smsc]get done");            return mResult;        }        synchronized boolean setSmsc() {            while (mHandler == null) {                try {                    wait();                } catch (InterruptedException e) {                    Thread.currentThread().interrupt();                }            }            mPhone.setSmscAddress(mSmscStr, mHandler.obtainMessage(UPDATE_SMSC_DONE));            while (!mDone) {                try {                    Log.d(LOG_TAG, "[smsc]wait set for done");                    wait();                } catch (InterruptedException e) {                    // Restore the interrupted status                    Thread.currentThread().interrupt();                }            }            Log.d(LOG_TAG, "[smsc]set done. result = "+bResult);            return bResult;        }    }

最后走到这里就没思路了，按我的思路应该是在开机初始化的时候，系统会默认setSmsAddress()设置一个地址最后通知UPDATE_SMSC_DONE，

最后到RIL那边发送.最后就可以在getSmsc()中getSmscAddress(mHandler.obtainMessage(QUERY_SMSC_DONE))中获取一个String类型的mResult。

可是代码全局搜索setSmscAddress没有找到相关紧要的设置项，是从SIM卡中自动获取的？？？还是我的思路不对呢？

不过最后问了同事，短信中心号码不要改，改了可能会出问题，客户需求不靠谱啊，关键我自己想知道结果是哪里给的值。