Android 2.3发短信详细流程(4)

到这儿，"sendText()"这个字眼就没了，换成了另外一个方法名：sendRawPdu(),追踪这个方法可以发现它是SMSDispatcher.java的一个方法，这个类看着很眼熟吧？不错，在第四阶段我们已经和它打过交道了！我们来看看它的sendRawPdu到底是干嘛的：view plaincopy to clipboardprint?protected void sendRawPdu(byte[] smsc, byte[] pdu, PendingIntent sentIntent, 
            PendingIntent deliveryIntent) { 
           ...... 
           sendSms(tracker); 
           ..... 
 } 
protected void sendRawPdu(byte[] smsc, byte[] pdu, PendingIntent sentIntent,
            PendingIntent deliveryIntent) {
           ......
           sendSms(tracker);
           .....
 }又来了一个新方法名：sendSms(),从sendRawPdu()传来的信息经过封装传递给sendSms()方法进行处理，而在SMSDispatcher.java中，这个方法只是声明了一下，它的具体实现由子类：GsmSMSDispatcher.java完成。下面我们来看GsmSMSDispatcher.java
7. 第六阶段：GsmSMSDispatcher.java(frameworks/base/telephony/java/com/android/internal/telephony/gsm/GsmSMSDispatcher.java)

GsmSMSDispatcher.java的sendSms()方法核心代码如下：

view plaincopy to clipboardprint?protected CommandsInterface mCm; 
 
protected void sendSms(SmsTracker tracker) { 
        HashMap map = tracker.mData; 
 
        byte smsc[] = (byte[]) map.get("smsc"); 
        byte pdu[] = (byte[]) map.get("pdu"); 
 
        Message reply = obtainMessage(EVENT_SEND_SMS_COMPLETE, tracker); 
        mCm.sendSMS(IccUtils.bytesToHexString(smsc), 
                IccUtils.bytesToHexString(pdu), reply); 
    } 
protected CommandsInterface mCm;

protected void sendSms(SmsTracker tracker) {
        HashMap map = tracker.mData;

        byte smsc[] = (byte[]) map.get("smsc");
        byte pdu[] = (byte[]) map.get("pdu");

        Message reply = obtainMessage(EVENT_SEND_SMS_COMPLETE, tracker);