Android短信发送流程之长短信发送（原）
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Android短信发送流程之长短信发送（原）
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?從前面《
Android短信發送流程之普通短信發送
》流程看到，長短信與普通短信的流程從SmsManager的sendMultipartTextMessage()方法開始區分，現在我們來看長短信的流程：
[java]?view plaincopy @SmsManager.java?? public?void?sendMultipartTextMessage(?String?destinationAddress,?String?scAddress,?ArrayList<String>?parts,?ArrayList<PendingIntent>?sentIntents,?ArrayList<PendingIntent>?deliveryIntents)?{?? ????if?(TextUtils.isEmpty(destinationAddress))?{?? ????????throw?new?IllegalArgumentException("Invalid?destinationAddress");?? ????}?? ????if?(parts?==?null?||?parts.size()?<?1)?{?? ????????throw?new?IllegalArgumentException("Invalid?message?body");?? ????}?? ?? ?? ????if?(parts.size()?>?1)?{?? ????????//長短信發送?? ????????try?{?? ????????????ISms?iccISms?=?getISmsServiceOrThrow();?? ????????????iccISms.sendMultipartText(ActivityThread.currentPackageName(),?? ????????????????????destinationAddress,?scAddress,?parts,?? ????????????????????sentIntents,?deliveryIntents);?? ????????}?catch?(RemoteException?ex)?{?? ????????}?? ????}?else?{?? ????????//普通短信發送?? ????????PendingIntent?sentIntent?=?null;?? ????????PendingIntent?deliveryIntent?=?null;?? ????????if?(sentIntents?!=?null?&&?sentIntents.size()?>?0)?{?? ????????????sentIntent?=?sentIntents.get(0);?? ????????}?? ????????if?(deliveryIntents?!=?null?&&?deliveryIntents.size()?>?0)?{?? ????????????deliveryIntent?=?deliveryIntents.get(0);?? ????????}?? ????????sendTextMessage(destinationAddress,?scAddress,?parts.get(0),?sentIntent,?deliveryIntent);?? ????}?? }??
? ? ? ? 在上面的方法中，對于長短信將會通過iccISms對象也就是UiccSmsController的sendMultipartText()方法發送出去：
[java]?view plaincopy @UiccSmsController.java?? public?void?sendMultipartText(String?callingPackage,?String?destAddr,?String?scAddr,?List<String>?parts,?List<PendingIntent>?sentIntents,?List<PendingIntent>?deliveryIntents)?throws?android.os.RemoteException?{?? ????sendMultipartTextForSubscriber(getPreferredSmsSubscription(),?callingPackage,?destAddr,?scAddr,?parts,?sentIntents,?deliveryIntents);?? }?? public?void?sendMultipartTextForSubscriber(long?subId,?String?callingPackage,?String?destAddr,?String?scAddr,?List<String>?parts,?List<PendingIntent>?sentIntents,?List<PendingIntent>?deliveryIntents)?throws?android.os.RemoteException?{?? ????IccSmsInterfaceManager?iccSmsIntMgr?=?getIccSmsInterfaceManager(subId);?? ????if?(iccSmsIntMgr?!=?null?)?{?? ????????iccSmsIntMgr.sendMultipartText(callingPackage,?destAddr,?scAddr,?parts,?sentIntents,?? ????????????????deliveryIntents);?? ????}?else?{?? ????}?? }??
? ? ? ? 接下來UiccSmsController又把流程交給IccSmsInterfaceManager的sendMultipartText()來處理：
[java]?view plaincopy @IccSmsInterfaceManager.java?? public?void?sendMultipartText(String?callingPackage,?String?destAddr,?String?scAddr,?List<String>?parts,?List<PendingIntent>?sentIntents,?List<PendingIntent>?deliveryIntents)?{?? ????//權限檢查?? ????mPhone.getContext().enforceCallingPermission(?Manifest.permission.SEND_SMS,?"Sending?SMS?message");?? ????if?(mAppOps.noteOp(AppOpsManager.OP_SEND_SMS,?Binder.getCallingUid(),?callingPackage)?!=?AppOpsManager.MODE_ALLOWED)?{?? ????????return;?? ????}?? ?? ?? ????if?(parts.size()?>?1?&&?parts.size()?<?10?&&?!SmsMessage.hasEmsSupport())?{?? ????????//當前運營商不支持長短新，需要自行將短信分割后分別發送?? ????????for?(int?i?=?0;?i?<?parts.size();?i++)?{?? ????????????//?If?EMS?is?not?supported,?we?have?to?break?down?EMS?into?single?segment?SMS?? ????????????//?and?add?page?info?"?x/y".?? ????????????String?singlePart?=?parts.get(i);?? ????????????if?(SmsMessage.shouldAppendPageNumberAsPrefix())?{?? ????????????????singlePart?=?String.valueOf(i?+?1)?+?'/'?+?parts.size()?+?'?'?+?singlePart;?? ????????????}?else?{?? ????????????????singlePart?=?singlePart.concat('?'?+?String.valueOf(i?+?1)?+?'/'?+?parts.size());?? ????????????}?? ?? ?? ????????????PendingIntent?singleSentIntent?=?null;?? ????????????if?(sentIntents?!=?null?&&?sentIntents.size()?>?i)?{?? ????????????????singleSentIntent?=?sentIntents.get(i);?? ????????????}?? ?? ?? ????????????PendingIntent?singleDeliveryIntent?=?null;?? ????????????if?(deliveryIntents?!=?null?&&?deliveryIntents.size()?>?i)?{?? ????????????????singleDeliveryIntent?=?deliveryIntents.get(i);?? ????????????}?? ?? ?? ????????????//將長短信分割，挨個發送?? ????????????mDispatcher.sendText(destAddr,?scAddr,?singlePart,?? ????????????????????singleSentIntent,?singleDeliveryIntent,?? ????????????????????null/*messageUri*/,?callingPackage);?? ????????}?? ????????return;?? ????}?? ????//運營商支持長短信，直接發送即可?? ????mDispatcher.sendMultipartText(destAddr,?scAddr,?(ArrayList<String>)?parts,?? ????????????(ArrayList<PendingIntent>)?sentIntents,?(ArrayList<PendingIntent>)?deliveryIntents,?? ????????????null/*messageUri*/,?callingPackage);?? }??
? ? ? ? 從上面來看，對于長短信，
需要區分運營商是否支持的情況
，如果不支持，需要我們將短信分割后逐條發送，如果支持，需要走不同流程，由于逐條發送時的流程與普通短信發送流程相同，因此這里主要分析以下運營商支持長短信的情況，也就時sendMultipartText()的流程：
[java]?view plaincopy @ImsSMSDispatcher.java?? protected?void?sendMultipartText(String?destAddr,?String?scAddr,?? ????????ArrayList<String>?parts,?ArrayList<PendingIntent>?sentIntents,?? ????????ArrayList<PendingIntent>?deliveryIntents,?Uri?messageUri,?String?callingPkg)?{?? ????if?(isCdmaMo())?{?? ????????//CDMA?? ????????mCdmaDispatcher.sendMultipartText(destAddr,?scAddr,?? ????????????????parts,?sentIntents,?deliveryIntents,?messageUri,?callingPkg);?? ????}?else?{?? ????????//GSM?? ????????mGsmDispatcher.sendMultipartText(destAddr,?scAddr,?? ????????????????parts,?sentIntents,?deliveryIntents,?messageUri,?callingPkg);?? ????}?? }??
? ? ? ? 和普通短信類似，也許要區分當前的網絡環境，對于GSM來說，就是使用GsmSMSDispatcher來繼續處理，這個處理是在GsmSMSDispatcher父類SMSDispatcher中完成的：
[java]?view plaincopy @SMSDispatcher.java?? protected?void?sendMultipartText(String?destAddr,?String?scAddr,?ArrayList<String>?parts,?ArrayList<PendingIntent>?sentIntents,?ArrayList<PendingIntent>?deliveryIntents,?Uri?messageUri,?String?callingPkg)?{?? ????//將短信移入或寫入發件箱?? ????if?(messageUri?==?null)?{?? ????????if?(SmsApplication.shouldWriteMessageForPackage(callingPkg,?mContext))?{?? ????????????messageUri?=?writeOutboxMessage(?? ????????????????????getSubId(),?? ????????????????????destAddr,?? ????????????????????getMultipartMessageText(parts),?? ????????????????????deliveryIntents?!=?null?&&?deliveryIntents.size()?>?0,?? ????????????????????callingPkg);?? ????????}?? ????}?else?{?? ????????moveToOutbox(getSubId(),?messageUri,?callingPkg);?? ????}?? ????int?refNumber?=?getNextConcatenatedRef()?&?0x00FF;?? ????int?msgCount?=?parts.size();?? ????int?encoding?=?SmsConstants.ENCODING_UNKNOWN;?? ?? ?? ????TextEncodingDetails[]?encodingForParts?=?new?TextEncodingDetails[msgCount];?? ????for?(int?i?=?0;?i?<?msgCount;?i++)?{?? ????????TextEncodingDetails?details?=?calculateLength(parts.get(i),?false);?? ????????if?(encoding?!=?details.codeUnitSize?? ????????????????&&?(encoding?==?SmsConstants.ENCODING_UNKNOWN?? ????????????????????||?encoding?==?SmsConstants.ENCODING_7BIT))?{?? ????????????encoding?=?details.codeUnitSize;?? ????????????????????}?? ????????encodingForParts[i]?=?details;?? ????}?? ?? ?? ????//?States?to?track?at?the?message?level?(for?all?parts)?? ????final?AtomicInteger?unsentPartCount?=?new?AtomicInteger(msgCount);?? ????final?AtomicBoolean?anyPartFailed?=?new?AtomicBoolean(false);?? ?? ?? ????for?(int?i?=?0;?i?<?msgCount;?i++)?{?? ????????SmsHeader.ConcatRef?concatRef?=?new?SmsHeader.ConcatRef();?? ????????concatRef.refNumber?=?refNumber;?? ????????concatRef.seqNumber?=?i?+?1;??//?1-based?sequence?? ????????concatRef.msgCount?=?msgCount;?? ????????//?TODO:?We?currently?set?this?to?true?since?our?messaging?app?will?never?? ????????//?send?more?than?255?parts?(it?converts?the?message?to?MMS?well?before?that).?? ????????//?However,?we?should?support?3rd?party?messaging?apps?that?might?need?16-bit?? ????????//?references?? ????????//?Note:??It's?not?sufficient?to?just?flip?this?bit?to?true;?it?will?have?? ????????//?ripple?effects?(several?calculations?assume?8-bit?ref).?? ????????concatRef.isEightBits?=?true;?? ????????SmsHeader?smsHeader?=?new?SmsHeader();?? ????????smsHeader.concatRef?=?concatRef;?? ?? ?? ????????//?Set?the?national?language?tables?for?3GPP?7-bit?encoding,?if?enabled.?? ????????if?(encoding?==?SmsConstants.ENCODING_7BIT)?{?? ????????????smsHeader.languageTable?=?encodingForParts[i].languageTable;?? ????????????smsHeader.languageShiftTable?=?encodingForParts[i].languageShiftTable;?? ????????}?? ?? ?? ????????PendingIntent?sentIntent?=?null;?? ????????if?(sentIntents?!=?null?&&?sentIntents.size()?>?i)?{?? ????????????sentIntent?=?sentIntents.get(i);?? ????????}?? ?? ?? ????????PendingIntent?deliveryIntent?=?null;?? ????????if?(deliveryIntents?!=?null?&&?deliveryIntents.size()?>?i)?{?? ????????????deliveryIntent?=?deliveryIntents.get(i);?? ????????}?? ?? ?? ????????//逐條發送?? ????????sendNewSubmitPdu(destAddr,?scAddr,?parts.get(i),?smsHeader,?encoding,?? ????????????????sentIntent,?deliveryIntent,?(i?==?(msgCount?-?1)),?? ????????????????unsentPartCount,?anyPartFailed,?messageUri);?? ????}?? }??
? ? ? ? 在上面的過程中我們看到，對于運營商支持的長短信情況，
需要把拆分出來的短信分別加上短信頭編碼
，也就是SmsHeader，然后分別調用sendNewSubmitPdu()方法進行發送。
? ? ? ? 這里需要簡單介紹以下SmsHeader作用， 普通的短信中SmsHeader為空，所以只有長短信才會有該數據 。他內部確定了該長短信分組的大小、每個分組的索引、編碼格式等信息。
? ? ? ? 接下來看sendNewSubmitPdu()的過程，這個方法是在GsmSMSDispatcher中實現的： [java]?view plaincopy protected?void?sendNewSubmitPdu(String?destinationAddress,?String?scAddress,?String?message,?SmsHeader?smsHeader,?int?encoding,?PendingIntent?sentIntent,?PendingIntent?deliveryIntent,?boolean?lastPart,?AtomicInteger?unsentPartCount,?AtomicBoolean?anyPartFailed,?Uri?messageUri)?{?? ????//對短信內容進行編碼?? ????SmsMessage.SubmitPdu?pdu?=?SmsMessage.getSubmitPdu(scAddress,?destinationAddress,?? ????????????message,?deliveryIntent?!=?null,?SmsHeader.toByteArray(smsHeader),?? ????????????encoding,?smsHeader.languageTable,?smsHeader.languageShiftTable);?? ????if?(pdu?!=?null)?{?? ????????HashMap?map?=??getSmsTrackerMap(destinationAddress,?scAddress,?message,?pdu);?? ????????//發送?? ????????SmsTracker?tracker?=?getSmsTracker(map,?sentIntent,?? ????????????????deliveryIntent,?getFormat(),?unsentPartCount,?anyPartFailed,?messageUri,?? ????????????????smsHeader,?!lastPart);?? ????????sendRawPdu(tracker);?? ????}?else?{?? ????????Rlog.e(TAG,?"GsmSMSDispatcher.sendNewSubmitPdu():?getSubmitPdu()?returned?null");?? ????}?? }??
? ? ? ? 接下來的流程和普通短信一樣，最終通過RILJ將短信發送出去，并且注冊回調消息為EVENT_SEND_SMS_COMPLETE。
? ? ? ? 也就是說， 對于長短信而言，如果運營商不支持，那么就拆分為一個個普通短信然后逐條發送，如果運營商支持長短信，則會對每個分組短信添加SmsHeader的信息頭，然后逐條發送。
? ? ? ? 這里需要簡單介紹以下SmsHeader作用， 普通的短信中SmsHeader為空，所以只有長短信才會有該數據 。他內部確定了該長短信分組的大小、每個分組的索引、編碼格式等信息。
? ? ? ? 接下來看sendNewSubmitPdu()的過程，這個方法是在GsmSMSDispatcher中實現的： [java]?view plaincopy
? ? ? ? 也就是說， 對于長短信而言，如果運營商不支持，那么就拆分為一個個普通短信然后逐條發送，如果運營商支持長短信，則會對每個分組短信添加SmsHeader的信息頭，然后逐條發送。
? ? ? ? 所以當SMSDispatcher接收到EVENT_SEND_SMS_COMPLETE消息時，就說明，無論是普通短信或者長短信，都已經發送完畢。
? ? ? ? 以上就是長短信的發送流程。
? ? ? ??多收件人的情況，請見下節介紹。
Source:?http://blog.csdn.net/u010961631/article/details/50272729
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