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      Android mms 發(fā)送流程

       jemeen 2012-03-30

      MMS發(fā)送流程
      Android2.2packages/apps/Mms

      1.      點擊發(fā)送按鈕Src/com/android/mms/ui/ComposeMessageActivity.java

      public void onClick(View v) {

              if ((v == mSendButton) && isPreparedForSending()) {

                  confirmSendMessageIfNeeded(); //確認(rèn)是否需要發(fā)送短信—-》

              }

      }

       

      2.src/com/android/mms/ui/ComposeMessageActivity.java

      private void confirmSendMessageIfNeeded() {

              if (!isRecipientsEditorVisible()) {  //編輯聯(lián)系人不可見時,也就是給已存在會話的聯(lián)系人發(fā)送短信時

                  sendMessage(true);

                  return;

              }

       

              boolean isMms = mWorkingMessage.requiresMms();   //是否需要以彩信形式發(fā)送

                      if (mRecipientsEditor.hasInvalidRecipient(isMms)) {//是否含有不合法的收件人

                  if (mRecipientsEditor.hasValidRecipient(isMms)) {//有合法的和不合法的,彈出嘗試發(fā)送對話框

                      String title = getResourcesString(R.string.has_invalid_recipient,

                              mRecipientsEditor.formatInvalidNumbers(isMms));

                      new AlertDialog.Builder(this)

                         .setIcon(android.R.drawable.ic_dialog_alert)

                          .setTitle(title)

                          .setMessage(R.string.invalid_recipient_message)

                         .setPositiveButton(R.string.try_to_send,

                                  newSendIgnoreInvalidRecipientListener())

                         .setNegativeButton(R.string.no, new CancelSendingListener())

                          .show();

                  } else {//如果全是不合法的聯(lián)系人,提示不能發(fā)送信息

                      new AlertDialog.Builder(this)

                         .setIcon(android.R.drawable.ic_dialog_alert)

                          .setTitle(R.string.cannot_send_message)

                          .setMessage(R.string.cannot_send_message_reason)

                         .setPositiveButton(R.string.yes, new CancelSendingListener())

                          .show();

                  }

              } else {//判斷收件人沒有問題,接著發(fā)送信息 --》

                  sendMessage(true);

              }

      }

       

      3. src/com/android/mms/ui/ComposeMessageActivity.java

      private void sendMessage(boolean bCheckEcmMode) {

          Log.v(TAG, "sendMessage");

              if (bCheckEcmMode) {

                  // TODO: expose this in telephony layer for SDK build

                  String inEcm = SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE);     //判斷電話是否處于緊急撥號模式,得到的inEcm一般為空

                  Log.v(TAG, "inEcm = " + inEcm);

                  if (Boolean.parseBoolean(inEcm)) {

                      try {

                          startActivityForResult(

                                  new Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS,null),

                                  REQUEST_CODE_ECM_EXIT_DIALOG);

                          return;

                      } catch (ActivityNotFoundException e) {

                          // continue to send message

                          Log.e(TAG, "Cannot find EmergencyCallbackModeExitDialog", e);

                      }

                  }

              }

       

              if (!mSendingMessage) {

                  // send can change the recipients. Make sure we remove the listeners firstand then add

                  // them back once the recipient list has settled.

                  removeRecipientsListeners();  //取消對收件人的監(jiān)聽

                  mWorkingMessage.send();   //發(fā)送信息—-》

                  mSentMessage = true;

                  mSendingMessage = true;

                  addRecipientsListeners(); //重新添加收件人監(jiān)聽

              }

              // But bail out if we are supposed to exit after the message is sent.

              if (mExitOnSent) {//如果mExitOnSent為true,信息發(fā)送完成后退出Activity

                  finish();

              }

          }

       

      4. src/com/android/mms/data/WorkingMessage.java

      /**

           * Send this message over the network.  Will call back with onMessageSent() once

           * it has been dispatched to the telephonystack.  This WorkingMessage object is

           * no longer useful after this method hasbeen called.

           */

          public void send() {

              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                  LogTag.debug("send");

              }

       

              // Get ready to write to disk.

              prepareForSave(true /* notify */);//主要做一下同步收件人和WorkingMessage,彩信時在準(zhǔn)備其他一些東西

       

              // We need the recipient list for both SMS and MMS.

              final Conversation conv = mConversation;

              String msgTxt = mText.toString();

              Log.v(TAG, "msgText = " + msgTxt);

              if (requiresMms()|| addressContainsEmailToMms(conv, msgTxt)) {

                  // Make local copies of the bits we need for sending a message,

                  // because we will be doing it off of the main thread, which will

                  // immediately continue on to resetting some of this state.

                  final Uri mmsUri = mMessageUri;   //如果第一次發(fā)送,此時mmsUri為null,如果是重發(fā),則是草稿箱的地址 mMessageUri =content://mms/drafts/1

                  final PduPersister persister = PduPersister.getPduPersister(mContext);

       

                  final SlideshowModel slideshow = mSlideshow;

                  final SendReq sendReq = makeSendReq(conv,mSubject);

       

                  // Do the dirty work of sending the message off of the main UI thread.

                  new Thread(new Runnable() {

                      public void run() {

                          // Make sure the text in slide 0 is no longer holding onto a reference to

                          // the text in the message text box.

                          slideshow.prepareForSend();

                          sendMmsWorker(conv, mmsUri, persister, slideshow, sendReq);

                      }

                  }).start();

              }else {

                  // Same rules apply as above.

                  final String msgText = mText.toString();//取出短消息

                  Log.v(TAG, "msgText = " + msgText);

                  new Thread(new Runnable() {

                      public void run() {

                          preSendSmsWorker(conv, msgText);//發(fā)送信息--》

                      }

                  }).start();

              }

       

              // update the Recipient cache with the new to address, if it's different

              RecipientIdCache.updateNumbers(conv.getThreadId(),conv.getRecipients());

       

              // Mark the message as discarded because it is "off the market"after being sent.

              mDiscarded = true;

          }

       

      5. src/com/android/mms/data/WorkingMessage.java

      private void sendMmsWorker(Conversation conv, Uri mmsUri, PduPersisterpersister, SlideshowModel slideshow, SendReq sendReq) {

          Log.v(TAG, "sendMmsWorker");

              // If user tries to send the message, it's a signal the inputtedtext is what they wanted.

              UserHappinessSignals.userAcceptedImeText(mContext);

       

              // First make sure we don't have too many outstanding unsent message.

              Cursor cursor = null;

              try {

                  cursor = SqliteWrapper.query(mContext, mContentResolver,

                          Mms.Outbox.CONTENT_URI,MMS_OUTBOX_PROJECTION, null, null, null);

                  if (cursor != null) {//如果MMS_OUTBOX里有未發(fā)送的彩信,并且總的大小已經(jīng)超過了彩信的最大限制,則取消此次發(fā)送,并存入草稿箱

                    Log.v(TAG, "query Mms.Outbox.CONTENT_URI is not empty");

                      long maxMessageSize = MmsConfig.getMaxSizeScaleForPendingMmsAllowed()*

                          MmsConfig.getMaxMessageSize();

                      Log.v(TAG, "MmsConfig.getMaxSizeScaleForPendingMmsAllowed() =" + MmsConfig.getMaxSizeScaleForPendingMmsAllowed());

                      Log.v(TAG, "MmsConfig.getMaxMessageSize()() = " + MmsConfig.getMaxMessageSize());

                     

                      long totalPendingSize = 0;

                      while (cursor.moveToNext()) {

                          totalPendingSize +=cursor.getLong(MMS_MESSAGE_SIZE_INDEX);

                          Log.v(TAG, "totalPendingSize = " + totalPendingSize);

                      }

                      if (totalPendingSize >= maxMessageSize) {

                          unDiscard();    // itwasn't successfully sent. Allow it to be saved as a draft.

                          mStatusListener.onMaxPendingMessagesReached();

                          return;

                      }

                  }else{

                    Log.v(TAG, "query Mms.Outbox.CONTENT_URI is empty");

                  }

              } finally {

                  if (cursor != null) {

                      cursor.close();

                  }

              }

              mStatusListener.onPreMessageSent();

       

              // Make sure we are still using the correct thread ID for our

              // recipient set.

              long threadId = conv.ensureThreadId();

       

              if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {

                  LogTag.debug("sendMmsWorker: update draft MMS message " + mmsUri);

              }

       

              if (mmsUri == null) {//如果是首次發(fā)送,先把彩信保存入草稿箱

                  // Create a new MMS message if one hasn't been made yet.

              Log.v(TAG, "mmsUri == null and startcreateDraftMmsMessage");

                  mmsUri = createDraftMmsMessage(persister,sendReq, slideshow);

              } else {

                  // Otherwise, sync the MMS message in progress to disk.

              Log.v(TAG, "mmsUri = " + mmsUri);

              Log.v(TAG, "updateDraftMmsMessage");

                  updateDraftMmsMessage(mmsUri,persister, slideshow, sendReq);

              }

       

              // Be paranoid and clean any draft SMS up.

              deleteDraftSmsMessage(threadId);

       

              // Resize all the resizeable attachments (e.g. pictures) to fit

              // in the remaining space in the slideshow.

              int error = 0;

              try {

                  slideshow.finalResize(mmsUri);

              } catch (ExceedMessageSizeException e1) {

                  error = MESSAGE_SIZE_EXCEEDED;

              } catch (MmsException e1) {

                  error = UNKNOWN_ERROR;

              }

              if (error != 0) {

                  markMmsMessageWithError(mmsUri);

                  mStatusListener.onAttachmentError(error);

                  return;

              }

       

              MessageSender sender = new MmsMessageSender(mContext, mmsUri,

                     slideshow.getCurrentMessageSize());

              try {

                  if (!sender.sendMessage(threadId)) {

                      // The message was sent through SMS protocol, we should

                      // delete the copy which was previously saved in MMS drafts.

                      SqliteWrapper.delete(mContext, mContentResolver, mmsUri, null, null);

                  }

       

                  // Make sure this thread isn't over the limits in message count

                  Recycler.getMmsRecycler().deleteOldMessagesByThreadId(mContext, threadId);

              } catch (Exception e) {

                  Log.e(TAG, "Failed to send message: " + mmsUri + ",threadId=" + threadId, e);

              }

       

              mStatusListener.onMessageSent();

      }

       

      6.src/com/android/mms/transaction/MmsMessageSender.java

      public boolean sendMessage(long token) throws MmsException {

              // Load the MMS from the message uri

              PduPersister p = PduPersister.getPduPersister(mContext);

              GenericPdu pdu = p.load(mMessageUri);

       

              if (pdu.getMessageType() != PduHeaders.MESSAGE_TYPE_SEND_REQ){

                  throw new MmsException("Invalid message: " +pdu.getMessageType());

              }

       

              SendReq sendReq = (SendReq)pdu;

       

              // Update headers.

              updatePreferencesHeaders(sendReq);

       

              // MessageClass.

              sendReq.setMessageClass(DEFAULT_MESSAGE_CLASS.getBytes());

       

              // Update the 'date' field of the message before sending it.

              sendReq.setDate(System.currentTimeMillis()/ 1000L);

             

              sendReq.setMessageSize(mMessageSize);

       

              p.updateHeaders(mMessageUri, sendReq);

       

              // Move the message into MMS Outbox

              p.move(mMessageUri, Mms.Outbox.CONTENT_URI);

       

              // Start MMS transaction service

              SendingProgressTokenManager.put(ContentUris.parseId(mMessageUri), token);

              mContext.startService(new Intent(mContext, TransactionService.class));

       

              return true;

          }

       

      7.src/com/android/mms/transaction/TransactionService.java

      @Override

          public int onStartCommand(Intent intent, int flags, int startId) {

          Log.v(TAG, "onStartCommand");

              if (intent == null) {

                  return Service.START_NOT_STICKY;

              }

              mConnMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

              boolean noNetwork =!isNetworkAvailable();

       

              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                  Log.v(TAG, "onStart: #" + startId + ": " + intent.getExtras() + " intent=" + intent);

                  Log.v(TAG, "   networkAvailable=" + !noNetwork);

              }

              Log.v(TAG, "getAction is " + intent.getAction());

              if (ACTION_ONALARM.equals(intent.getAction())|| (intent.getExtras() == null)) {

              Log.v(TAG, "ACTION_ONALARM.equals(intent.getAction()) ||(intent.getExtras() == null)");

                  // Scan database to find all pending operations.

                  Cursor cursor = PduPersister.getPduPersister(this).getPendingMessages(

                          System.currentTimeMillis());

                  if (cursor != null) {

                      try {

                          int count = cursor.getCount();

       

                          if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                              Log.v(TAG, "onStart: cursor.count=" + count);

                          }

       

                          if (count == 0) {

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "onStart: no pending messages. Stoppingservice.");

                              }

                              RetryScheduler.setRetryAlarm(this);

                             stopSelfIfIdle(startId);

                              return Service.START_NOT_STICKY;

                          }

       

                          int columnIndexOfMsgId =cursor.getColumnIndexOrThrow(PendingMessages.MSG_ID);

                          int columnIndexOfMsgType =cursor.getColumnIndexOrThrow(

                                  PendingMessages.MSG_TYPE);

       

                          if (noNetwork) {

                              // Make sure we register for connection state changes.

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "onStart: registerForConnectionStateChanges");

                              }

                              MmsSystemEventReceiver.registerForConnectionStateChanges(

                                     getApplicationContext());

                          }

       

                          while (cursor.moveToNext()) {

                              int msgType =cursor.getInt(columnIndexOfMsgType);

                              int transactionType =getTransactionType(msgType);

                              Log.v(TAG, "msgType = " + msgType);

                              Log.v(TAG, "transactionType = " + transactionType);

                              if (noNetwork) {

                                 onNetworkUnavailable(startId, transactionType);

                                  return Service.START_NOT_STICKY;

                              }

                             

                              switch (transactionType){

                                  case -1:

                                      break;

                                  case Transaction.RETRIEVE_TRANSACTION:

                                      // If it's a transiently failed transaction,

                                      // we should retry it in spite of current

                                      // downloading mode.

                                      int failureType =cursor.getInt(

                                             cursor.getColumnIndexOrThrow(

                                                     PendingMessages.ERROR_TYPE));

                                      if (!isTransientFailure(failureType)){

                                          break;

                                      }

                                      // fall-through

                                  default:

                                      Uri uri =ContentUris.withAppendedId(

                                              Mms.CONTENT_URI,

                                             cursor.getLong(columnIndexOfMsgId));

                                     TransactionBundle args = new TransactionBundle(

                                             transactionType, uri.toString());

                                      // FIXME: We use the same startId for all MMs.

                                      launchTransaction(startId, args, false);

                                      break;

                              }

                          }

                      } finally {

                          cursor.close();

                      }

                  } else {

                      if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                          Log.v(TAG, "onStart: no pending messages. Stoppingservice.");

                      }

                      RetryScheduler.setRetryAlarm(this);

                      stopSelfIfIdle(startId);

                  }

              } else {

                  if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                      Log.v(TAG, "onStart: launch transaction...");

                  }

                  // For launching NotificationTransaction and test purpose.

                  TransactionBundle args = newTransactionBundle(intent.getExtras());

                  launchTransaction(startId, args,noNetwork);

              }

              return Service.START_NOT_STICKY;

          }

       

      8. src/com/android/mms/transaction/TransactionService.java

      private void launchTransaction(int serviceId,TransactionBundle txnBundle, boolean noNetwork) {

          Log.v(TAG, "launchTransaction");

              if (noNetwork) {

                  Log.w(TAG, "launchTransaction: no network error!");

                  onNetworkUnavailable(serviceId,txnBundle.getTransactionType());

                  return;

              }

              Message msg = mServiceHandler.obtainMessage(EVENT_TRANSACTION_REQUEST);

              msg.arg1 = serviceId;

              msg.obj = txnBundle;

       

              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                  Log.v(TAG, "launchTransaction: sending message " + msg);

              }

              mServiceHandler.sendMessage(msg);

          }

       

      9. src/com/android/mms/transaction/TransactionService.java

      private final class ServiceHandler extends Handler {

              public ServiceHandler(Looper looper) {

                  super(looper);

              }

       

              /**

               * Handle incoming transactionrequests.

               * The incoming requests are initiatedby the MMSC Server or by the

               * MMS Client itself.

               */

              @Override

              public void handleMessage(Messagemsg) {

                  if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                      Log.v(TAG, "Handling incoming message: " + msg);

                  }

       

                  Transaction transaction = null;

       

                  switch (msg.what) {

                      case EVENT_QUIT:

                          getLooper().quit();

                          return;

       

                      case EVENT_CONTINUE_MMS_CONNECTIVITY:

                          synchronized (mProcessing) {

                              if (mProcessing.isEmpty()) {

                                  return;

                              }

                          }

       

                          if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                              Log.v(TAG, "handle EVENT_CONTINUE_MMS_CONNECTIVITYevent...");

                          }

       

                          try {

                              int result =beginMmsConnectivity();

                              if (result != Phone.APN_ALREADY_ACTIVE){

                                  Log.v(TAG, "Extending MMS connectivity returned " + result +

                                          " instead of APN_ALREADY_ACTIVE");

                                  // Just wait for connectivity startup without

                                  // any newrequest of APN switch.

                                  return;

                              }

                          } catch (IOException e) {

                              Log.w(TAG, "Attempt to extend use of MMS connectivityfailed");

                              return;

                          }

       

                          // Restart timer

                         sendMessageDelayed(obtainMessage(EVENT_CONTINUE_MMS_CONNECTIVITY),

                                             APN_EXTENSION_WAIT);

                          return;

       

                      case EVENT_DATA_STATE_CHANGED:

                          /*

                           * If we are being informedthat connectivity has been established

                           * to allow MMS traffic,then proceed with processing the pending

                           * transaction, if any.

                           */

                          if (mConnectivityListener == null) {

                              return;

                          }

       

                          NetworkInfo info = mConnectivityListener.getNetworkInfo();

                          if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                              Log.v(TAG, "Handle DATA_STATE_CHANGED event: " + info);

                          }

       

                          // Check availability of the mobile network.

                          if ((info == null) || (info.getType() !=

                                 ConnectivityManager.TYPE_MOBILE_MMS)) {

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "   type isnot TYPE_MOBILE_MMS, bail");

                              }

                              return;

                          }

       

                          if (!info.isConnected()) {

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "  TYPE_MOBILE_MMS not connected, bail");

                              }

                              return;

                          }

       

                          TransactionSettings settings = newTransactionSettings(

                                  TransactionService.this,info.getExtraInfo());

       

                          // If this APN doesn't have an MMSC, wait for one that does.

                          if (TextUtils.isEmpty(settings.getMmscUrl())){

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "   empty MMSCurl, bail");

                              }

                              return;

                          }

       

                          // Set a timer to keep renewing our "lease" on the MMSconnection

                         sendMessageDelayed(obtainMessage(EVENT_CONTINUE_MMS_CONNECTIVITY),

                                             APN_EXTENSION_WAIT);

                         processPendingTransaction(transaction, settings);

                          return;

       

                      case EVENT_TRANSACTION_REQUEST://響應(yīng)請求

                        Log.v(TAG, "EVENT_TRANSACTION_REQUEST");

                          int serviceId = msg.arg1;

                          try {

                              TransactionBundle args= (TransactionBundle) msg.obj;

                              TransactionSettingstransactionSettings;

       

                              // Set the connection settings for this transaction.

                              // If these have not been set in args, load thedefault settings.

                              String mmsc =args.getMmscUrl();

                              if (mmsc != null) {

                                  transactionSettings= new TransactionSettings(

                                          mmsc,args.getProxyAddress(), args.getProxyPort());

                              } else {

                                  transactionSettings= new TransactionSettings(

                                                         TransactionService.this, null);

                              }

       

                              int transactionType =args.getTransactionType();

                              Log.v(TAG, "transactionType = " + transactionType);

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "handle EVENT_TRANSACTION_REQUEST:transactionType=" +

                                         transactionType);

                              }

       

                              // Create appropriate transaction

                              switch (transactionType){

                                  case Transaction.NOTIFICATION_TRANSACTION:

                                      String uri =args.getUri();

                                      if (uri != null) {

                                          transaction= new NotificationTransaction(

                                                 TransactionService.this, serviceId,

                                                 transactionSettings, uri);

                                      } else {

                                          // Now it's only used for test purpose.

                                          byte[] pushData =args.getPushData();

                                          PduParserparser = new PduParser(pushData);

                                          GenericPdu ind= parser.parse();

       

                                          int type = PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND;

                                          if ((ind != null) &&(ind.getMessageType() == type)) {

                                              transaction = newNotificationTransaction(

                                                     TransactionService.this, serviceId,

                                                     transactionSettings, (NotificationInd) ind);

                                          } else {

                                              Log.e(TAG, "Invalid PUSH data.");

                                             transaction = null;

                                              return;

                                          }

                                      }

                                      break;

                                  case Transaction.RETRIEVE_TRANSACTION:

                                      transaction = newRetrieveTransaction(

                                             TransactionService.this, serviceId,

                                             transactionSettings, args.getUri());

                                      break;

                                  case Transaction.SEND_TRANSACTION://根據(jù)transactiontype響應(yīng)發(fā)送彩信

                                      Log.v(TAG, "Transaction.SEND_TRANSACTION");

                                      transaction = new SendTransaction(

                                             TransactionService.this, serviceId,

                                             transactionSettings, args.getUri());

                                      break;

                                  case Transaction.READREC_TRANSACTION:

                                      transaction = newReadRecTransaction(

                                              TransactionService.this, serviceId,

                                             transactionSettings, args.getUri());

                                      break;

                                  default:

                                      Log.w(TAG, "Invalidtransaction type: " + serviceId);

                                      transaction = null;

                                      return;

                              }

       

                              if (!processTransaction(transaction)) {

                                  transaction = null;

                                  return;

                              }

       

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "Started processing of incoming message: " + msg);

                              }

                          } catch (Exception ex) {

                              Log.w(TAG, "Exception occurred while handling message: " + msg, ex);

       

                              if (transaction != null) {

                                  try {

                                     transaction.detach(TransactionService.this);

                                      if (mProcessing.contains(transaction)){

                                          synchronized (mProcessing) {

                                              mProcessing.remove(transaction);

                                          }

                                      }

                                  } catch (Throwable t) {

                                      Log.e(TAG, "Unexpected Throwable.", t);

                                  } finally {

                                      // Set transaction to null to allow stopping the

                                      // transaction service.

                                      transaction = null;

                                  }

                              }

                          } finally {

                              if (transaction == null) {

                                  if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                      Log.v(TAG, "Transaction was null. Stopping self: " + serviceId);

                                  }

                                 endMmsConnectivity();

                                 stopSelf(serviceId);

                              }

                          }

                          return;

                      case EVENT_HANDLE_NEXT_PENDING_TRANSACTION:

                         processPendingTransaction(transaction, (TransactionSettings) msg.obj);

                          return;

                      default:

                          Log.w(TAG, "what=" + msg.what);

                          return;

                  }

              }

       

      10. src/com/android/mms/transaction/TransactionService.java

      /**

               * Internal method to begin processinga transaction.

               * @param transaction the transaction. Must not http://www.hbhlny.cn/mailto:be%7B@code null}.

               * @return http://www.hbhlny.cn/mailto:%7B@code true} if process hasbegun or will begin. http://www.hbhlny.cn/mailto:%7B@code false}

               * if the transaction should bediscarded.

               * @throws IOException if connectivityfor MMS traffic could not be

               * established.

               */

              private boolean processTransaction(Transaction transaction) throws IOException {

                  // Check if transaction already processing

              Log.v(TAG, "processTransaction");

                  synchronized (mProcessing) {

                      for (Transaction t : mPending) {

                          if (t.isEquivalent(transaction)) {

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "Transaction already pending: " +

                                         transaction.getServiceId());

                              }

                              return true;

                          }

                      }

                      for (Transaction t : mProcessing) {

                          if (t.isEquivalent(transaction)) {

                              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                                  Log.v(TAG, "Duplicated transaction: " + transaction.getServiceId());

                              }

                              return true;

                          }

                      }

       

                      /*

                      * Make sure that the networkconnectivity necessary

                      * for MMS traffic is enabled.If it is not, we need

                      * to defer processing thetransaction until

                      * connectivity is established.

                      */

                      if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                          Log.v(TAG, "processTransaction: callbeginMmsConnectivity...");

                      }

                      int connectivityResult = beginMmsConnectivity();

                      if (connectivityResult == Phone.APN_REQUEST_STARTED){

                          mPending.add(transaction);

                          if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                              Log.v(TAG, "processTransaction: connResult=APN_REQUEST_STARTED," +

                                      "defer transaction pending MMS connectivity");

                          }

                          return true;

                      }

       

                      if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                          Log.v(TAG, "Adding transaction to 'mProcessing' list: " + transaction);

                      }

                      mProcessing.add(transaction);

                  }

       

                  // Set a timer to keep renewing our "lease" on the MMSconnection

                  sendMessageDelayed(obtainMessage(EVENT_CONTINUE_MMS_CONNECTIVITY),

                                     APN_EXTENSION_WAIT);

       

                  if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                      Log.v(TAG, "processTransaction: starting transaction " + transaction);

                  }

       

                  // Attach to transaction and process it

                 transaction.attach(TransactionService.this);

                  transaction.process();

                  return true;

              }

       

      11.src/com/android/mms/transaction/SendTransaction.java

      @Override

          public void process() {

          Log.v(TAG, "process");

              mThread = new Thread(this);

              mThread.start();

          }

       

      12. src/com/android/mms/transaction/SendTransaction.java

      public void run() {

          Log.v(TAG, "run()");

              try {

                  RateController rateCtlr =RateController.getInstance();

                  if (rateCtlr.isLimitSurpassed() &&!rateCtlr.isAllowedByUser()) {

                      Log.e(TAG, "Sending rate limit surpassed.");

                      return;

                  }

       

                  // Load M-Send.req from outbox

                  PduPersister persister = PduPersister.getPduPersister(mContext);

                  SendReq sendReq = (SendReq)persister.load(mSendReqURI);

       

                  // Update the 'date' field of the PDU right before sending it.

                  long date = System.currentTimeMillis() /1000L;

                  sendReq.setDate(date);

       

                  // Persist the new date value into database.

                  ContentValues values = new ContentValues(1);

                  values.put(Mms.DATE, date);

                  SqliteWrapper.update(mContext, mContext.getContentResolver(),

                                       mSendReqURI, values, null, null);

       

                  // fix bug 2100169: insert the 'from' address per spec

                  String lineNumber = MessageUtils.getLocalNumber();

                  if (!TextUtils.isEmpty(lineNumber)) {

                      sendReq.setFrom(new EncodedStringValue(lineNumber));

                  }

       

                  // Pack M-Send.req, send it, retrieve confirmation data, and parse it

                  long tokenKey = ContentUris.parseId(mSendReqURI);

                  byte[] response = sendPdu(SendingProgressTokenManager.get(tokenKey),

                                            new PduComposer(mContext,sendReq).make());//發(fā)送彩信

                  SendingProgressTokenManager.remove(tokenKey);

       

                  if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {

                      String respStr = new String(response);

                      Log.d(TAG, "[SendTransaction] run: send mms msg (" + mId + "),resp=" + respStr);

                  }

       

                  SendConf conf = (SendConf)new PduParser(response).parse();

                  if (conf == null) {

                      Log.e(TAG, "No M-Send.conf received.");

                  }

       

                  // Check whether the responding Transaction-ID is consistent

                  // with the sent one.

                  byte[] reqId = sendReq.getTransactionId();

                  byte[] confId = conf.getTransactionId();

                  if (!Arrays.equals(reqId, confId)) {

                      Log.e(TAG, "Inconsistent Transaction-ID: req="

                              + new String(reqId) + ", conf=" + new String(confId));

                      return;

                  }

       

                  // From now on, we won't save the whole M-Send.conf into

                  // our database. Instead, we just save some interesting fields

                  // into the related M-Send.req.

                  values = new ContentValues(2);

                  int respStatus = conf.getResponseStatus();

                  values.put(Mms.RESPONSE_STATUS,respStatus);

       

                  if (respStatus != PduHeaders.RESPONSE_STATUS_OK){

                      SqliteWrapper.update(mContext, mContext.getContentResolver(),

                                           mSendReqURI, values, null, null);

                      Log.e(TAG, "Server returned an error code: " + respStatus);

                      return;

                  }

       

                  String messageId = PduPersister.toIsoString(conf.getMessageId());

                  values.put(Mms.MESSAGE_ID,messageId);

                  SqliteWrapper.update(mContext, mContext.getContentResolver(),

                                       mSendReqURI, values, null, null);

       

                  // Move M-Send.req from Outbox into Sent.

                  Uri uri = persister.move(mSendReqURI, Sent.CONTENT_URI);

       

                  mTransactionState.setState(TransactionState.SUCCESS);

                  mTransactionState.setContentUri(uri);

              } catch (Throwable t) {

                  Log.e(TAG, Log.getStackTraceString(t));

              } finally {

                  if (mTransactionState.getState() != TransactionState.SUCCESS) {

                      mTransactionState.setState(TransactionState.FAILED);

                      mTransactionState.setContentUri(mSendReqURI);

                      Log.e(TAG, "Delivery failed.");

                  }

                  notifyObservers();

              }

          }

       

      13.src/com/android/mms/transaction/Transaction.java

      /**

           * A common method to send a PDU to MMSC.

           *

           * @param token The token to identify the sendingprogress.

           * @param pdu A byte array which contains the dataof the PDU.

           * @return A byte array which containsthe response data.

           *        If an HTTP error code is returned, an IOException will be thrown.

           * @throws IOException if any erroroccurred on network interface or

           *        an HTTP error code(>=400) returned from the server.

           */

          protected byte[] sendPdu(long token, byte[]pdu) throws IOException {

              return sendPdu(token, pdu, mTransactionSettings.getMmscUrl());

          }

       

      14. src/com/android/mms/transaction/Transaction.java

      protected byte[] sendPdu(long token, byte[] pdu, StringmmscUrl) throws IOException {

              ensureRouteToHost(mmscUrl, mTransactionSettings);

              return HttpUtils.httpConnection(

                      mContext, token,

                      mmscUrl,

                      pdu, HttpUtils.HTTP_POST_METHOD,

                      mTransactionSettings.isProxySet(),

                      mTransactionSettings.getProxyAddress(),

                      mTransactionSettings.getProxyPort());//通過網(wǎng)絡(luò)發(fā)送彩信,AP層的最后實現(xiàn)

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