Android4.4 Telephony Process Analysis-MMS sending process, android4.4

Source: Internet
Author: User

Android4.4 Telephony Process Analysis-MMS sending process, android4.4

The code in this article takes the MTK platform Android 4.4 as the analysis object, which is somewhat different from Google's native AOSP. Please be aware of it.


Multimedia Messaging relies on the WAP network to implement Http-based applications in Android4.4. For several key classes in the MMS transmission process:



SendTransaction: Send MMS

NotificationTransaction: receive MMS messages

ReadRecTransaction: MMS Reading Report

RetrieveTransaction: MMS download


TransactionService is a service that schedules and processes various MMS events.


Sequence diagram of the MMS sending process:



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