The latest Chinese text message method sent by andriod

For example, there are many methods on the Internet for sending Chinese text messages, but when it is used, the methods found are outdated. Basically, the methods are to reconstruct PDUS;
However, after andriod1.6, The SubmitPdu class is hidden and the method is directly discarded;
However, there is still a solution. One is to use the reflection mechanism, but it is troublesome and has not been studied in depth;
There is a classic saying: God always closes the door and opens the window.
Since there is no ready-made method, I will study it myself. By studying the android source code, I found another method:

This method uses another interface:
SmsManager. sendMultipartTextMessage ()