Android KitKat (API 19)——如何在非默认应用程序中不发送短信而在SMS内容提供者中写入信息?

I am trying to create an Android app that writes messages in the Sent Box of the system. These messages should not be sent over the GSM network to the recipient, the idea is only to write them in the Sent Content Provider.I am trying to create an Android app that write