Android audio real-time transmission and playback (I): written at the beginning

I recently learned about Streaming Media on Android. I didn't know anything at first, and I didn't know where to start. I just went online and looked at the information. It was really a matter of feeling the stone.

Later, I learned a little more about the materials. I would like to thank the people who provided the materials online. I have learned a lot.

Now the real-time transmission and playback of audio in Amr format are implemented on Android. Write it down here, hoping to help friends who need it.

The function is basically implemented,CodeMay not be well written. I hope my friends can give me some suggestions and comments. You can help each other and make progress together.