Native MidiDeviceService?

[Fabrizio Benedetti]

Hi everyone. I am new to Android programming but I have been programming in C++ (and a little bit of Java) for the last 30 years.

I have just started a project in Android; I have succesfully implemented a skeleton MidiDeviceService in Kotlin. I plan to move the code to native C++ at some later stage but I can't understand if:

(1) can a MidiDeviceService be implemented in C++?

Also, a thing that puzzles me is:

(2) what thread am I running in, in my implementation of MidiDeviceService::onSend()?

I tried to open a socket in onCreate(), and I got the exception "NetworkOnMainThread"; I was expecting some threading issue in using networking from there, but I wasn't expecting the Service methods to be called from the UI thread - because "MainThread" means "the main UI thread of the activity", doesn't it?

Thanks in advance for all the help that will come from this group!

Ciao

Fabrizio