Android doesn't register any Microphone objects

[dmanning23]

I'm trying to use the Microphone functionality that was recently added to MonoGame 3.7, but I'm having problems on the Android platform.

Here's the helper library I wrote for it:
https://github.com/dmanning23/MicBuddy

More importantly, here's the example project that shows this issue:
https://github.com/dmanning23/MicBuddySample

This project works as expected in iOS. The app starts, and the default microphone is detected by MonoGame and registered with the system. On Android however it never registers any microphones. (The first thing I double-checked was that I had the RECORD_AUDIO permission, but that doesn't seem to be the problem.) The Microphone.Default parameter is always null, and Microphone.All list is always empty.

Is there any extra initialization that needs to occur on Android that I am unaware of?

What version of MonoGame does the bug occur on:

• MonoGame 3.7

What operating system are you using:

• Android 7+

What MonoGame platform are you using:

• Android
• iOS

[dmanning23]

Looking through the code, I bet this is related to this line:

MonoGame/MonoGame.Framework/Audio/Microphone.OpenAL.cs

Line 55 in 05df785

#if true //DESKTOPGL

The else condition of that precompiler flag specifically mentions Xamarin. I know the DesktopGL project has a LINUX DefineConstant, should that if check be changed to:
#if LINUX //DESKTOPGL

[Jjagg]

Not sure why that's set to true if the else branch is meant to be for Xamarin. I don't have time rn, but we should check git blame and figure out why it is that way.

[dmanning23]

Darn it, that would have been too easy. Tried toggling that if check, but it throws a NoMicrophoneConnectedException: Failed to open capture device.
when trying to start the microphone :(

[Jjagg]

@MrHelmut

You had Android microphone working, right?