Help on Andriod to ESP32 audio

Hi,
I have an ESP32 with a a speaker and a max98357a I2S amplifier.
I am trying to do the following:
On an android device (with the HA companion app) be able to use the microphone to transmit audio to the ESP32.
I am looking for a tutorial with some sort of button that I press to speak.
Any help will be apreciated.

I’ve seen people ask similar questions in the past on here and I don’t recall ever seeing a real way to do this.

Same here, would really love this!