Hii Can it use external microphone from a headphone?

[ghazalialshafi]

I want the library to use external mic can it use it if yes how ?

[hardcodedjoy]

When you connect headphones or external soundcard to your android device, most apps should switch to using that automatically.
You can test it by recording an audio message on WhatsApp.

You can also experiment with setting different audioSource in the code:

audioSource = MediaRecorder.AudioSource._____;