How does setMicrophoneMute() work?

Question

I have been trying to use Android\'s AudioManager.setMicrophoneMute() without much success. That is, it simply refuses to mute the microphone, no matter what I

Answer 1

I found the same issues on samsung Galaxy and I solved it by using MODE_IN_COMMUNICATION mode.

In the AudioManager.java source codeit says :

1. MODE_IN_CALL - In call audio mode. A telephony call is established.
2. MODE_IN_COMMUNICATION - In communication audio mode. An audio/video chat or VoIP call is established.

Because i use the third VOIP library, I use the MODE_IN_COMMUNICATION and it solved the issue.

AudioManager audioManager = (AudioManager)
context.getSystemService(Context.AUDIO_SERVICE);
// get original mode 
int originalMode = audioManager.getMode();
audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
// change mute 
boolean state = !audioManager.isMicrophoneMute();
audioManager.setMicrophoneMute(state);
// set mode back 
audioManager.setMode(originalMode);