问如何在录制视频时将麦克风静音？

EN

private void setMicMuted(boolean state){
    AudioManager myAudioManager = (AudioManager)con.getSystemService(Context.AUDIO_SERVICE);

    // get the working mode and keep it
    int workingAudioMode = myAudioManager.getMode();

    myAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);

    // change mic state only if needed
    if (myAudioManager.isMicrophoneMute() != state) {
        myAudioManager.setMicrophoneMute(state);
    }

    // set back the original working mode
    myAudioManager.setMode(workingAudioMode); }