Android - 录制视频时将麦克风静音

Question

在遵循与此类似的教程之后，我正在使用 MediaRecorder 类用相机录制视频

http://androidcookbook.com/Recipe.seam;jsessionid=40151FCD26222877E151C3EEFB406EED?recipeId=1375&recipeFrom=ViewTOC

而且我希望在录音时能够将麦克风静音/取消静音。这怎么可能？

我在开始时设置音频源

 mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
    mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

但是如果我想在某个时刻录制无声怎么办？

Answer 1

试试下面的代码:

private void setMicMuted(boolean state){
    AudioManager myAudioManager = (AudioManager)mContext.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);
}