Android - 录制视频时将麦克风静音 [英] Android - mute microphone while recording video

问题描述

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

I'm recording a video with the camera, using the MediaRecorder class, after following a tutorial similiar to this

http://androidcookbook.com/Recipejsessionid=40151FCD26222877E151C3EEFB406EED?recipeId=1375&recipeFrom=ViewTOC

我希望在录音时能够将麦克风静音/取消静音.这怎么可能?

And I want while recording, to be able to mute / unmute the microphone. How's that possible?

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候无声录音怎么办?

But what if I want to record without sound at some point?

推荐答案

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);
}

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