Android关闭麦克风API：

http://developer.android.com/reference/android/media/AudioManager.html#setMicrophoneMute(boolean)

public void setMicrophoneMute (boolean on)


Sets the microphone mute on or off.

This method should only be used by applications that replace the platform-wide management of audio settings or the main telephony application.



Parameters

on

true to mute the microphone; false




mute 1.静音 2.的沉默的 3.弱音器 4.哑音 5.减弱 的声音 MUTE 1.静音 2.哑音 M






Android电话录音API：



http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html



public void setAudioSource (int audio_source)



Since:  API Level 1



Sets the audio source to be used for recording. If this method is not called, the output file will not contain an audio track. The source needs to be specified before setting recording-parameters or encoders. Call this only before setOutputFormat().



Parameters

audio_source

the audio source to use

int VOICE_CALL Voice call uplink + downlink audio source








Throws

IllegalStateException

if it is called after setOutputFormat()



See Also

MediaRecorder.AudioSource 




recorder = new MediaRecorder();
recorder.setAudioSource(AudioSource.MIC);//声音采集来源(话筒)






Android向电话上行音频流中注入数据API（给对方播放录音）：