Android手机通话录音实现，android手机通话录音,主要用到了MediaRe

Android手机通话录音实现，android手机通话录音,主要用到了MediaRe

主要用到了MediaRecorder类，实现代码如下：```java MediaRecorder mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

        File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath(),"ivr_record");          if(!dir.exists()){              dir.mkdirs();          }        mFileName = new File(dir,"ivr_"+System.currentTimeMillis()+".3gp").getAbsolutePath();        Log.i(TAG, "start recording:"+mFileName);        mRecorder.setOutputFile(mFileName);          mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);        try {              mRecorder.prepare();          } catch (IOException e) {              Log.e(TAG, "prepare() failed");          }        mRecorder.start();

 这种方式只能录自己的语音，对方的语音录不到，如果想录对方的语音，只需要将audio source设置成 MediaRecorder.AudioSource.VOICE_CALL就可以了，代码如下： ```java    MediaRecorder mRecorder = new MediaRecorder();              mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);              mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);              File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath(),"ivr_record");              if(!dir.exists()){                  dir.mkdirs();              }              mFileName = new File(dir,"ivr_"+System.currentTimeMillis()+".3gp").getAbsolutePath();              Log.i(TAG, "start recording:"+mFileName);              mRecorder.setOutputFile(mFileName);              mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);              try {                  mRecorder.prepare();              } catch (IOException e) {                  Log.e(TAG, "prepare() failed");              }              mRecorder.start();