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jopen
10年前发布

Android手机通话录音实现

主要用到了MediaRecorder类，实现代码如下： 

    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： 

    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();