android录音MP3格式文件

项目有录音功能，本来是录制的arm格式的文件，需求让改成MP3格式，折腾半天发现android本身做不到这一点，只能借助ndk来完成，下面是ndk的配置级MP3格式文件的录制

一、ndk介绍及下载：http://wear.techbrood.com/tools/sdk/ndk/index.html

二、接下来是android studio配置ndk

1、project structure里面配置NDK路径

2.src下的build.gradle里defaultConfig下添加

ndk {            moduleName"mp3lame"            ldLibs "log", "z", "m"            abiFilters "armeabi", "armeabi-v7a"        }

3. gradle.properties最后添加

android.useDeprecatedNdk=true

4.从https://github.com/talzeus/AndroidMp3Recorder中demo下载下来，jni文件夹拷贝到main下，audiorecoder文件夹拷贝到项目里，

libmp3lame下的.c和.h文件名及文件里面的一些地方要改成自己的包名

libs下的文件都拷贝到自己项目的libs下

5.build make project

此时build>intermediates>ndk>debug下lib和obj下应该都有相应的.so文件了

三、调用MP3recoder录制MP3格式的录音

点击按钮开始录音

mRecordBtn.setOnTouchListener(new VoiceTouchListen());

录音结果及录音完成回调

final Mp3Recorder recorder = new Mp3Recorder();    class VoiceTouchListen implements View.OnTouchListener {        @Override        public boolean onTouch(View v, MotionEvent event) {            switch (event.getAction()) {                case MotionEvent.ACTION_DOWN:                    if (!FileUtils.checkSDcard()) {                        Toast.makeText(context, "发送语音需要sd卡支持！", Toast.LENGTH_SHORT).show();                        return false;                    }                    v.setPressed(true);                    handler.postDelayed(runnable, 1000);                    // 开始录音                    try {                        recorder.startRecording();                    } catch(IOException e) {                        Log.d("MainActivity", "Start error");                    }                    return true;                case MotionEvent.ACTION_MOVE: {                    return true;                }                case MotionEvent.ACTION_UP:                    v.setPressed(false);                    try {//                        if (event.getY() < 0) {// 放弃录音//                            recordManager.cancelRecording();//                            L.d("放弃发送语音");//                        } else {                        handler.removeCallbacks(runnable);                        try {                            recorder.stopRecording();                        } catch(IOException e) {                            Log.d("MainActivity", "Stop error");                        }                        //int recordTime = recordManager.stopRecording();                        if (recLen > 1) {                        filePath = recorder.getRecordFilePath();                            //filePath = recordManager.getRecordFilePath(IConst.Cache.RECORD, SDApp.getUserId());                            mPlayBtn.setImageResource(R.drawable.shop_log_record_play);                        } else {// 录音时间过短，则提示录音过短的提示                            Toast.makeText(context, "录音时间过短！", Toast.LENGTH_SHORT).show();                            filePath = null;                        }//                        }                    } catch (Exception e) {                        e.printStackTrace();                    }                    return true;                default:                    return false;            }        }    }

public static interface OnRecordFinishListener {        public void onRecordFinish(String filePath);    }

handler记录长度

private int recLen = 0;    Handler handler = new Handler();    Runnable runnable = new Runnable() {        @Override        public void run() {            recLen++;            mState.setText("长度 : " + recLen + "秒");            handler.postDelayed(this, 1000);        }    };

试听录音和停止试听

 if (playManager.isPlaying()) {            playManager.stopPlayback();        } else {            playManager.playRecording(filePath, true);        }

在OnRecordFinishListener回调中上传文件

public AddRecordDialog(Context context, OnRecordFinishListener listener) {        this.context = context;        this.listener = listener;    }

AddRecordDialog dialog = new AddRecordDialog(context, new AddRecordDialog.OnRecordFinishListener() {                    @Override                    public void onRecordFinish(String filePath) {                                          //上传文件                    }                });                dialog.show();

最后，查看录音

private void playLogVoice(View view, ShopLog log) {        ImageView img = (ImageView) view.findViewById(R.id.voiceImg);        final AnimationDrawable anim = (AnimationDrawable) img.getDrawable();        //如果在播放其他音频 则关闭        String dir = IConst.Cache.RECORD + Md5Encryption.getMD5(getUserId());        String fileName = null;        fileName = log.getFile_path().substring(log.getFile_path().lastIndexOf("/")+1);        if(playManager==null){            playManager = PlayManager.getInstance(context);        }        if(TextUtils.isEmpty(dir + File.separator + fileName)){            return;        }        if (playManager.isPlaying() && !playManager.isPlaying(dir + File.separator + fileName)) {            playManager.stopPlayback();            L.d("停止播放其他");        }        //监听播放  更新动画        playManager.setOnPlayChangeListener(new IOnPlayChangeListener() {            @Override            public void onPlayStart() {                L.d("start");                anim.start();            }            @Override            public void onPlayStop() {                L.d("stop");                anim.stop();            }        });        if (new File(dir).exists() && new File(dir + File.separator + fileName).exists()) {            L.d("0000000000--0");            if (playManager.isPlaying()) {                L.d("0000000000--1");                playManager.stopPlayback();            } else {                playManager.playRecording(dir + File.separator + fileName, true);            }        } else {            L.d("11111111111--0");            if(log.getFile_path()==null){return;}            L.d("log.getFilePath()--"+log.getFile_path());            L.d("log.getFileName()--"+fileName);

Request request = new Request.Builder().url(path).build();        RequestTask requestTask = new RequestTask<>(request, savePath, fileName,

new RequestCallBack() {                @Override                public void onSuccess(ResponseInfo responseInfo) {                    L.d(responseInfo.result.getAbsolutePath());                    playManager.playRecording(responseInfo.result.getAbsolutePath(), true);                }                @Override                public void onFinish() {                }                @Override                public void onFailure(HttpException error) {                    showToast(error.errorMsg);                }            }

); requestTask.execute();

备注：如果MP3Recorder类中没有调用本地方法需加上（android调用本地方法）

static {System.loadLibrary("mp3lame");}

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