OkHttp的post上传文件

最近要用到想服务器上传文件数据，先抄个作业，明天研究之后再做定论：

public  void  btnUpload(View v){
//        newName = "base.jpg";
        newName =  "VideoTest.mp4" ;
        uploadFilePath = Environment.getExternalStorageDirectory().getAbsolutePath()+File.separator+newName;
        uploadFile =  new  File(uploadFilePath);
        if (!uploadFile.exists()) {
            Toast.makeText(MainActivity. this ,  "文件不存在，请修改文件路径" , Toast.LENGTH_SHORT).show();
            return ;
        }
        actionUrl =  "http://182.92.152.12:10898/check_again" ;
//        actionUrl = "http://server.jeasonlzy.com/OkHttpUtils/upload";
        Map params =  new  HashMap<>();
        params.put( "info" , "panbaomeng" );
        OkHttpUtils.post()
                .addFile( "newName" ,newName,uploadFile)
                .url(actionUrl)
                .params(params)
                .build()
                .execute( new  MyStringCallback());

    }

    public  class  MyStringCallback  extends  StringCallback
    {
        @Override
        public  void  onBefore(Request request,  int  id)
        {
            setTitle( "loading..." );
        }

        @Override
        public  void  onAfter( int  id)
        {
            setTitle( "Sample-okHttp" );
        }

        @Override
        public  void  onError(Call call, Exception e,  int  id)
        {
            e.printStackTrace();
            Log.e( "onError:" ,e.getMessage());
        }

        @Override
        public  void  onResponse(String response,  int  id)
        {
            Log.e( "onResponse" , response);

            switch  (id)
            {
                case  100 :
                    Toast.makeText(MainActivity. this ,  "http" , Toast.LENGTH_SHORT).show();
                    break ;
                case  101 :
                    Toast.makeText(MainActivity. this ,  "https" , Toast.LENGTH_SHORT).show();
                    break ;
            }
        }

        @Override
        public  void  inProgress( float  progress,  long  total,  int  id)
        {
//            Log.e(TAG, "inProgress:" + progress);
//            mProgressBar.setProgress((int) (100 * progress));
        }
    }