处理多线程，断点续传，下载进度条等问题，xUtils框架

注意事项，第一注意你的文件是否是已经下载过的，否则会出现，无法下载的情况

                第二注意看一下你的下载地址是否正确

                第三，非常重要，注意权限问题，这个框架的使用需要1、网络权限，2、SD卡的写入权限

publicclassMainActivityextendsActivity {

   privateTextViewtv_failure;

   privateTextViewtv_progress;

     privateProgressBarpb;

     @Override

   protectedvoidonCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

       tv_failure= (TextView) findViewById(R.id.tv_failure);

       tv_progress= (TextView) findViewById(R.id.tv_progress);

       pb= (ProgressBar) findViewById(R.id.pb);

    }

   publicvoidclick(View v){

     HttpUtils utils =newHttpUtils();

        String fileName ="TakeColor.exe";

        //确定下载地址

         String path ="http://192.168.6.136:8080/"+ fileName;

     utils.download(path,//下载地址

              "sdcard/TakeColor.exe",//文件保存路径

              true,//是否支持断点续传

              true,//是否下载支持重命名

              newRequestCallBack<File>() {

                        //下载成功后调用

                        @Override

                        publicvoidonSuccess(ResponseInfo<File> arg0) {

                             //TODOAuto-generated method stub

                             Toast.makeText(MainActivity.this, arg0.result.getPath(), 0).show();

                        }

                        //下载失败后调用

                        @Override

                        publicvoidonFailure(HttpException arg0, String arg1) {

                             //TODOAuto-generated method stub

                             tv_failure.setText(arg1);

                        }

                        

                        @Override

                        publicvoidonLoading(longtotal,longcurrent,

                                  booleanisUploading) {

                             //TODOAuto-generated method stub

                             super.onLoading(total, current, isUploading);

                             pb.setMax((int)total);

                             pb.setProgress((int)current);

                             

                             

                        }

                        

                        

                        

                   });

    }

}