Android URL通过OkGo下载pdf或docx到本地

private ProgressDialog progressDialog;

//新建一个File，传入文件夹目录
                            String SDPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/by/";
                            File file1 = new File(SDPath);
                            //判断文件夹是否存在，如果不存在就创建，否则不创建
                            if (!file1.exists()) {
                                //通过file的mkdirs()方法创建目录中包含却不存在的文件夹
                                file1.mkdirs();
                            }

 
    private void downFile(String url, String destFileDir, String destFileName, int type) {
        OkGo.get(url)
                .tag(this)
                //.headers("header1", "headerValue1")//
                //.params("param1", "paramValue1")//
                .execute(new FileCallback(destFileDir, destFileName) {
                    @Override
                    public void onStart(Request request) {
                        super.onStart(request);
                        LogUtils.e("正在下载中。。。。。");
                        if(type == 1){
                            progressDialog = new ProgressDialog(mContext);
                            progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
//                            progressDialog.setMax(100);
//                            progressDialog.setIndeterminate(false);
                            progressDialog.setCancelable(false);
                            progressDialog.show();
                        }
                    }

                    @Override
                    public void onSuccess(Response response) {
                        LogUtils.e("下载完成");
                        LogUtils.e("response.body()==" + response.body());
                        if(type == 0){
                            //zLoadingDialog.dismiss();
                            //openPDF(response.body());//打开PDF文件
                            //Bundle bundle = new Bundle();
                            //bundle.putString("pdfUrl", response.body().toString());
                            //startActivity(PDFViewActivity.class, bundle);
                        }else {
                            ToastUtils.showLong(destFileName + "下载完成");
//                            progressDialog.dismiss();
                            DownTimer();
                        }
                    }

                    @Override
                    public void onError(Response response) {
                        super.onError(response);
                        //zLoadingDialog.dismiss();
                        ToastUtils.showLong("下载出错");
                        progressDialog.dismiss();
                    }

                    @Override
                    public void downloadProgress(Progress progress) {
                        super.downloadProgress(progress);
                        Log.e("=========：", String.valueOf(progress.fraction));
                        Message msg = handler.obtainMessage();
                        msg.what = 1;
                        msg.arg1 = (int) progress.fraction * 100;
                        handler.sendMessage(msg);
                    }
                });
    }

    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                case 1:
                    //进度条的值
                    int i = msg.arg1;
                    progressDialog.setProgress(i);
            }
//            if (msg.arg1 == 100) {
//                //ToastUtils.showLong("文件下载成功");
//                progressDialog.dismiss();
//            }
        }
    };

    
    private void DownTimer(){
         CountDownTimer timer = new CountDownTimer(1000, 1000) {
            public void onTick(long millisUntilFinished) {
//                txt.setText("倒计时" + millisUntilFinished / 1000 + "秒");
            }

            public void onFinish() {
                progressDialog.dismiss();
            }
        };
        //调用 CountDownTimer 对象的 start() 方法开始倒计时，也不涉及到线程处理
        timer.start();
    }

要引用的控件

//网络加载框架
implementation 'com.lzy.net:okgo:3.0.4'

//工具类
implementation 'com.blankj:utilcodex:1.31.0'