Example of how to download a video using Okhttp and show a progress bar to the user

VideoDownloader.java

class VideoDownloader extends AsyncTask<Void, Long, Boolean> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }

        @Override
        protected Boolean doInBackground(Void... params) {

            OkHttpClient client = new OkHttpClient();
            String url = "http://myamazingvideo.mp4";                        
            Call call = client.newCall(new Request.Builder().url(url).get().build());

            try {
                Response response = call.execute();
                if (response.code() == 200 || response.code() == 201) {

                    Headers responseHeaders = response.headers();
                    for (int i = 0; i < responseHeaders.size(); i++) {
                        Log.d(LOG_TAG, responseHeaders.name(i) + ": " + responseHeaders.value(i));
                    }

                    InputStream inputStream = null;
                    try {
                        inputStream = response.body().byteStream();

                        byte[] buff = new byte[1024 * 4];
                        long downloaded = 0;
                        long target = response.body().contentLength();
                        mediaFile = new File(getActivity().getCacheDir(), "mySuperVideo.mp4");
                        OutputStream output = new FileOutputStream(mediaFile);

                        publishProgress(0L, target);
                        while (true) {
                            int readed = inputStream.read(buff);

                            if (readed == -1) {
                                break;
                            }
                            output.write(buff, 0, readed);
                            //write buff
                            downloaded += readed;
                            publishProgress(downloaded, target);
                            if (isCancelled()) {
                                return false;
                            }
                        }

                        output.flush();
                        output.close();

                        return downloaded == target;
                    } catch (IOException ignore) {
                        return false;
                    } finally {
                        if (inputStream != null) {
                            inputStream.close();
                        }
                    }
                } else {
                    return false;
                }
            } catch (IOException e) {
                e.printStackTrace();
                return false;
            }
        }

        @Override
        protected void onProgressUpdate(Long... values) {
            super.onProgressUpdate(values);
            progressBar.setMax(values[1].intValue());
            progressBar.setProgress(values[0].intValue());

        }

        @Override
        protected void onPostExecute(Boolean aBoolean) {
            super.onPostExecute(aBoolean);

            progressBar.setVisibility(View.GONE);

            if (mediaFile != null && mediaFile.exists()) {
                playVideo();
            }
        }
    }

Can I use both OkHttp and DownloadManager (I want to show the download status at statusBar) for downloading videos programmatically?

@Ronacs You can use DownloadManager#addCompletedDownload() method and add the alredy downloaded file to the DownloadManager's database!