Android DownloadManager example

This method will download the file from the url and save it with the filename of outputFileName. When the download is completed, there will be a notification show up in the status bar.

public void downloadByDownloadManager(String url, String outputFileName) {
    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
    request.setDescription("A zip package with some files");
    request.setTitle("Zip package");
    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    request.allowScanningByMediaScanner();
    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, outputFileName);

    Log.d("MainActivity: ", "download folder>>>>" + Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath());

    // get download service and enqueue file
    DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
    manager.enqueue(request);
}

Make sure the INTERNET and WRITE_EXTERNAL_STORAGE permissions are granted in the manifest file.

Sample usage of the above method using the DownloadManager.

downloadByDownloadManager("https://github.com/username/projectname/archive/hello.zip", "hello.zip");

Official Documentation for the DownloadManager.