How to use Download Manager in android Studio

Use download manager 

 DownloadButton = findViewById(R.id.downloadButton);

 DownloadButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        downloadManager = (DownloadManager)getSystemService(Context.DOWNLOAD_SERVICE);
        Uri uri = Uri.parse(memeImageUrl);
        DownloadManager.Request request = new DownloadManager.Request(uri);
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
        Long reference = downloadManager.enqueue(request);
    }
 });