How can I download a pdf from firebase and access it from my app directory?

Question

I have an app in flutter which I am able to upload pdf into firebase storage successfully. I am able to fetch the respective url but when I click on it, it downloads outside of the app. This is not what I want, I would like to get the pdf download within the app. Any help will be appreciated.

Solution

With help from here:

var dir = (await getApplicationDocumentsDirectory()).path;
var req = await http.Client().get(Uri.parse(url));
var file = File('$dir/$filename');
return file.writeAsBytes(req.bodyBytes);