OS.shell_open() does not open files (Android)

Question

I have a pdf file in my res:// folder. Let's call it file.pdf.

The main scene has the following structure:
Control
--Button

with the following code:

extends Control

func _on_Button_pressed():
    print("Button Pressed")

    var error = OS.shell_open("file.pdf")

    if error:
        print(error)
    else:
        print("file.pdf opened")

This works as expected and opens the pdf file on PC (Ubuntu) but doesn't open the file on android.

The debugger outputs:
Button Pressed
19

---

• I've also tested this with .png, .html, and a directory. These also work on PC but not on android.
• I've also tried granting read and write external storage permissions, still doesn't work
• I tried an online pdf file with
  OS.shell_open("https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf")
  and it worked

Answer 1

I was also facing these issues earlier but then I found that the path with " res:// " isn't accessible in Android .
Instead save it in " users:// " as there you can access it even in Android.