Resolved how to request permissions to a apk

Hello, I would like to know how to make the user be able to grant storage permissions to an app.

I searched for all kinds of information (Permission in unity, modify the AndroidManifest) but I couldn't find it in any way.

When modifying the AndroidManifest it does appear to grant permission, but I have to do it manually from the phone/application settings.

But I want a way that the user inside the app should appear the typical permissions window.

Thank you

 

creating the 2 scripts present here https://docs.unity3d.com/2019.1/Documentation/Manual/android-RequestingPermissions.html (changing the permissions you want obviously)

and adding in the AndroidManifest the following
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

everything works correctly