Version 2.0 (Update)
Problem with the OnPermissionRequest block was solved and the variable grantedAll was implemented (returns true if all permissions were granted). It is worth noting that the block will not be called during emulation, because Activity is only added when exporting the application.
This could be easily fixed using PermissionResultHandler class from App Inventor.
You can use it in this way:
public void FileAccess(boolean follow) {
LoadLocalFiles = follow;
if (!hasReadAccess){
new Handler().post(new Runnable() {
@Override
public void run() {
form.askPermission(Manifest.permission.READ_EXTERNAL_STORAGE,
new PermissionResultHandler() {
@Override
public void HandlePermissionResponse(String permission, boolean granted) {
hasReadAccess = granted;
}
});
}
});
if (hasReadAccess){
webView.getSettings().setAllowFileAccess(LoadLocalFiles);
webView.getSettings().setAllowFileAccessFromFileURLs(LoadLocalFiles);
webView.getSettings().setAllowUniversalAccessFromFileURLs(LoadLocalFiles);
webView.getSettings().setAllowContentAccess(LoadLocalFiles);
}else{
webView.getSettings().setAllowFileAccess(false);
webView.getSettings().setAllowFileAccessFromFileURLs(false);
webView.getSettings().setAllowUniversalAccessFromFileURLs(false);
webView.getSettings().setAllowContentAccess(false);
}
}
}
Btw nice extension 
I’ve seen this shape before, but there’s no way to put an Array at the entrance. It would be possible to solve with a for, but there would not be a sequence of permissions in the same dialog.
Great, but you might want to reduce the icon size of your extension (512x512 → 20x20 px):
App Inventor / AI2:
I linked this in the AI2 forum.
Problem solved, I just updated.
I’m using this very good extension. Compliments. How can i compensate?
Its use is already the reward. 
not fair… i feel in debt 
thanks anyway
Amazing! Thank you for working for the community.
As Evan Patton said, “the extension author will need to update their extension to use the AndroidX libraries as Google has deprecated the older Android Support libraries and we are no longer using them in App Inventor.”
But Kodular still uses the Support library, as @Mika said:
… and that’s why I asked you:
Kodular is in full mood to play game with us 
If I request all permissions on screen1, do I no longer need to request when I get to screen2?
No, you don’t need to request for permission again, if they are once granted.
It’s better to always ask for solution with errors are you getting and blocks you tried
I tried but couldn’t find the answer to this kind of question
