Android Question Unknown type ExternalFile

[GuyBooth]

In my app using the "traditional" approach with activities, in my class for external storage I declare the following:

    Public Root As ExternalFile
.
.
    Public Sub List_Files (Folder As ExternalFile) As List
    .
    .
    End sub

The code works fine, no errors show in the logs.
I am trying to "translate" my code to a B4XPages based app.
When I use the same declaration in the B4XPages based app the logs show:

clExtStorage - 11: Unknown type: externalfile. Are you missing a library reference?

at any point that I try to make a declaration for and "externalfile".
I don't see that I have missed any of the libraries, and none of my other code shows similar errors.
Does anyone have any suggestions for what I am missing?

 

[Erel]

Remove the ExternalStorage class and add a reference to ExternalStorage library.

 

[GuyBooth]

Remove the ExternalStorage class and add a reference to ExternalStorage library.

... and add the ExternalStorage.b4xlib to my B4X Additional Libraries folder ... works.