Drawing app undo & redo button

[Taifun]

@Jon_Stier

Second: I was attempting to get the Save Button to save the drawings, done on the canvas in the Drawing Section--under the Drawing Tab, to the gallery

You have to store the file in shared storage and additionally use the GalleryRefresh method from the tools extension

App Inventor Extensions: Tools | Pura Vida Apps

See also Some basics on Android storage system

Taifun