swipe keyboard code crash on back button

Yes I do see that - but its only when you first open an existing note to edit it.

I think there is a case for not showing the cribsheet when you go to edit a note. If you are editing it is safe to assume you know you can tap the screen to get the cribsheet if you want it. Not sure if that is possible with the code. I guess the cribsheet would initially only be shown if length(notetext) == 0 OR you tap the screen ?

maybe make it draw it first in color and then when you tap make it draw in black and white?

That works.