Thank you for your reply!
So I guess 'sharesnd.py' in that package replaces the following methods that you created for me earlier, and which seem a bit from complex/'verbose':
class ShareBox(ScalableLabel):
def create_file_intent(self, filepath, MIMEtype):
def share_text_choose(self, data):
def share_file_choose(self, filepath, MIMEtype):
# HERE: Wrapper around self.share_file_choose(filepath, MIMEtype)
def share_file(self, internal_filename, MIMEtype):
def share_file_direct(self, filepath, MIMEtype, app):
I can see that the 'storage.py' in this package is the module that never worked on my MOTO G5 Android phone. And I never managed to get the simulators in Android Studio to work. And Google never really addressed that issue when I contacted them...
Henrik