app or user setting page ? how to connect a button in setting page to enable or disable the functionality
i have been search this course and lots of other places none of them discuss about how to make a setting page of an app, which i think it is essential for every app? maybe it is very easy, but i just can't think through how to enable/disable a button to activate the funationality of that button, please give me some hint or show me any online article if that is available, thanks very much