当用户未登录时，如何让应用程序要求登录。在 KivyMD 中

Question

I am making a Music App using Kivy rather KivyMD in Python. I want to make the app to ask for login when the app has been opened for first time in the mobile or opened after a logout. Please help me

Answer 1

I don't know Kivy, but if you have your login written in Python:

Create a bool that is set to true whenever the user logs in and false when logged out and on default (for the first time opening the app). Then, on startups, check the bool value with an if statement, and if the bool is false , prompt a login. Something like this (bear in mind, I'm not the best with Python):

bool loggedIn = False;

def LogIn():
    #other login stuff
    loggedIn = True
          
def LogOut():
    #other login stuff
    loggedIn = True

def StartUpFunction():
    if loggedIn == False:
        LogIn()

Answer 2

I don't know how to do it in Kivy and on mobile, but for webpages you save a usertoken encrypted in the localstorage of your browser. I would use a file, where I add and delete this token and check the file (or Database) every time you start the app