title: How to set token as a global variable in flutter? so i can access the token wherever i want
body: <p>I build an app using Firebase Authentication, after login, I have to save the token as a global variable so I can use that token wherever I want. I have tried to pass it as global variable in constant but I got stuck when because when I re-run the app, the token is erased.</p>
  
  <p>thank you.</p>