How to log in to app if made account by connecting to Facebook?

[Mariah Richardson]

I have the android central app and I can't login because I technically don't have a username and password since I had my account made by connecting to Facebook. What do I do?

 

[solutioncdn]

(1) Your app uses only Facebook Login to authorize people using your app.
(2) Your app provides two login options: Facebook Login and your own login mechanism.
(3) Your app uses your own login initially and Facebook Login is an option to switch on certain social features.

Facebook SDK provides a UserSettingsFragment class that can be hosted by your login activity to display the Facebook login/logout button. In case (2), the Facebook SDK provides a LoginButton class that provides a button you can drop into your UI. The LoginButton class maintains the session state and is used to log people in and out.