FireBaseUI Auth - how to know if account is from a new signup or existing user?
问题 I am using firebaseUI for authentication. it essentially opens a a external activity and logs the user into firebase and sends the developer a call back in onActivityResult. It works great the problem is i need to know if the user is a new signup or an existing user. is there any kind of metadata or something i can use to know this ? here is what i have so far IN JAVA ANDROID: private void ititFireBaseUi() { AuthUI.getInstance() .signOut(getActivity()) .addOnCompleteListener(new