A very small question that really matters to me #144
Description
Description: The structure of my project is UITabbarViewController -> UINavigationController->CustomViewController. I present a BViewController on the CustomViewController and everything is normal here, but I have to judge the login in the CustomViewController, and push the login interface without logging in. The login interface will present BViewController, which makes me very confused. I want to know how to make BViewController pop up only on CustomViewController, but not on other interfaces.