Bad backstack management

Backstack.java

public void addSubscreen(Fragment fragment) {
    getSupportManager()
        .beginTransaction()
        .replace(R.id.container, fragment)
        .addToBackStack(null)
        .commit();
    subscreensOnTheStack++;
}


public void popOffSubscreens() {
    while (subscreensOnTheStack > 0) {
        fragments.popBackStackImmediate();
    }
}