我在一个fragment用replace方法跳转到另外一个fragment，然后用底部导航回到主页结果这个fragment依旧存在 要怎么处理？

1. 我是用google自带的 Bottom navigation activirty, 然后我在home里面加了一个button用replace的方法跳转到新的fragment， 在用底部导航回去结果还在背后

这是main activity的方法

        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
                .build();


        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
        NavigationUI.setupWithNavController(navView, navController);

这是跳转我用的方法

public void replaceFragment(Fragment newFragment){
            FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.nav_host_fragment,newFragment).commit();
        }

https://blog.csdn.net/chw12341/article/details/77744416?utm_source=blogxgwz0

https://www.cnblogs.com/shmilyGWT/p/7762769.html

https://www.jianshu.com/p/0fdcf5bc0d7e