Floating action button will not disappear when going to another fragment

Question

I built a project based on Scrolling Activity, and faced a strange issue. Consider the following scenario:

I click on fab button to go

Answer 1

I had the same problem. I called the .hide() method on the FragmentTransaction and it worked for me.

fab.setOnClickListener {
        val fragmentManager = fragmentManager
        val fragmentTransaction = fragmentManager?.beginTransaction()
        val fragment = YourFragment()
        fragmentTransaction?.add(R.id.fragment_container, fragment)
        fragmentTransaction?.addToBackStack(null)
        fragmentTransaction?.hide(this)
        fragmentTransaction?.commit()
    }