Navigate to fragment on FAB click (Navigation Architecture Components)

Question

I have no idea how to, using the new navigation architecture component, navigate from my main screen (with a FloatingActionButton attatched to a BottomApp

Answer 1

You could have your BottomAppBar in MainActivity and access your FloatingActionButton in your fragment as follows

activity?.fab?.setOnClickListener { 
    /*...*/
    findNavController().navigate(R.id.action_firstFragment_to_secondFragment, mDataBundle)
}

You could hide the BottomAppBar from another activity as follows

(activity as AppCompatActivity).supportActionBar?.hide()

Make sure you .show() the BottomAppBar while returning to previous fragment