How To Use Findnavcontroller() In Activity

I want to change fragment by using navigation component but I want to change fragment from activity. How can I change fragment from activity? tab_layout.addOnTabSelectedListener(ob

Solution 1:

NavController is used to navigate from one destination to another destination which can be retrieved by following one of the static methods :

NavHostFragment.findNavController(Fragment)
Navigation.findNavController(Activity, @IdRes int viewId)
Navigation.findNavController(View)

After retrieving a NavController, use the navigate() method to navigate to the destination. The navigate() method which accepts Resource Id. The ID can be the ID of a specific destination in the navigation graph or of an action. Using the ID of the action, instead of the resource ID of the destination. For example,

Navigation.findNavController(this, R.id.my_nav_host_fragment).navigate(R.id.action_navigationFragment_to_blankFragment)