javaandroidandroid-navigationandroid-navigationview

How to find navcontroller with view binding?

I am using view binding in my app. But now I am facing issue with finding navcontroller with view binding.

If I use traditional way to set content view with layout, I can easily find navcontroller with this piece of code.

Navigation.findNavController(this, R.id.nav_host_fragment)

But if I use view binding to set content view how can I find navcontroller since the above code requires ID of navHostFragment but view bending returns fragment if I give binding.navHostFragment

Solution

  • ViewBinding, As its name implies, is used to bind views not to bind resource identifiers.

    What ViewBinding offers you in its simple form, that you don't have to findViewById(view_id) anymore; instead it offers binding.myView.. Both cases returns a view.

    But in the NavController context, you don't have to get a view (but a resource id), so that view binding won't benefit you (again because it binds views not ids).

    So, you will have to use the same code to get the NavController:

    Navigation.findNavController(this, R.id.nav_host_fragment)