How to handle back button when at the starting destination of the navigation component

Question

I\'ve started working with the new navigation component and I\'m really digging it! I do have one issue though - How am I supposed to handle the back button when I\'m at the

Answer 1

You shouldn't override "onBackPressed", you should override "onSupportNavigateUp" and put there

findNavController(this, R.id.my_nav_host_fragment)
            .navigateUp()

From the official documentation: You will also overwrite AppCompatActivity.onSupportNavigateUp() and call NavController.navigateUp

https://developer.android.com/topic/libraries/architecture/navigation/navigation-implementing