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

Override onBackPressed in your activity and check if the current destination is the start destination or not.

Practically it looks like this:

@Override
public void onBackPressed() {
    if (Navigation.findNavController(this,R.id.nav_host_fragment)
            .getCurrentDestination().getId() == R.id.your_start_destination) {
        // handle back button the way you want here
        return;
    }
    super.onBackPressed();
}