Attempt to invoke virtual method 'int io.ak1.Bubble.getId()' on a null object reference

[Kadon]

My app implement navigation controller. I got this error when try to navigate to another fragment within navigation graph.
My first MovieFragment has deep link to MovieDetailFragment.

Error log :

java.lang.NullPointerException: Attempt to invoke virtual method 'int io.ak1.Bubble.getId()' on a null object reference
        at io.ak1.BubbleTabBar.setSelectedWithId(BubbleTabBar.kt:69)
        at com.kadon.moviebasejetpack.MainActivity.onCreate$lambda-1(MainActivity.kt:40)
        at com.kadon.moviebasejetpack.MainActivity.lambda$m7AD07XFDrhvcoED8pyMVzjbbRU(Unknown Source:0)
        at com.kadon.moviebasejetpack.-$$Lambda$MainActivity$m7AD07XFDrhvcoED8pyMVzjbbRU.onDestinationChanged(Unknown Source:2)
        at androidx.navigation.NavController.dispatchOnDestinationChanged(NavController.java:504)
        at androidx.navigation.NavController.navigate(NavController.java:1149)
        at androidx.navigation.NavController.navigate(NavController.java:944)
        at androidx.navigation.NavController.navigate(NavController.java:877)
        at androidx.navigation.NavController.navigate(NavController.java:863)
        at com.kadon.moviebasejetpack.ui.movie.MovieFragment.onClickedCharacter(MovieFragment.kt:56)

This is my MainActivity :

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

        val bubble = binding.bubbleTabBar

        val navHostFragment = supportFragmentManager.findFragmentById(
            R.id.nav_host_fragment_activity_main
        ) as NavHostFragment
        navController = navHostFragment.navController

        appBarConfiguration = AppBarConfiguration(navController.graph)
        setupActionBarWithNavController(navController, appBarConfiguration)

        bubble.addBubbleListener { id ->
            bubble.onNavDestinationSelected(id, navController)
        }

        navController.addOnDestinationChangedListener { _, destination, _ ->
            bubble.setSelectedWithId(destination.id, false)
        }

    }

This HomeFragment list onclick listner :

private fun onClickedCharacter(id: Int) {
        findNavController().navigate(
            R.id.action_navigation_movie_to_navigation_movie_detail,
            bundleOf("id" to id)
        )
    }

[Akshay Sharma]

Hello @heskadon
This is crashing because on navigating to detail page
bubble.setSelectedWithId(destination.id, false) is getting called in addOnDestinationChangedListener
and as there is no view with id R.id.action_navigation_movie_to_navigation_movie_detail in BubbleTabBar viewgroup.
This is resolved in the new version 1.0.8
implementation 'io.ak1:bubbletabbar:1.0.8'

[Kadon]

Yes thanks for 1.0.8 and for the io.ak1:bubbletabbar:1.0.7
you can do :

val destinationId: Int =
               when (destination.id) {
                    R.id.navigation_inner_fragment -> {
                        R.id.navigation_start_fragment
                    }
              ......................................
                    else -> {
                        destination.id
                    }
}