Error inflating class layout with fragment - android-studio

Question

I'm trying to show BreakingNewsFragment through news activity using navigation
but the error is show
I am getting this error when trying to run this app. I have followed numerous guides to no avail. I am just trying to do the simplist exercise with navigation
Caused by: android.view.InflateException: Binary XML file line #20 in com.example.newsapp:layout/activity_news: Binary XML file line #20 in com.example.newsapp:layout/activity_news: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #20 in com.example.newsapp:layout/activity_news: Error inflating class fragment
Caused by: kotlin.UninitializedPropertyAccessException: lateinit property newsViewModel has not been initialized
at com.example.newsapp.ui.activity.NewsActivity.getNewsViewModel(NewsActivity.kt:17)
at com.example.newsapp.ui.fragments.BreakingNewsFragment.onViewCreated(BreakingNewsFragment.kt:29)
newsActivity:
class NewsActivity : AppCompatActivity() {
lateinit var newsViewModel: NewsViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_news)
var newsRepository = NewsRepository(ArticleDataBase(this))
var newsViewModelFactoryProvider = NewsViewModelFactory(newsRepository)
newsViewModel = ViewModelProvider(this,newsViewModelFactoryProvider).get(NewsViewModel::class.java)
bottomNavigationView.setupWithNavController(navHostFragmentNews.findNavController())
}}
when to get newsViewModel from activity the error is show
in fragment:
class BreakingNewsFragment : Fragment(R.layout.fragment_breaking_news) {
lateinit var newsViewModel : NewsViewModel
lateinit var articleRecyclerAdapter: ArticleRecyclerAdapter
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
newsViewModel = (activity as NewsActivity).newsViewModel
setupRecyclerView()
}
fun setupRecyclerView(){
articleRecyclerAdapter= ArticleRecyclerAdapter()
rvBreakingNews.adapter= articleRecyclerAdapter
}}
xml code:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.activity.NewsActivity">
<FrameLayout
android:id="#+id/flFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#+id/bottomNavigationView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<fragment
android:name="androidx.navigation.fragment.NavHostFragment"
android:id="#+id/navHostFragmentNews"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:navGraph="#navigation/nav_graph_news"/>
</FrameLayout>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottomNavigationView"
android:layout_width="match_parent"
android:layout_height="56dp"
app:menu="#menu/menu_bottom_navigation_news"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
i use many fragment other it ,with them no any problem
why the error come in this fragment

Answer 1

you are initializing the newsViewModel after doing setContentView. So the fragment gets created before that. Try moving setContentView down, like this:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
var newsRepository = NewsRepository(ArticleDataBase(this))
var newsViewModelFactoryProvider = NewsViewModelFactory(newsRepository)
newsViewModel = ViewModelProvider(this,newsViewModelFactoryProvider).get(NewsViewModel::class.java)
setContentView(R.layout.activity_news)
bottomNavigationView.setupWithNavController(navHostFragmentNews.findNavController())
}}