overriding onNavigationItemSelected stops navigation component functionality of opening fragments on item click, instead it calls onNavigationItemSelected and nothing else happens.
navigation view setup called in on create
private fun setupNavigationDrawer(){
NavigationUI.setupWithNavController(binding.navigationView,navHostFragment.findNavController())
binding.navigationView.setNavigationItemSelectedListener(this)
}
activity
class MainActivity : AppCompatActivity(),NavigationView.OnNavigationItemSelectedListener
onNavigationItemSelected
override fun onNavigationItemSelected(item: MenuItem): Boolean {
if(binding.mainActivityRootView.isDrawerOpen(GravityCompat.END)){
binding.mainActivityRootView.closeDrawer(GravityCompat.END)
}
else if(binding.mainActivityRootView.isDrawerOpen(GravityCompat.START)){
binding.mainActivityRootView.closeDrawer(GravityCompat.START)
}
return true
}
Navigation view xml
<com.google.android.material.navigation.NavigationView
android:id="@+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:menu="@menu/menu_home_navigation_drawer"
android:paddingStart="15dp"
android:paddingEnd="15dp"
app:headerLayout="@layout/layout_navigation_drawer_header"
app:itemIconTint="@color/lipstick"
android:layout_gravity="end"
app:drawerLayoutCornerSize="10dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" >
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom"
android:layout_marginBottom="40dp"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_main_blue"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:tint="@color/lipstick" />
<TextView
android:id="@+id/textView41"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/montserratmedium"
android:text="Version IMPLEMENT"
android:textColor="@color/pinkish_grey"
android:textSize="10sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.navigation.NavigationView>
i have set menu item id as navigation fragment id and it works without the onNavigationItemSelected being set i also have navigation view below fragment container in xml
i tried to
-change return value onNavigationItemSelected -setting up onNavigationItemSelected listener before setupWithNavController which results in the listener not getting called at all
In the end i solved it by manually opening fragments
from
override fun onNavigationItemSelected(item: MenuItem): Boolean {
if(binding.mainActivityRootView.isDrawerOpen(GravityCompat.END)){
binding.mainActivityRootView.closeDrawer(GravityCompat.END)
}
else if(binding.mainActivityRootView.isDrawerOpen(GravityCompat.START)){
binding.mainActivityRootView.closeDrawer(GravityCompat.START)
}
return true
}
to
override fun onNavigationItemSelected(item: MenuItem): Boolean {
if(binding.mainActivityRootView.isDrawerOpen(GravityCompat.END)){
binding.mainActivityRootView.closeDrawer(GravityCompat.END)
}
else if(binding.mainActivityRootView.isDrawerOpen(GravityCompat.START)){
binding.mainActivityRootView.closeDrawer(GravityCompat.START)
}
when(item.itemId){
else ->{
NavigationUI.onNavDestinationSelected(item,navHostFragment.findNavController())
}
}
return true
}