重写 onNavigationItemSelected 停止导航到 drawerLayout 中项目单击的片段

Question

覆盖 onNavigationItemSelected 会停止在项目单击时打开片段的导航组件功能，而是调用 onNavigationItemSelected 并且不会发生其他任何事情。

创建时调用的导航视图设置

    private fun setupNavigationDrawer(){

        NavigationUI.setupWithNavController(binding.navigationView,navHostFragment.findNavController())
        binding.navigationView.setNavigationItemSelectedListener(this)


    }

活动

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

    }

导航查看 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>

我已将菜单项 ID 设置为导航片段 ID，它在没有设置 onNavigationItemSelected 的情况下工作我还在 xml 中的片段容器下方有导航视图

我尝试过了

-更改返回值 onNavigationItemSelected -在 setupWithNavController 之前设置 onNavigationItemSelected 侦听器，这导致侦听器根本没有被调用

Answer 1

最后我通过手动打开片段解决了它

从

    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

}

到

    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
}