Question

我有一个带有navGraph的活动和一个带有2个菜单项的底部导航栏。我的问题是，我的底部导航栏随处可见，detailFragment，aboutFragment，signInFragment等。


        val navController = this.findNavController(R.id.myNavHostFragment)

        val appBarConfiguration = AppBarConfiguration.Builder(
            R.id.contactsFragment,
            R.id.profileFragment
        ).build()

        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration)

        val navView: BottomNavigationView = findViewById(R.id.nav_view)
        NavigationUI.setupWithNavController(navView, navController)

我如何将其限制为仅显示在菜单项的2个片段上？

这就是我的解决方法

    navController.addOnDestinationChangedListener{ _, nd: NavDestination, _->
        if(nd.id == R.id.contactsFragment || nd.id == R.id.profileFragment){
            navView.visibility = View.VISIBLE
        }else{
            navView.visibility = View.GONE
        }

Answer 1

对于您应该在其中可见的片段

navView.visibility = View.VISIBLE

在不应该看到的地方

navView.visibility = View.GONE

如何在某些片段中隐藏底部导航栏？

1 个答案: