Kotlin 在片段中隐藏 appbarlayout

Question

我有 1 个活动和 4 个附加到它的片段。我的活动中有一个 appbarlayout。我的目标是在某些片段中隐藏这个 appbarlayout。可能吗？我应该怎么写代码？

活动.kt

val navController = this.findNavController(R.id.newsNavHostFragment)
        NavigationUI.setupActionBarWithNavController(this, navController)
        bottomNavigationView.setupWithNavController(newsNavHostFragment.findNavController())

Answer 1

navController.addOnDestinationChangedListener { _, destination, _ ->
   //if you want to handle multiple fragments use switch instead of if.
   if(destination.id == R.id.full_screen_destination) {
        //current Fragment is the fragment you want and do what ever you want with the appBar 
   } else {
       //current Fragment is not the fragment you want
   }
}