我解决了同样的问题，把检查之前导航，而不是样板代码点击即时控制

 if (findNavController().currentDestination?.id == R.id.currentFragment) {
        findNavController().navigate(R.id.action_current_next)}
/* Here R.id.currentFragment is the id of current fragment in navigation graph */

根据这个答案

https://stackoverflow.com/a/56168225/7055259

如果你使用的是recyclerview，只需在你的点击上添加一个点击监听器冷却时间，并在你的recyclerview xml文件中使用android:splitMotionEvents="false"

在我的案例中，错误发生是因为我在启动画面后启用了带有Single Top和Clear Task选项的导航操作。

更新的@Alex坚果解决方案

如果没有特定片段的操作，并希望导航到片段

fun NavController.navigateSafe(
@IdRes actionId: Int, @IdRes fragmentId: Int, args: Bundle? = null,
navOptions: NavOptions? = null, navExtras: Navigator.Extras? = null) 
{
  if (actionId != 0) {
      val action = currentDestination?.getAction(actionId) ?: graph.getAction(actionId)
      if (action != null && currentDestination?.id != action.destinationId) {
          navigate(actionId, args, navOptions, navExtras)
    }
    } else if (fragmentId != 0 && fragmentId != currentDestination?.id)
        navigate(fragmentId, args, navOptions, navExtras)
}

发生此错误可能是因为您将目标屏幕分配给了错误的图形

您可以在导航之前检查请求导航的Fragment是否仍然是当前目的地，从这个要点出发。

它基本上是在片段上设置一个标记，以便稍后进行查找。

/**
 * Returns true if the navigation controller is still pointing at 'this' fragment, or false if it already navigated away.
 */
fun Fragment.mayNavigate(): Boolean {

    val navController = findNavController()
    val destinationIdInNavController = navController.currentDestination?.id
    val destinationIdOfThisFragment = view?.getTag(R.id.tag_navigation_destination_id) ?: destinationIdInNavController

    // check that the navigation graph is still in 'this' fragment, if not then the app already navigated:
    if (destinationIdInNavController == destinationIdOfThisFragment) {
        view?.setTag(R.id.tag_navigation_destination_id, destinationIdOfThisFragment)
        return true
    } else {
        Log.d("FragmentExtensions", "May not navigate: current destination is not the current fragment.")
        return false
    }
}

R.id。Tag_navigation_destination_id只是一个id，必须添加到ids.xml中，以确保它是唯一的。<item name="tag_navigation_destination_id" type="id" />

更多关于bug和解决方案的信息，以及navigateSafe(…)扩展方法在“修复可怕的”…是未知的NavController”