如何使用导航组件从一个活动导航到另一个活动，并从堆栈中删除第一个活动?
问题描述：
在我的应用程序中，我有两个活动(AuthenticationActivity和MainActivity)，每个活动都有一个导航图和大量片段.我创建了一个动作，可以从AuthenticationActivity的图形片段导航到MainActivity，但是即使将"popTo"设置为Authentication graph id，它也不会从堆栈中删除AuthenticationActivity.
In my app I have two activities (AuthenticationActivity and MainActivity), each one with a nav graph and a big flow of fragments. I've created an action to navigate from a fragment of the AuthenticationActivity's graph to the MainActivity but it does not remove the AuthenticationActivity from the stack even if I set 'popTo' to the Authentication graph id.
答
在导航方法之后完成身份验证活动:
finish authentication activity after navigate method:
button2.setOnClickListener {
view.findNavController().navigate(R.id.action_addItemFragment_to_mainActivity)
(activity as AuthenticationActivity).finish()
}