java.lang.IllegalArgumentException:重新创建Activity时，此NavController未知导航目的地{actionId}吗? [英] java.lang.IllegalArgumentException: navigation destination {actionId} is unknown to this NavController when Activity is recreated?

问题描述

我来自阅读 IllegalArgumentException中的所有答案:该NavController未知导航目的地xxx ，但运气不佳.从手动recreate()调用重新创建活动或从流程终止返回活动时，我得到了这个提示.

I am coming from reading all the answers in IllegalArgumentException: navigation destination xxx is unknown to this NavController with no luck. I am getting this when the activity is recreated from either a manual recreate() call or coming back from a process death.

我有一个 Activity ，可以使用 Navigation 更改其 Fragments .片段A具有一个FAB，单击该FAB即可导航到片段B.

I have an Activity that changes its Fragments using Navigation. Fragment A has a FAB that navigates to Fragment B when clicked.

   floatingActionButton = view.findViewById<FloatingActionButton>(R.id.floating_action_button).apply {
       setOnClickListener {
           findNavController().navigate(R.id.action_fragmentA_to_fragmentB,
              null,
              null,
              FragmentNavigatorExtras(this to "shared_element_container"))
       }
   }

工作正常，但是在重新创建活动后单击FAB时，我会崩溃.

Works fine but when the FAB is clicked after the activity is recreated I get a crash.

推荐答案

结果是我不小心给嵌套图和片段赋予了相同的ID.

Turns out I had accidentally given the same id to a nested graph and a fragment.

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