突然间,我的应用程序中的导航不知从哪里就不能用了(昨天还能用)。
下面是一个例子:当我从userLoggedInFragment
导航到userLoggedOutFragment
时,使用参数app:popUpTo="@id/userLoggedOutFragment" app:popUpToInclusive="true"
,然后单击"后退"按钮,即使我使用popUpTo,它仍然会将我导航回userLoggedInFragment。
I/NavController: Ignoring popBackStack to destination com.example.app:id/userLoggedOutFragment as it was not found on the current back stack
这是我的代码片段
用户记录的输入片段
@AndroidEntryPoint
class UserLoggedInFragment : Fragment() {
private var _binding: FragmentUserLoggedInBinding? = null
private val binding: FragmentUserLoggedInBinding get() = _binding!!
private val viewModel: LogoutViewModel by viewModels()
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
_binding = FragmentUserLoggedInBinding.inflate(inflater, container, false)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
binding.lifecycleOwner = viewLifecycleOwner
binding.btnLogout.btnNext.setOnClickListener {
findNavController().navigate(
UserLoggedInFragmentDirections.actionUserLoggedInFragmentToUserLoggedOutFragment()
)
}
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
}
导航图
<fragment
android:id="@+id/userLoggedInFragment"
android:name="com.example.app.framework.ui.view.fragment.user.UserLoggedInFragment"
tools:layout="@layout/fragment_user_logged_in">
<action
android:id="@+id/action_userLoggedInFragment_to_userLoggedOutFragment"
app:destination="@id/userLoggedOutFragment"
app:popUpTo="@id/userLoggedOutFragment"
app:popUpToInclusive="true" />
</fragment>
我在许多其他片段中也有这一点,我使用popupto和popuptoincluse ="true"。我做错了什么?
1条答案
按热度按时间nmpmafwu1#
我找到了解决办法:问题是我不应该弹出到我导航到的同一个目的地,因为这个片段永远不会出现在backstack中。相反,当点击back按钮时,你应该popTo你想要显示的片段。在我的例子中,这是我的startdestination aka. homeFragment: