片段导航错误Android 13

Question

因此，基本上，我有一个应用程序，通过使用片段之间的NavController导航，在不同的片段之间移动。这适用于所有Android版本< 13。

findNavController().navigate(R.id.step02Fragment)

Step05Fragment的Android 13上的问题是，当我从Step05Fragment迁移到Step06Fragment时，onPause和onResume方法开始永远执行，从而导致StackOverflow错误。

我不知道为什么这两个步骤和这个特定的Android版本之间会发生这种情况。所有其他片段也以完全相同的方式进行导航，并且这个问题不会发生在它们身上。

有什么想法吗？

谢谢

这些是库的版本，如果这是其中任何一个已知的问题

implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.5.1"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
implementation "androidx.lifecycle:lifecycle-service:2.5.1"

implementation "androidx.navigation:navigation-runtime-ktx:2.5.2"
implementation "androidx.navigation:navigation-fragment-ktx:2.5.2"
implementation "androidx.navigation:navigation-ui-ktx:2.5.2"
implementation "androidx.navigation:navigation-dynamic-features-fragment:2.5.2"

以下是片段的代码

@AndroidEntryPoint
class Step05Fragment : Fragment() {

    lateinit var binding: FragmentStep05Binding

    private var initialSetup: Boolean = true
    private val disposable = CompositeDisposable()

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        binding = FragmentStep05Binding.inflate(inflater, container, false)
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        arguments?.getBoolean(Constants.ENABLE_PERMISSION)?.let {
            initialSetup = it
        }

        setObservables()
        setView()
    }

    override fun onDestroy() {
        super.onDestroy()
        disposable.dispose()
    }

    private fun setObservables() {
        binding.btnEnable.clicks()
            .map {
                checkPermission()
            }
            .subscribe()
            .disposeBy(disposable)
    }

    private fun setView() {
        if (!initialSetup) {
            binding.currentStep.visibility = View.GONE
        }
    }

    private fun checkPermission() {
        if (!PermissionsUtils.isReadExternalStoragePermissionGranted(requireContext())) {
            requestPermission.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
        } else {
            handleNavigation()
        }
    }

    private val requestPermission =
        registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
            if (isGranted) {
                handleNavigation()
            } else {
                checkPermission()
            }
        }

    private fun handleNavigation() {
        if (initialSetup) {
            findNavController().navigate(R.id.step06Fragment)
        } else {
            activity?.finishAffinity()
        }
    }

}

@AndroidEntryPoint
class Step06Fragment : Fragment() {

lateinit var binding: FragmentStep06Binding

private var initialSetup: Boolean = true
private val disposable = CompositeDisposable()

override fun onCreateView(
    inflater: LayoutInflater,
    container: ViewGroup?,
    savedInstanceState: Bundle?
): View {
    binding = FragmentStep06Binding.inflate(inflater, container, false)
    return binding.root
}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)

    arguments?.getBoolean(Constants.ENABLE_PERMISSION)?.let {
        initialSetup = it
    }

    setObservables()
    setView()
}

override fun onDestroy() {
    super.onDestroy()
    disposable.dispose()
}

private fun setObservables() {
    binding.btnEnable.clicks()
        .map {
            checkPermission()
        }
        .subscribe()
        .disposeBy(disposable)
}

private fun setView() {
    if (!initialSetup) {
        binding.currentStep.visibility = View.GONE
    }
}

private fun checkPermission() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        if (!PermissionsUtils.isMediaLocationPermissionGranted(requireContext())) {
            requestPermission.launch(Manifest.permission.ACCESS_MEDIA_LOCATION)
        } else {
            handleNavigation()
        }
    } else {
        handleNavigation()
    }
}

private val requestPermission =
    registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
        if (isGranted) {
            handleNavigation()
        } else {
            checkPermission()
        }
    }

private fun handleNavigation() {
    if (initialSetup) {
        findNavController().navigate(R.id.step07Fragment)
    } else {
        activity?.finishAffinity()
    }
}

Answer 1

过了一会儿，找到了答案

https://developer.android.com/about/versions/13/behavior-changes-13#granular-media-permissions

看起来这种奇怪的行为就是因为这个原因，在更新了我的项目依赖关系以使Android 13为目标之后，添加了下面的验证，并且它运行得很好。

private fun checkPermission() {
        if (!PermissionsUtils.isReadExternalStoragePermissionGranted(requireContext())) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
                requestPermission.launch(Manifest.permission.READ_MEDIA_IMAGES)
            } else {
                requestPermission.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
            }
        } else {
            handleNavigation()
        }
    }

Answer 2

这可以与绑定相关！我以前有过一些约束问题。您可以尝试将其更改为旧的findViewById或其他方式吗？