相关疑难解决方法(0)

我通过以下方式在屏幕“A”中收到 uri：

val launcher = rememberLauncherForActivityResult(ActivityResultContracts.StartActivityForResult()) { activityResult ->
        if(activityResult.resultCode == Activity.RESULT_OK) {
            val uri = activityResult.data?.data!!
            context.contentResolver.takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION)
            viewModel.onUriReceived(uri)
        }
    }
LaunchedEffect(launcher) {
     val intent = Intent(Intent.ACTION_OPEN_DOCUMENT, MediaStore.Video.Media.EXTERNAL_CONTENT_URI).apply {
         addCategory(Intent.CATEGORY_OPENABLE)
         type = "video/*"
         addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
         addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
     }
     coroutineScope.launch {
         launcher.launch(intent)
     }
  }

我可以在屏幕“A”中打开 uri，但如果我将 uri 传递到屏幕“B”，我会收到：

 java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaDocumentsProvider uri content://com.android.providers.media.documents/document/video:38 from pid=6074, uid=10146 requires that you obtain access using ACTION_OPEN_DOCUMENT or related APIs
        at android.os.Parcel.createExceptionOrNull(Parcel.java:2425)
        at android.os.Parcel.createException(Parcel.java:2409)
        at android.os.Parcel.readException(Parcel.java:2392)
        at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:190)
        at android.database.DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(DatabaseUtils.java:153)
        at android.content.ContentProviderProxy.openTypedAssetFile(ContentProviderNative.java:780)
        at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:2027) …

我正在为我的应用程序开发购物车功能。我希望分别添加/减少 LazyColumn 中每个列表项的数量。我只使用一个“记住”，因此如果我单击添加/减少，它们都会同时更新。如何单独控制每个项目？

截屏

@Composable
fun InventoryCartScreen(
    mainViewModel: MainViewModel = hiltViewModel()
) {

    val multiSelectValue = mutableStateOf(0)// This is the value I want to change

//random list
val shopList = listOf(
        ShoppingList(id = 0,itemNumber = "1",itemDescription = "1",currentInventory = 0,optimalInventory = 0,minInventory = 0),
        ShoppingList(id = 0,itemNumber = "2",itemDescription = "2",currentInventory = 0,optimalInventory = 0,minInventory = 0)
    )

    Column(...) {
       LazyColumn(...) {
            items(items = shopList, key = { it.id }) { item ->
                InventoryCartScreenContents(
                    onaddClick= { multiSelectValue.value ++ }, //adds …