Flutter[Android]:无法发布具有管理外部存储权限的应用程序

Dha*_*ara 14 android dart android-external-storage flutter

我们需要允许用户将文件存储在外部存储中,为此,我们MANAGE_EXTERNAL_STORAGE在应用程序中使用权限。

理想情况下,我们正在使用 Android SDK 版本 30 及以上版本,Permission.manageExternalStorage并使用Permission.storage低于 30 的 Android SDK 版本,如下面的代码所示

  // This func is added to access scope storage to export csv files
  static Future<bool> externalStoragePermission(BuildContext context) async {
    final androidVersion = await DeviceInfoPlugin().androidInfo;

    if ((androidVersion.version.sdkInt ?? 0) >= 30) {
      return await checkManageStoragePermission(context);
    } else {
      return await checkStoragePermission(context);
    }
  }

  static Future<bool> checkManageStoragePermission(BuildContext context) async {
    return (await Permission.manageExternalStorage.isGranted ||
        await Permission.manageExternalStorage.request().isGranted);
  }

  static Future<bool> checkStoragePermission(BuildContext context,
      {String? storageTitle, String? storageSubMessage}) async {
    if (await Permission.storage.isGranted ||
        await Permission.storage.request().isGranted) {
      return true;
    } else {
      openBottomSheet(
        title: storageTitle ?? Str.of(context).storagePermissionRequired,
        message: storageSubMessage ?? Str.of(context).storageSubMessage,
      ).show(context);
      return false;
    }
  }
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通过上述实现,在开发和内部发布时一切正常,但 Google Play 控制台拒绝了该应用程序并出现以下拒绝(我们还提交了原因以及管理存储权限)。

在此输入图像描述

Dha*_*ara 0

我在我的项目中找到并应用了以下解决方案来解决上述问题。

  1. 我们必须使用SAF(存储访问框架)来代表存储权限shared_storage,这将允许我们授予共享存储中特定目录的权限,并且我们可以将文件存储在那里。我还添加了下面相同的代码示例。
  Future<void> exportFile({
    required String csvData,
    required String fileName,
  }) async {
    Uri? selectedUriDir;
    final pref = await SharedPreferences.getInstance();
    final scopeStoragePersistUrl = pref.getString('scopeStoragePersistUrl');
   
    // Check User has already grant permission to any directory or not
    if (scopeStoragePersistUrl != null &&
        await isPersistedUri(Uri.parse(scopeStoragePersistUrl)) &&
        (await exists(Uri.parse(scopeStoragePersistUrl)) ?? false)) {
      selectedUriDir = Uri.parse(scopeStoragePersistUrl);
    } else {
      selectedUriDir = await openDocumentTree();
      await pref.setString('scopeStoragePersistUrl', selectedUriDir.toString());
    }
    if (selectedUriDir == null) {
      return false;
    }
    try {
      final existingFile = await findFile(selectedUriDir, fileName);
      if (existingFile != null && existingFile.isFile) {
        debugPrint("Found existing file ${existingFile.uri}");
        await delete(existingFile.uri);
      }
      final newDocumentFile = await createFileAsString(
        selectedUriDir,
        mimeType: AppConstants.csvMimeTypeWhileExport,
        content: csvData,
        displayName: fileName,
      );
      return newDocumentFile != null;
    } catch (e) {
      debugPrint("Exception while create new file: ${e.toString()}");
      return false;
    }
  }
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