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)。
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。
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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