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FileSystemException: Cannot retrieve length of file,(OS Error: No such file or directory, errno = 2) #261

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shahnawazahmed88 opened this issue Apr 29, 2020 · 44 comments
Closed

FileSystemException: Cannot retrieve length of file,(OS Error: No such file or directory, errno = 2) #261

shahnawazahmed88 opened this issue Apr 29, 2020 · 44 comments
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triage Further information is requested

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@shahnawazahmed88
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Getting, Unhandled Exception: FileSystemException: Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/0C1997E5-5243-494E-85EA-830E3248CC97/tmp/com.vassar.bluis-Inbox/https:%2Ffoodlicensing.fssai.gov.in%2FREG%2FRG_ViewReceipt.aspx?ReqID=68198366.pdf' (OS Error: No such file or directory, errno = 2)

in Android its working fine but in iOS 13.4 real device getting above exception

Issue details

  1. Platform - iOS
  2. Platform OS version - 13.4
  3. File type (filter) — pdf
  4. Detailed steps to reproduce
    Working fine in android, select any pdf file and try to upload to server in iOS real device 13.4

Error Log

2020-04-29 15:56:04.991427+0530 Runner[4358:1416983] [VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: FileSystemException: Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/0C1997E5-5243-494E-85EA-830E3248CC97/tmp/com.vassar.bluis-Inbox/https:%2Ffoodlicensing.fssai.gov.in%2FREG%2FRG_ViewReceipt.aspx?ReqID=68198366.pdf' (OS Error: No such file or directory, errno = 2)
#0 _File.length. (dart:io/file_impl.dart:376:9)
#1 _rootRunUnary (dart:async/zone.dart:1134:38)
#2 _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#3 _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
#4 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
#5 Future._propagateToListeners (dart:async/future_impl.dart:709:32)
#6 Future._completeWithValue (dart:async/future_impl.dart:524:5)
#7 Future._asyncComplete. (dart:async/future_impl.dart:554:7)
#8 _rootRun (dart:async/zone.dart:1126:13)
#9 _CustomZone.run (dart:async/zone.dart:1023:19)
#10 _CustomZone.runGuarded (dart:async/zone.dart:925:7)
#11 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:965:23)
#12 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#13 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)

Flutter Version details
[✓] Flutter (Channel stable, v1.12.13+hotfix.9, on Mac OS X 10.15.4 19E287,
locale en-IN)
• Flutter version 1.12.13+hotfix.9 at /Users/teja/flutter_dev/flutter
• Framework revision f139b11009 (4 weeks ago), 2020-03-30 13:57:30 -0700
• Engine revision af51afceb8
• Dart version 2.7.2

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
• Android SDK at /Users/teja/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling
support)
• Platform android-29, build-tools 29.0.2
• Java binary at: /Applications/Android
Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build
1.8.0_202-release-1483-b49-5587405)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.4.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 11.4.1, Build version 11E503a
• CocoaPods version 1.9.1

[✓] Android Studio (version 3.5)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 42.1.1
• Dart plugin version 191.8593
• Java version OpenJDK Runtime Environment (build
1.8.0_202-release-1483-b49-5587405)

[✓] Connected device (1 available)
• Shahnawaz’s iphone • d59a055eb9bbddc9be958142d9c484e3c45bbf2f • ios • iOS
13.4.1

• No issues found!
@shahnawazahmed88 shahnawazahmed88 added the new issue An issue that hasn't yet been seen from the maintainer label Apr 29, 2020
@miguelpruivo
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@shahnawazahmed88 does that happen with all files or just that one? May I ask you to try with another one? Thanks.

@miguelpruivo miguelpruivo added triage Further information is requested and removed new issue An issue that hasn't yet been seen from the maintainer labels Apr 29, 2020
@shahnawazahmed88
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Yeah I tried with another pdf file "A Sample PDF.pdf", got exception

[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: FileSystemException: Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/91C0B3B7-2102-49AE-9647-61904A9DB030/tmp/com.vassar.bluis-Inbox/A Sample PDF.pdf' (OS Error: No such file or directory, errno = 2)

@miguelpruivo
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@shahnawazahmed88 that stack doesn't seem to be coming from the plugin itself but with something that you might be doing afterwards.

May I ask you to post the code/lines where you got the exception? Thank you.

@shahnawazahmed88
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I am not getting line number after this exception occurs, check here complete logs

2020-04-29 16:29:55.398581+0530 Runner[4401:1425062] [VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: FileSystemException: Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/91C0B3B7-2102-49AE-9647-61904A9DB030/tmp/com.vassar.bluis-Inbox/A Sample PDF.pdf' (OS Error: No such file or directory, errno = 2)
#0 _File.length. (dart:io/file_impl.dart:376:9)
#1 _rootRunUnary (dart:async/zone.dart:1134:38)
#2 _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#3 _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
#4 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
#5 Future._propagateToListeners (dart:async/future_impl.dart:709:32)
#6 Future._completeWithValue (dart:async/future_impl.dart:524:5)
#7 Future._asyncComplete. (dart:async/future_impl.dart:554:7)
#8 _rootRun (dart:async/zone.dart:1126:13)
#9 _CustomZone.run (dart:async/zone.dart:1023:19)
#10 _CustomZone.runGuarded (dart:async/zone.dart:925:7)
#11 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:965:23)
#12 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#13 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)

@miguelpruivo
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@shahnawazahmed88 can you post your code where you call the picker? It looks like you are creating a File instance with a wrong path.

@shahnawazahmed88
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void onFileUploadIconClick(String datatype) async {
// File Upload Clicked
String filePath;
/** Can upload image, video, audio, pdf and any other file format in the
* default file finder **/
switch (datatype) {
case "image":
filePath = await FilePicker.getFilePath(
type: FileType.image,
);
break;
case "video":
filePath = await FilePicker.getFilePath(
type: FileType.video,
allowedExtensions: ['mp4'],
);
break;
case "audio":
filePath = await FilePicker.getFilePath(
type: FileType.audio,
allowedExtensions: ['mp3'],
);
break;
case "pdf":
filePath = await FilePicker.getFilePath(
type: FileType.custom,
allowedExtensions: ['pdf'],
);
break;
default:
filePath = await FilePicker.getFilePath(
type: FileType.any,
);
}

if (filePath != null && filePath.isNotEmpty) {
  // Valid file path returned
  // Get file name from the path
  File file = new File(filePath);
  String filename = basename(file.path);

// print("XXXXXXXXXXXXXXXXXXXXXXXXXXX -- File name --" + filename);

  // Generate UUID, use as new filename
  String newFileName = new Uuid().v1();

// print("XXXXXXXXXXXXXXXXXXXXXXXXXXX -- New Name -- $newFileName");

  // Add value to user entered fields map for the form
  formMap.addKeyToFormFieldSubmissionValue(widget.id, CommonConstants.SUBMISSION_OBJECT_VAL, newFileName);

  // Save entry to DB for media sync
  _addFileEntryToMediaTable(filename, newFileName, filePath, "pdf");
  print("filename$filename $newFileName $filePath")
  if (formMap.cameraUuids != null) {
    formMap.cameraUuids.add(newFileName.toString());
  } else {
    formMap.cameraUuids = List();
    formMap.cameraUuids.add(newFileName.toString());
  }
  // Set state to refresh icon
  setState(() {
    iconData = Icons.check;
  });
} else {
  // TODO : Log error
  Toast.show(CommonConstants.NO_FILE_FOUND, context);
}

}

@miguelpruivo
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Add a statement after the switch case and if that prints, it’s nothing related to the picker but with something you’re doing afterwards.

By looking at your first log, I can see that you have a valid file path, hence, it should be ok. Wrap all of that code with a try-catch clause and print both the error and stack trace. You’ll find where it comes from.

@miguelpruivo
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@shahnawazahmed88 have you managed to solve it?

@shahnawazahmed88
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@miguelpruivo here is my complete code, and its working pretty fine with Android devices

import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:path/path.dart';
import 'package:toast/toast.dart';
import 'package:uuid/uuid.dart';
import 'dart:io';

import '../../../db/models/form_media_table.dart';
import '../../../models/app_meta_data_config.dart';
import '../../../ua_app_context.dart';
import '../../../ui/helpers/form_values.dart';
import '../../../ui/themes/color_theme.dart';
import '../../../ui/themes/text_theme.dart';
import '../../../ui/themes/uniapp_css.dart';
import '../../../ui/widgets/formelements/form_transaction_info.dart';
import '../../../utils/common_constants.dart';
import '../../../utils/media_action_type.dart';
import '../../../utils/media_subtype.dart';
import '../../../utils/media_type.dart';
import '../../../utils/media_upload_status.dart';
import '../../../utils/string_utils.dart';

class FormFileUpload extends StatefulWidget {
  final String id;
  final String title;
  final String datatype;
  final String appId;
  final String projectId;
  final String externalProjectId;
  final String uiType;
  final bool showInfo;
  final bool isBorderRequired;

  FormFileUpload({
    this.id,
    this.title,
    this.datatype,
    this.appId,
    this.projectId,
    this.externalProjectId,
    this.uiType,
    this.showInfo,
    this.isBorderRequired,
  });

  @override
  _FileUploadScreenState createState() {
    return _FileUploadScreenState();
  }
}

class _FileUploadScreenState extends State<FormFileUpload> {
  bool _isBorderRequired;
  BuildContext context;
  IconData iconData = Icons.file_upload;

  @override
  void initState() {
    super.initState();
    _isBorderRequired = widget.isBorderRequired;
  }

  @override
  Widget build(BuildContext context) {
    this.context = context;
    if (_isBorderRequired == null) {
      _isBorderRequired = true;
    }
    return Padding(
      padding: _isBorderRequired
          ? UniappCSS.smallHorizontalPadding
          : UniappCSS.largeHorizontalPadding,
      child: Container(
        decoration: BoxDecoration(
          borderRadius: UniappCSS.widgetBorderRadius,
          border: UniappCSS.widgetBorder,
          color: UniappColorTheme.fillColor,
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            Row(
              mainAxisSize: MainAxisSize.max,
              children: <Widget>[
                Expanded(
                  child: Container(
                    padding: UniappCSS.smallHorizontalAndVerticalPadding,
                    child: Text(
                      StringUtils.getTranslatedString(widget.title),
                      style: UniappTextTheme.defaultWidgetStyle,
                    ),
                  ),
                ),
                IconButton(
                  icon: Icon(iconData),
                  iconSize: UniappCSS.largeIconSize,
                  tooltip: "File Upload",
                  color: UniappColorTheme.widgetColor,
                  onPressed: () => onFileUploadIconClick(widget.datatype),
                ),
                TransactionInfoWidget(
                  formFieldKey: widget.id,
                  showInfo: widget.showInfo,
                  formFieldUiType: widget.uiType,
                ),
                SizedBox(
                  width: 8.0,
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }

  void onFileUploadIconClick(String datatype) async {
    // File Upload Clicked
    String filePath;
    /** Can upload image, video, audio, pdf and any other file format in the
     * default file finder **/
    switch (datatype) {
      case "image":
        filePath = await FilePicker.getFilePath(
          type: FileType.image,
        );
        break;
      case "video":
        filePath = await FilePicker.getFilePath(
          type: FileType.video,
          allowedExtensions: ['mp4'],
        );
        break;
      case "audio":
        filePath = await FilePicker.getFilePath(
          type: FileType.audio,
          allowedExtensions: ['mp3'],
        );
        break;
      case "pdf":
        filePath = await FilePicker.getFilePath(
          type: FileType.custom,
          allowedExtensions: ['pdf'],
        );
        break;
      default:
        filePath = await FilePicker.getFilePath(
          type: FileType.any,
        );
    }

    if (filePath != null && filePath.isNotEmpty) {
      // Valid file path returned
      // Get file name from the path
      File file = new File(filePath);
      String filename = basename(file.path);
//      print("XXXXXXXXXXXXXXXXXXXXXXXXXXX -- File name --" + filename);

      // Generate UUID, use as new filename
      String newFileName = new Uuid().v1();
//      print("XXXXXXXXXXXXXXXXXXXXXXXXXXX -- New Name -- $newFileName");

      // Add value to user entered fields map for the form
      formMap.addKeyToFormFieldSubmissionValue(widget.id, CommonConstants.SUBMISSION_OBJECT_VAL, newFileName);

      // Save entry to DB for media sync
      _addFileEntryToMediaTable(filename, newFileName, filePath, "pdf");
      if (formMap.cameraUuids != null) {
        formMap.cameraUuids.add(newFileName.toString());
      } else {
        formMap.cameraUuids = List();
        formMap.cameraUuids.add(newFileName.toString());
      }
      // Set state to refresh icon
      setState(() {
        iconData = Icons.check;
      });
    } else {
      // TODO : Log error
      Toast.show(CommonConstants.NO_FILE_FOUND, context);
    }
  }

  _addFileEntryToMediaTable(String fileName, String newFileName,
      String filePath, String fileExtension) async {
    AppMetaDataConfig appMetaConfig = UAAppContext.getInstance().appMDConfig;
    int retries = CommonConstants.MEDIA_IMAGE_DEFAULT_RETRIES;

    if (appMetaConfig != null &&
        appMetaConfig.mediaretries != null &&
        appMetaConfig.mediaretries != 0) {
      retries = appMetaConfig.mediaretries;
    }

    // Adding filename and externalProjectId to additional properties map
    Map<String, String> additionalProperties = new Map();
    additionalProperties[CommonConstants.EXTERNAL_PROJECT_ID] =
        widget.externalProjectId;
    additionalProperties["fileName"] = fileName;

    FormMediaTable formMedia = new FormMediaTable(
      widget.appId,
      UAAppContext.getInstance().userID,
      newFileName,
      0,
      widget.projectId,
      filePath,
      null,
      false,
      CommonConstants.DEFAULT_LATITUDE,
      CommonConstants.DEFAULT_LONGITUDE,
      CommonConstants.DEFAULT_ACCURACY,
      CommonConstants.DEFAULT_BEARING,
      MediaTypeHelper.getValue(MediaType.PDF),
      MediaSubTypeHelper.getValue(MediaSubType.FULL),
      fileExtension,
      0,
      0,
      MediaActionTypeHelper.getValue(MediaActionType.UPLOAD),
      retries,
      MediaUploadStatusHelper.getValue(MediaUploadStatus.NEW),
      additionalProperties,
    );

    await UAAppContext.getInstance()
        .unifiedAppDBHelper
        .insertFormMedia(formMedia);
  }
}

@miguelpruivo
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Does that happen with another file?

@shahnawazahmed88
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No, I am using Video, and Photo all are working well, except document, but this is also working well in android device, only occurring issue in iOS 13.4 (I am using this one).

@miguelpruivo
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Owner

Sure. But what if you pick a different document on iOS? Could you try it? Does that still happen? Are you on latest Xcode version? I can’t see anything wrong with the code itself, to me looks like it just can’t open a descriptor for that file (probably due to the name or any other particular reason).

@miguelpruivo
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Any news on this?

@shahnawazahmed88
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@miguelpruivo hey bro, everything is done from my side, just one thing I want to try, I want to run my code in lower version of the iOS device, currently I am using iOS 13.4, how it could be? might be this issue with some version-specific?

@shahnawazahmed88 shahnawazahmed88 mentioned this issue May 11, 2020
Closed
@vanshg395
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I am facing same issue on ios

@shahnawazahmed88
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@vanshg395 Hey bro, which iOS version currently you are using now?

@vanshg395
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vanshg395 commented May 11, 2020 •
edited

Ios 13.4, the problem is only occurring with pdf files and that too randomly, sometimes it works, sometimes it doesn’t.

@shahnawazahmed88
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Its a sumilator or real device?

@vanshg395
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vanshg395 commented May 11, 2020 via email

@shahnawazahmed88
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Exactly sometimes is working and sometimes it not, so except pdf file is it working for other documents fine? did you test with the lower version of the iOS device?

@vanshg395
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vanshg395 commented May 11, 2020 via email

@shahnawazahmed88
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For me the same code working nicely in android devices, Bro, let me know if you find any solution for it

@miguelpruivo
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Does that happen to work randomly for the same file? Or different files?

@vanshg395
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vanshg395 commented May 11, 2020 via email

@miguelpruivo
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That’s odd as far as it concerns to picking files from the picker. It only gives you the path and that’s it. It didn’t even tries to open the file. Is it always a pdf? Does that happen with any other type? Could you tell me the name of the file so I can try to replicate it here?

@vanshg395
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vanshg395 commented May 11, 2020 via email

@miguelpruivo
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@vanshg395 can you tell me exactly the name of the file that you are picking? So I can create a file with the same name to replicate it? It will be hard to fix if I cannot reproduce it.

@vanshg395
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vanshg395 commented May 11, 2020 via email

@miguelpruivo
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Have you managed to solve it @vanshg395?

@miguelpruivo
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Closing due to inactivity. Feel free to reopen it if you still experience the same issue on latest versions (plugin and Flutter @ stable channel).

Thank you.

@bergtorresn
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This problem occurs when I select the file and wait some time before making the request to send to the server, when sending capture this error. If I don't wait a while, the problem does not occur.

Here my code:

    try {
      _bloc.path = await FilePicker.getFilePath(
          type: FileType.custom,
          allowedExtensions: ['pdf', 'png', 'jpg', 'jpeg']);

 if (_bloc.path != null && _bloc.path.isNotEmpty) {
      _navigateToAnotherScreen(AnotherScreen(path:_bloc.path));
    }
    } on PlatformException catch (e) {
     // error
    }

On another screen, I just show the content and there is a button to send to the server.

in the button method.

MultipartFile multiPartFile = await MultipartFile.fromFile(_filePath,
           filename: _filePath.split("/").last);

.. create a formData and send it to server.

@miguelpruivo
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@bergtorresn iOS or Android?

@bergtorresn
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@miguelpruivo only iOS

@miguelpruivo
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@bergtorresn yes this is working as expected. Files on iOS that are on tmp directory are only cached briefly and system can actually purge them during app instance (which is odd I know). If you don’t plan to use the file for a while before uploading it, you may want to cache it on your send (it can be done easily).

@bergtorresn
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Do you suggest creating this file locally and using it to upload to the server and delete it?

@miguelpruivo
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@bergtorresn copying to your app’s temporary folder (cache). You don’t need to delete it explicitly afterwards. The system will purge whenever it needs it.

@iury0393
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@miguelpruivo i am trying to cache it the file but without success, how can i do it instead of using the tmp folder? (That is the pattern).

@miguelpruivo
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Using the path provider plugin to get access to documents directory and then making a copy of the file into it or just moving it to there right after picking.

@b1acKr0se
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For anyone looking for the code:

import 'package:path/path.dart' as path;
import 'package:path_provider/path_provider.dart';

File file = File(result.files.single.path);
if (Platform.isIOS) {
  final documentPath = (await getApplicationDocumentsDirectory()).path;
  file = await file.copy('$documentPath/${path.basename(file.path)}');
}
return file;

@brendansiow
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Hi, shall we delete the file after we proceed to upload the file to server using @b1acKr0se caching way?

@b1acKr0se
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@walaoehh If you don't want to care about the file afterwards, you can consider using getTemporaryDirectory() instead of getApplicationDocumentsDirectory(). It seems the system will purge files in this directory at any time, so proceed with caution. If you use getApplicationDocumentsDirectory() it's your responsibility to remove the file after you're done with it.

@Nolan1357 Nolan1357 mentioned this issue Nov 11, 2021
Closed
@SerdarYildiz06
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I am trying to post local phone asset but I am taking "FileSystemException (FileSystemException: Cannot retrieve length of file, path = 'cache/file_picker/IMG_20220428_115542.jpg' (OS Error: Permission denied, errno = 13))". This error. What is the main problem?

@voratham
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voratham commented Mar 22, 2023 •
edited

For anyone looking for the code:

import 'package:path/path.dart' as path;
import 'package:path_provider/path_provider.dart';

File file = File(result.files.single.path);
if (Platform.isIOS) {
  final documentPath = (await getApplicationDocumentsDirectory()).path;
  file = await file.copy('$documentPath/${path.basename(file.path)}');
}
return file;

👏 🎉 It'work for me
i have using on flutter 3.3.0 version with IOS 15.7.3 real-device and library file_picker = 5.2.5

@omarmgerbie
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guys can you check this answer its describing the issue and a good workaround for it

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10 participants
@b1acKr0se @bergtorresn @shahnawazahmed88 @brendansiow @iury0393 @miguelpruivo @voratham @vanshg395 @SerdarYildiz06 @omarmgerbie