Skip to main content

File System Access API on Safari iOS - createSyncAccessHandle() UnknownError: 'invalid platform file handle'

I'm currently refactoring an app to use the OPFS to save images on an iPad for a use-case where a user needs to take pictures in a location that doesn't have wi-fi but storing all of the images in RAM will cause the iPad to crash.

I've managed to create a working OPFS Worker that works on my local Windows machine on Chrome and Firefox, but I can't get it working on the test iPad. [EDIT] What it does is sends the base64 text to the worker and saves it as a text file, that I can retrieve later.

The iPad I'm using to test is iOS version 16.3.1.

The iPad I'm trying to develop for is iOS version 15.7.3.

As far as I can tell, Safari iOS has had OPFS compatibility since 15.2.

I was able to narrow down the problem to one specific error (via Web Inspector):

Unhandled Promise Rejection: UnknownError: invalid platform file handle

It references back to the following code (within a Web Worker):

    const root = await navigator.storage.getDirectory();
    const saveHandle = await root.getFileHandle(input.fileName, { create: true });
    const access = await saveHandle.createSyncAccessHandle(); //<-- ERROR

input.fileName is usually something like S0I0.txt, based off a labeling system I have for organizing the images.

It doesn't seem to matter if the file is being created by getFileHandle() or not.

I haven't been able to extract anything else from the Error object.

I also have been unable to find any reference to this specific error anywhere. It's not on the list of Exceptions on the web docs. In fact, the only reference to the exact phrase I've found is on an old ticket from 2013.

As far as I can tell, the 2 preceding statements work correctly and generate the right objects, being FileSystemDirectoryHandle and FileSystemFileHandle, respectively.

Via Active questions tagged javascript - Stack Overflow https://ift.tt/fDqtxLw
Labels:

Comments

Post a Comment

Popular posts from this blog

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more

How to split a rinex file if I need 24 hours data

Trying to divide rinex file using the command gfzrnx but getting this error. While doing that getting this error msg 'gfzrnx' is not recognized as an internal or external command Trying to split rinex file using the command gfzrnx. also install'gfzrnx'. my doubt is I need to run this program in 'gfzrnx' or in 'cmdprompt'. I am expecting a rinex file with 24 hrs or 1 day data.I Have 48 hrs data in RINEX format. Please help me to solve this issue. source https://stackoverflow.com/questions/75385367/how-to-split-a-rinex-file-if-i-need-24-hours-data
Post a Comment
Read more