How would i know file document is corrupt or cannot be loaded in PSPDFKit?
How delegate method should i implement in PSPDFKit to know document is corrupt or cannot be loaded?
The problem is file document does exist?? but don't know is file corrupt or not.
If i know then could download new file document if its corrupt.
Thanks you all !!!!!!
this is the main developer of PSPDFKit.
You can use the [document.isValid][1] property to determine if the document source is valid or not.
Related
I have a requirement where I need to get the original file name while picking any document using launchImageLibrary function of react-native-image-picker.
However, the library seems to store the original file in app cache and then picks it up with a different file name, and the original file name is lost in the process. I'm not sure if this issue is present is iOS but it happens in Android. Any help is much appreciated.
We are using dojo's dojox.form.uploader.FileList in our application to show the progress of file upload. But it shows the name of the file, type extension by default. We could not see any settings to hide it or getting a handle to that. Is it possible to get a handle to that object which has file name, size and extension? Could you please help us?
My iOS app loads a variety of documents using QLPreviewController. My aim is to set a flag if the document loaded properly and show an error if it didn't.
Curiously the QLPreviewControllerDelegate protocol offers no callback to check this, nor does the QLPreviewController seem to throw any exception when I try to load an invalid file.
For the record, I tried loading an invalid PDF and it simply logged a message about not being able to find the header and displayed an empty file.
Can anyone please tell me how I can figure this out?
Thanks!
If establishing whether an item could be displayed beforehand works for you then a call to the following may be an option:
+(BOOL)canPreviewItem:(id<QLPreviewItem>) item
i need to open an Apple unsupported file in my ipad app using "Open In" feature. The file extension in ".lasso" . I said that file is unsupported by Apple, because i cant find it description in Apple System-Declared Uniform Type Identifiers.
I was try to solved that using CFBundleDocumentTypes in info.plist, but i still can not open it. i was write this in my plist :
but when i try to open a .lasso file from another apps, there always show an alert "Can not open this file in another apps".
do somebody know how to solved it?
You need to create your own UTI for your file type, something like com.yourcompany.lasso. Your Info.plist is claiming to export the public.plain-text UTI which of course already exists. You would also list the pre-existing UTIs that your new UTI conforms to. You don't show what's under the "Conforms to UTIs" key in the screenshot, but it should apparently be public.plain-text if .lasso files are indeed plain text. (If there's a specific encoding for .lasso files, such as UTF-8, you should consider something more specific, such as public.utf8-plain-text.)
Also, you should either have a custom MIME type or not use one at all. You don't want to redefine the "text" MIME type to suggest that all data streams of that type are Lasso files, do you?
And why are you using all-caps for "LASSO". I assume that, in real use, files will have an extension in lowercase like ".lasso". Right?
I have an ASP application that uses ASPImage.Image to resize the uploaded image and then save the file to the server and save it in the database. However, it appears that if a user uploads a corrupted file the resulting image is blank white image.
I need a way to check if the file is corrupted before the image is passed to ASPImage.Image, that will then inform the user that the file is corrupted.
Can this be done with javascript, vbscript or ASPImage.Image itself?
Any assistance would be greatly appreciated.
Best Regards,
Paul Jacobs
There is no way to detect a corrupt image in either javascript or vbscript - you will need to try using ASPImage.Image directly.
It has an Error property, this will probably have an error detailing that a corrupt file has been loaded - did you try that? That is, if it is populated, chances are that the file was corrupt.
Additionally, the LoadImage method returns a boolean - I assume it will return false if the image couldn't be loaded due to corruption.
You can use the code here: http://forums.aspfree.com/code-bank-54/pure-asp-upload-script-with-additional-features-94647.html
Then check the image Width and Height - if 0 it means the uploaded file was not a valid image.
This is pure classic ASP code without third party components.