PDF not loading from documents folder on App relaunch iOS

Question

I have a pdf that I download from the server and save it. Next I open the file from the file path within a UIWebView. This works the first time I launch the app. When I relaunch the app again, even thought the file path is the same, the document does not open. Also, the document does exist in the document folder of the app.

I am doing something like :-

SaveToFolder.cs

var filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), fileName);

using (FileStream destinationStream = File.Create(filePath))
{
     await documentStream.CopyToAsync(destinationStream);
}

File path after saving the document first time :-

 /var/mobile/Containers/Data/Application/C3EA2325-81CA-4EC9-8C03-479ACF7EE330/Documents/Insufficiency.pdf

File Path on app relaunch

/var/mobile/Containers/Data/Application/C3EA2325-81CA-4EC9-8C03-479ACF7EE330/Documents/Insufficiency.pdf  

Is there something Iam doing wrong?

Answer 1

I ran into the same issue a while ago. You can refer Can't find saved file (in device) after restarting the app

According to the answer

You shouldn't store raw file paths for persistence (or if you do, know that the root can move on you). A better practice would be to only store the relative part of the path and always attach it to the current "root" path in question (particularly if you might be sharing data across devices as with iCloud).

Maybe your root is changing as well. You can change your approach and append the filename with the default path to your documents folder like so in Xamarin:-

var docsPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); filePath = docsPath +"/" + "Insuffeciency.pdf";

Also, consider changing your Personal folder to MyDocuments folder while saving the file.