iOS Question File weirdness when operating in dir.documents

[Yuri Cinesi]

I have encountered an extremely strange behavior when using dir.documents.

I'm creating a file containing a string inside of dir.documents. Immediately after creating the file I check if it exists, and that returns true.
Later on, when trying to access the same file, it does not exist anymore.

The file is not deleted at any point in the code. None of this happens if the folder is dir.library instead.
I'm using a real iPhone 7.

This is the entirety of the code that references that file:

File.WriteString(InternalsDirectory,"AccountType",btn.tag)
Log(File.Exists(InternalsDirectory,"AccountType"))


Then later on, once the user presses a button:

Log(File.Exists(InternalsDirectory,"AccountType"))
If (File.ReadString(InternalsDirectory,"AccountType") = "google") Then

InternalsDirectory is simply a variable I use to determine the directory I'm using, be it library or documents.

 

[Erel]

Never encountered such issue. Are you able to reproduce it in a small project?

 

[Yuri Cinesi]

The issue does not appear in a smaller project I'm afraid. I can post the full project, though I would prefer not doing so publicly.

 

[Erel]

Carefully check your app. There is probably a mistake somewhere.

 

[Yuri Cinesi]

I already have checked. If it were a mistake, it stands to reason it would happen no matter what the directory is no?

 

[Yuri Cinesi]

New update: the bug is just...gone. Didn't change anything in the code, it just stopped happening.
I'd already tried reinstalling the application and cleaning the project, but it seems overwriting it with a different app (that had the same package name, I did it because I was doing some testing regarding firebaseauth) fixed it somehow.

Problem solved I suppose.

 

[Computersmith64]

Was this on a real device or a simulator? There have been some issues reported about simulators not correctly handling the Documents directory.

- Colin.

 

[Yuri Cinesi]

Was this on a real device or a simulator? There have been some issues reported about simulators not correctly handling the Documents directory.

- Colin.

A real iPhone 7, as stated in the post

 

[Computersmith64]

Oops - sorry. Missed that detail.

- Colin.

 

[sorex]

Yuri,

It seems like the issue I described a few years ago (this was also on real devices)

file.dirDocuments

Hello, Is it normal that data written to file.dirDocuments is lost when you restart the app? using code as below shows that the file always vanishes while it was there before. with file.dirLibrary it seems to work fine tho. Log(File.ListFiles(File.DirDocuments))...

www.b4x.com

 

[Yuri Cinesi]

Yes, that does appear to be the case. Seems like it's an extremely rare/random bug.