Integrate MuPDF Swift - IOS project

Question

After I created a Objective-c class in my project based on JosephH example. I imported it in my bridging header file. I was actually able to make it work using a .pdf file in the main bundle

NSString *file = [[NSBundle mainBundle] pathForResource:@"hello-world" ofType:@"pdf"];.

which returns:

"/var/containers/Bundle/Application/63F34E6B-75A7-4CC0-9149-9DF2861DF3A2/sempre-editora.app/hello-world.pdf"

It did render everything all right, zooming and everything. but when I try to render a file in my "Documents" folder it just doesn't work. I even tried to just put this "hello-world.pdf" file inside my "Documents" to try it out and it still doesn't work. This is the path of my documents file:

"/var/mobile/Containers/Data/Application/AF776E50-FAAC-4274-824F-4F9634E072F6/Documents/70-10"

What could be the problem? I'm sure this is the correct path for my file, and it actually exists, the framework doesn't throw any error but I just get a gray background.

I thought it could be because my file doesn't have an extension but when I add a .pdf to my file and try to render it, it crashes.

After some tests I realised that when the PDF has two pages, and I go to the second page, it actually renders the pdf.

Perlman

I wonder if the crash when you add the .pdf is a clue - whereabouts is it crashing? Does the same PDF file display okay in the example? – Strand

It crashes when I initialize my MuDocumentController, it says "Cannot load document". When I try to render from a file inside my project and presentViewController it renders fine. When I try start a pageViewController with it (same file inside my project), it doesn't render, only when I pass page – Perlman

I think there's probably several different things going on here. To get to the bottom of it we need to apply a systematic approach and start from a simple point that should work, then make one change at a time till it doesn't work, and then diagnose why that change didn't work. If you do exactly what github.com/jogu/MuPDF-example/blob/master/MuPDF-example/… what is the first thing that goes wrong and what is the exact error message? (I cannot find the error you mention, "Cannot load document", anywhere in the code.) – Strand

Basically if I try to display using "self.presentViewController" it renders normally... If I try to display it using a page View Controller it doesn't render ... No errors, or anything... but if the pdf has two pages or more and I go to the second page, it renders... – Perlman