Loading Local PDF File Into WebView

Question

I am attempting to put the following functionality into an iOS app I am writing:

Ship a set of PDFs in the resources folder of the project in XCode
Copy the PDFs to the app directory
Open the PDF in a webview.

As far as I can see, the first two steps work ok (I've used FileManager to check fileExistsAtPath after the copy operation). However, the webview is empty, and is erroring out ("the requested URL does not exist on server"). My code for the file open is as follows:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                          NSUserDomainMask, YES);
NSString *localDocumentsDirectory = [paths objectAtIndex:0];
NSString *pdfFileName = @"example.pdf";
NSString *localDocumentsDirectoryPdfFilePath = [localDocumentsDirectory  
                                     stringByAppendingPathComponent:pdfFileName];
pdfUrl = [NSURL fileURLWithPath:localDocumentsDirectoryPdfFilePath];
[webView loadRequest:[NSURLRequestWithURL:pdfUrl];

This works fine on the simulator, but doesn't work on the device

The device is case-sensitive. Make sure the filename matches exactly. — , Sep 21 '11 at 15:43
Anna, thank you! I was about to say that I'd already checked that. But when I went back and looked again, the .pdf was infact .PDF If you add this as an answer I'll mark it as solved. Thanks again. — HaemEternal, Sep 21 '11 at 16:02

score 1 · Answer 1 · answered Sep 21 '11 at 16:52

1

Are you sure you don't want to let the UIDocumentInteractionController do the heavy lifting for you?

UIDocumentInteractionController *dc = [UIDocumentInteractionController interactionControllerWithURL:fileURL];
dc.delegate = self;
[dc presentPreviewAnimated:YES];

answered Sep 21 '11 at 16:52

bshirley

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Thanks for the suggestion. I haven't seen that before, I'll give it a try. – HaemEternal Sep 22 '11 at 08:21
Great answer! Adding an answer for Swift 3 – Foti Dim Aug 01 '17 at 20:03

score 0 · Answer 2 · answered Aug 01 '17 at 20:11

As bshirley suggested UIDocumentInteractionController is a great option to present your PDF. Initially I tried using the 3rd party JSQWebViewController but I was getting a blank screen on device while on simulator it was working. UIDocumentInteractionController worked great for me! For Swift you can do:

let interactionController = UIDocumentInteractionController(url: fileURL)
interactionController.delegate = self
interactionController.presentPreview(animated: true)

and implement the delegate method:

// Mark: UIDocumentInteractionControllerDelegate
func documentInteractionControllerViewControllerForPreview(_ controller: UIDocumentInteractionController) -> UIViewController {
    return UIApplication.shared.keyWindow!.rootViewController!
}

score 0 · Accepted Answer · answered Oct 25 '11 at 11:06

0

As posted by Anna Karenina above, "The device is case-sensitive. Make sure the filename matches exactly"

answered Oct 25 '11 at 11:06

HaemEternal

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Loading Local PDF File Into WebView

3 Answers3

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