Vfr-Reader在断言时崩溃（range.location！= NSNotFound）;

Question

I am using this open source control called Vfr Reader to show pdf files in my app. All was working on iOS 7. After iOS update app crashes when I try on open a pdf file.

I am using this code to initialize pdf reader.

NSString *fileName = [[NSBundle mainBundle] pathForResource:@"PdfName" ofType:@"pdf"];
ReaderDocument *document = [ReaderDocument withDocumentFilePath:fileName password:nil];
if (document != nil)
{
    ReaderViewController *readerViewController = [[ReaderViewController alloc] initWithReaderDocument:document];
    readerViewController.delegate = self;

    readerViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
    readerViewController.modalPresentationStyle = UIModalPresentationFullScreen;

    [self presentViewController:readerViewController animated:YES completion:Nil];
}

App crashes in this fuction of vfr

+ (NSString *)relativeFilePath:(NSString *)fullFilePath
{
    assert(fullFilePath != nil); // Ensure that the full file path is not nil

    NSString *applicationPath = [ReaderDocument applicationPath]; // Get the application path

    NSRange range = [fullFilePath rangeOfString:applicationPath]; // Look for the application path

    assert(range.location != NSNotFound); // **Crashes here**

    return [fullFilePath stringByReplacingCharactersInRange:range withString:@""]; // Strip it out
}

On crash debugger shows these values.

fullFilePath = @"/Users/GuruTraxiOSDev01/Library/Developer/CoreSimulator/Devices/CC9412A6-9A95-4F46-89BA-8ECC13D0AF19/data/Containers/Bundle/Application/D2DC440B-F010-4575-93FD-3CB05BFF4F78/AppName.app/PdfName.pdf" 0x798c9b30

range = location=2147483647, length=0

applicationPath =@"/Users/GuruTraxiOSDev01/Library/Developer/CoreSimulator/Devices/CC9412A6-9A95-4F46-89BA-8ECC13D0AF19/data/Containers/Data/Application/32D612DE-FFD2-4C1E-B403-CDA177B460A6" 0x798b46b0

I already confirmed the file's existence. Can anyone help please!

EDIT: This question solved crash on file load. But app still crashes on CGContextDrawPDFPage(context, thePDFPageRef);

Answer 1

I was facing the same issue, so I made some changes to the Library Files which should not be an option as such but in this case I didn't have any choice to get it to work. So to make your code work follow the instruction below:

Go to ReaderDocument.m file and make the following changes:

+ (NSString *)documentsPath
{
    //Make changes to return the NSBundle path.
    NSString *bundlePath = [[NSBundle mainBundle] bundlePath];

    NSFileManager *fileManager = [NSFileManager new]; // File manager instance

    NSURL *pathURL = [fileManager URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:NULL];

//  return [pathURL path]; // Path to the application's "~/Documents" directory // Code changes.
    return bundlePath;
}

Answer 2

If you had a breakpoint just delete it, that solve it for me.

Breakpoint navigator => select the breakpoint then delete