Actualizado Puedo crear una página PDF única de la foto capturada con comentarios en iPHone. Al hacer clic en el botón, estoy generando una sola página PDF cada vez y quiero esas páginas PDF en un solo grupo de PDF. No puedo fusionar los archivos PDF únicos en un grupo.

http://mobile.tutsplus.com/tutorials/iphone/generating-pdf-documents/?search_index=3

He seguido el código URL anterior. ¿Podría sugerir alguna lógica aquí? Gracias por adelantado.

*Editar en codigo * puedes revisar el código de abajo

- (IBAction)didClickOpenPDF {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.pdf",myPDFName]];

if([[NSFileManager defaultManager] fileExistsAtPath:pdfPath]) {
    ReaderDocument *document = [ReaderDocument withDocumentFilePath:pdfPath password:nil];
    if (document != nil)
    {
        ReaderViewController *readerViewController = [[ReaderViewController alloc] initWithReaderDocument:document];
        readerViewController.delegate = self;
        readerViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        readerViewController.modalPresentationStyle = UIModalPresentationFullScreen;
        [self presentModalViewController:readerViewController animated:YES];
    }
 }
}

- (IBAction)didClickMakePDF {

            [self setupPDFDocumentNamed:[NSString stringWithFormat:@"%@",myPDFName] Width:850 Height:1100];


    [self beginPDFPage];
 CGRect textRect = [self addText:question.text
                      withFrame:CGRectMake(kPadding, kPadding, 400, 200) fontSize:48.0f];

 // dynamic image captured by camera,comment text, lines are added here

  [self finishPDF];

}

 - (void)setupPDFDocumentNamed:(NSString*)name Width:(float)width Height:(float)height {
  _pageSize = CGSizeMake(width, height);

 NSString *myPDFName = [NSString stringWithFormat:@"%@.pdf", name];
 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:myPDFName];

 UIGraphicsBeginPDFContextToFile(pdfPath, CGRectZero, nil);
int count = [gotIndexString integerValue];

for (int pageNumber = 2; pageNumber <= count; pageNumber++)
{
    //Open a pdf page context
    UIGraphicsBeginPDFPageWithInfo(CGRectZero, nil);

    //Get graphics context to draw the page
    CGContextRef currentContext = UIGraphicsGetCurrentContext();
    //Flip and scale context to draw the pdf correctly
    CGContextTranslateCTM(currentContext, 0, CGRectZero.size.height);
    CGContextScaleCTM(currentContext, 1.0, -1.0);
    NSURL *newUrl = [NSURL URLWithString:pdfPath];
    NSLog(@" setupPDFDocumentNamed newUrl for loop %@ ",newUrl);

    //Get document access of the pdf from which you want a page
    CGPDFDocumentRef newDocument = CGPDFDocumentCreateWithURL ((__bridge_retained CFURLRef) newUrl);
    NSLog(@" setupPDFDocumentNamed newDocument for loop %@ ",newDocument);

    //Get the page you want
    CGPDFPageRef newPage = CGPDFDocumentGetPage (newDocument, 1);
    NSLog(@" setupPDFDocumentNamed newPage for loop %@ ",newPage);

    //Drawing the page
    CGContextDrawPDFPage (currentContext, newPage);
    NSLog(@"CGContextRef context %@ ",currentContext);
    //Clean up
    newPage = nil;
    CGPDFDocumentRelease(newDocument);
    newDocument = nil;
    newUrl = nil;


}

}

- (void)beginPDFPage {

UIGraphicsBeginPDFPageWithInfo(CGRectMake(0, 0, _pageSize.width, _pageSize.height), nil);
}

- (void)finishPDF {
UIGraphicsEndPDFContext();
}