How to save created PDF in document folder and merge in iOS - ios

Question

Updated I am able to create single PDF page of photo captured with comment in iPHone. On button click I am generating one single PDF page every time and I want those PDF page in single PDF bunch. I am not able to merge the single PDF files in to bunch.
http://mobile.tutsplus.com/tutorials/iphone/generating-pdf-documents/?search_index=3
I have followed the above URL code. Could you suggest some logic here. Thanks in advance.
*Edit in code * can you check below code.
- (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();
}

Answer 1

I managed to achieve this by following code with some complex logic :)
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
// File paths
NSString *pdfPath1 = [documentsDirectory stringByAppendingPathComponent:#"temp1.pdf"];
NSString *pdfPath2 = [documentsDirectory stringByAppendingPathComponent:#"temp2.pdf"];
NSString *pdfPathOutput = [documentsDirectory stringByAppendingPathComponent:#"out.pdf"];
// File URLs - bridge casting for ARC
CFURLRef pdfURL1 = (__bridge_retained CFURLRef)[[NSURL alloc] initFileURLWithPath: (NSString *)pdfPath1];//(CFURLRef) NSURL
CFURLRef pdfURL2 = (__bridge_retained CFURLRef)[[NSURL alloc] initFileURLWithPath: (NSString *)pdfPath2];//(CFURLRef)
CFURLRef pdfURLOutput =(__bridge_retained CFURLRef) [[NSURL alloc] initFileURLWithPath: (NSString *)pdfPathOutput];//(CFURLRef)
// File references
CGPDFDocumentRef pdfRef1 = CGPDFDocumentCreateWithURL((CFURLRef) pdfURL1);
CGPDFDocumentRef pdfRef2 = CGPDFDocumentCreateWithURL((CFURLRef) pdfURL2);
// Number of pages
NSInteger numberOfPages1 = CGPDFDocumentGetNumberOfPages(pdfRef1);
NSInteger numberOfPages2 = CGPDFDocumentGetNumberOfPages(pdfRef2);
// Create the output context
CGContextRef writeContext = CGPDFContextCreateWithURL(pdfURLOutput, NULL, NULL);
// Loop variables
CGPDFPageRef page;
CGRect mediaBox;
// Read the first PDF and generate the output pages
NSLog(#"GENERATING PAGES FROM PDF 1 (%i)...", numberOfPages1);
for (int i=1; i<=numberOfPages1; i++) {
page = CGPDFDocumentGetPage(pdfRef1, i);
mediaBox = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
CGContextBeginPage(writeContext, &mediaBox);
CGContextDrawPDFPage(writeContext, page);
CGContextEndPage(writeContext);
}
// Read the second PDF and generate the output pages
NSLog(#"GENERATING PAGES FROM PDF 2 (%i)...", numberOfPages2);
for (int i=1; i<=numberOfPages2; i++) {
page = CGPDFDocumentGetPage(pdfRef2, i);
mediaBox = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
CGContextBeginPage(writeContext, &mediaBox);
CGContextDrawPDFPage(writeContext, page);
CGContextEndPage(writeContext);
}
NSLog(#"DONE!");
// Finalize the output file
CGPDFContextClose(writeContext);
// Release from memory
CFRelease(pdfURL1);
CFRelease(pdfURL2);
CFRelease(pdfURLOutput);
CGPDFDocumentRelease(pdfRef1);
CGPDFDocumentRelease(pdfRef2);
CGContextRelease(writeContext);