Create a table of contents from a pdf file

I'm using quartz to display pdf content, and I need to create a table of contents to navigate through the pdf. From reading Apple's documentation I think I am supposed to use CGPDFDocumentGetCatalog, but I can't find any examples on how to use this anywhere. Any ideas?

Update: Still haven't found a solution for this. I tired Alex' solution but the output I get looks like this:

2011-07-27 09:16:19.359 LDS Scriptures App-iPad[624:707] key: Pages
2011-07-27 09:16:19.361 LDS Scriptures App-iPad[624:707] key: Count
2011-07-27 09:16:19.362 LDS Scriptures App-iPad[624:707] pdf integer value: 238
2011-07-27 09:16:19.363 LDS Scriptures App-iPad[624:707] key: Kids
2011-07-27 09:16:19.366 LDS Scriptures App-iPad[624:707] key: Type
2011-07-27 09:16:19.368 LDS Scriptures App-iPad[624:707] key: Outlines
2011-07-27 09:16:19.370 LDS Scriptures App-iPad[624:707] key: Count
2011-07-27 09:16:19.371 LDS Scriptures App-iPad[624:707] pdf integer value: 7
2011-07-27 09:16:19.372 LDS Scriptures App-iPad[624:707] key: First
2011-07-27 09:16:19.374 LDS Scriptures App-iPad[624:707] key: Parent
2011-07-27 09:16:19.375 LDS Scriptures App-iPad[624:707] key: Count
2011-07-27 09:16:19.376 LDS Scriptures App-iPad[624:707] pdf integer value: 7

No idea yet how to turn that into a usable table of contents. Ideally I would like to get to an array of NSDictionary objects with a title and matching page number.


Something like this might help you get started:

NSURL *documentURL = ...; // URL to file or http resource etc.
CGPDFDocumentRef pdfDocument = CGPDFDocumentCreateWithURL((CFURLRef)documentURL);
CGPDFDictionaryRef pdfDocDictionary = CGPDFDocumentGetCatalog(pdfDocument);
// loop through dictionary...
CGPDFDictionaryApplyFunction(pdfDocDictionary, ListDictionaryObjects, NULL);


void ListDictionaryObjects (const char *key, CGPDFObjectRef object, void *info) {
    NSLog("key: %s", key);
    CGPDFObjectType type = CGPDFObjectGetType(object);
    switch (type) { 
        case kCGPDFObjectTypeDictionary: {
            CGPDFDictionaryRef objectDictionary;
            if (CGPDFObjectGetValue(object, kCGPDFObjectTypeDictionary, &objectDictionary)) {
                CGPDFDictionaryApplyFunction(objectDictionary, ListDictionaryObjects, NULL);
        case kCGPDFObjectTypeInteger: {
            CGPDFInteger objectInteger;
            if (CGPDFObjectGetValue(object, kCGPDFObjectTypeInteger, &objectInteger)) {
                NSLog("pdf integer value: %ld", (long int)objectInteger); 
        // test other object type cases here
        // cf.

Here is my approach. 1. Download this framework vfr reader 2. Use this lines of code to get all PDF chapters

NSString *path = [[NSBundle mainBundle] pathForResource:@"Reader" ofType:@"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSArray *arr = [ReaderDocumentOutline outlineFromFileURL:targetURL password:@""];

Hope it will help you.

I did it with a freeware library for iOS FastPdfKit

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