CGPDFDocumentRef from NSData

iphone sqlite pdf nsdata cgpdfdocument
Oleg Danu picture Oleg Danu · Feb 2, 2011 · Viewed 9.6k times · Source

I get my PDF from SQLite DB into a NSData variable. Now what are my options to create CGPDFDocumentRef from this NSData?

Or what are my options anyway to create this CGPDFDocumentRef, have the data in SQLite?

Answer

viggio24 picture viggio24 · Feb 2, 2011

You can create a PDF document using this function:

CGPDFDocumentRef CGPDFDocumentCreateWithProvider (
   CGDataProviderRef provider
);

To create the provider you can use this function:

CGDataProviderRef CGDataProviderCreateWithCFData (
   CFDataRef data
);

and consider that NSData and CFDataRef are toll-free bridged so you can use them interchangeably.

So summarizing try this:

NSData *data = ... my data from SQLite ...
CFDataRef myPDFData = (CFDataRef)data;
CGDataProviderRef provider = CGDataProviderCreateWithCFData(myPDFData);
CGPDFDocumentRef pdf = CGPDFDocumentCreateWithProvider(provider);

Don't forget to CFRelease all unused data.

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