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iphonesqlitepdfnsdatacgpdfdocument

CGPDFDocumentRef from NSData

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?

Solution

  • 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.