Question

Am converting a webpage as a pdf file. I did the following,

NSString *string=[NSString stringWithFormat:@"%@.pdf",[chapersArray objectAtIndex:pageIndex]];
[controller1 addAttachmentData:pdfData mimeType:@"application/pdf" fileName:string];
[self presentModalViewController:controller1 animated:YES];
[controller1 release];

Now how can i convert my NSData into pdf and save in my application memory? Kindly help me with sample codes or suggestions. Thanks all.

Answer 1

Am assuming you have your pdf in documents directory here. You can change it to where ever it actually is. Try this –

//to convert pdf to NSData
NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:@"test.pdf"]; 
NSData *myData = [NSData dataWithContentsOfFile:pdfPath]; 

Essentially using CGPDFDocumentCreateWithProvider you can convert NSData to pdf,

//to convert NSData to pdf
NSData *data               = //some nsdata
CFDataRef myPDFData        = (CFDataRef)data;
CGDataProviderRef provider = CGDataProviderCreateWithCFData(myPDFData);
CGPDFDocumentRef pdf       = CGPDFDocumentCreateWithProvider(provider);

Don’t forget to CFRelease all unused data after you are done.