objective c - Download a PDF file from server -

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i want download pdf file server , save documents directory. able using nsdata file in documents directory not pdf: it's nsdata object. there way download , save straight pdf file?

nsdata *pdfdata = [nsdata datawithcontentsofurl:     [nsurl urlwithstring:@"http://…"]]; [pdfdata writetofile:@"…" atomically:yes];

this not work?


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