Failed to download and open a PDF file with error failed to find PDF header in ios

Question

I am having an app in which I am opening a PDF file from a url.

I am successfully able to open it in a webView.

Now I want to download that PDF file and sa

Answer 1

If convert to string server response, that you got in NSData *pdfData, you will see next:

This only web page, which, as I can assume, will forward you to document with another URI: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf. So you must use this url if you want to download .pdf file

Also, pay attention on @pawan's answer, and use his approach to avoid download files in main thread