how to open a audio link or video link from pdf file which pdf loaded in uiwebview in ipad

Question

I am using a uiwebview to open a pdf file. I parsed the pdf file and able to extract text from it. I need to open audio or video player while clicking on that respective audio or video link.I am creating webview object runtime. I wrote the statement given below

[we setDataDetectorTypes:UIDataDetectorTypeLink];

but it is not work for me.

Please help me. Thanx in advanced.