在UIWebview中打开NSData (PDF内容)，它存储在Sqlite中

I want to open pdf file in webview but the scenario is different here, I have saved pdf content as NSData into sqlite table (blob data type), I got success when I was inserting data into sqlite table but once I fetch the blob content into NSData and trying to open that data into WebView it gives me error - I want to open pdf file in webview but the scen