ios - Incompatible pointer- MPMoviePlayer from URL -

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I have an NSArray that loads video files from XML data when you press an array item It shows a button in which the NSString url is loaded. Here's the code to work on here. 

  - (IBAction) playMovie: (ID) sender {RSSItem * item = (RSSItem *) self.description; NSURL * movieUrl = [NSURL URLWithString: item]; MPMoviePlayerController * Movie Player Controller = [[MP3 MPV Player Controller Alok] Init with Content URL: Film URL]; [Self.view addSubview: moviePlayerController.view]; Movie Player Controller Full screen = yes; [Movieplayer controller play]; }   
 I'm getting a warning '' Incompatible Notifier Type 'RSSIT * _String' type is sending the parameter of 'NSString *'  
 Whatever I think Can I try to do everything I can to convert the string to string and bring it to work. Please tell me that this question is very specific for the forum or basic.  
 Thank you!   
 
 
 this:  
  RSSItem * item = (RSSItem *) self .description;   
 It should be:  
  NSString * item = self.description;   
 Your code is upset and upset about the above line. Inserting  details  from  RSSItem          Is trying (which is  NSString )

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