xcode - Swift: share mp3 file via whatsapp -


i try share audio file app via whatsapp, xcode shows error:

var controller      = uidocumentinteractioncontroller()      if uiapplication.sharedapplication().canopenurl(nsurl(string:"whatsapp://app")!) {          var savepath = nsbundle.mainbundle().pathforresource("test", oftype:"mp3")          controller          = uidocumentinteractioncontroller(url:nsurl(fileurlwithpath:savepath!)!)         controller.uti      = "net.whatsapp.audio"         controller.delegate = self         controller.presentopeninmenufromrect(cgrectzero, inview: self.view, animated: true)      } else {        println("error")     }

*** terminating app due uncaught exception 'nsinvalidargumentexception', reason: '-[__nscftimer _opendocumentwithapplication:]: unrecognized selector sent instance 0x17417c980'


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