ios - Autoplay MPMoviePlayerController when video scrolls into view -

i making ios app feed people can post videos , videos show on feed similar instagrams. want have videos seen start autoplaying , have 1 video play @ time. having problems in ios simulator more 1 video play @ time , of videos aren't seen in screen.

here code:

import uikit import parse import parseui import mediaplayer import mobilecoreservices  class userstableviewcontroller: pfquerytableviewcontroller {      let cellidentifier:string = "usercell"     var objmovieplayercontroller: mpmovieplayercontroller = mpmovieplayercontroller()      override func viewdidload() {         super.viewdidload()          self.pulltorefreshenabled = true         self.paginationenabled = false         self.objectsperpage = 25         self.tableview.rowheight = 422         self.tableview.allowsselection = false          let font = uifont(name: "apple sd gothic neo", size: 24.0) ?? uifont.systemfontofsize(24)         var nav = self.navigationcontroller?.navigationbar         nav?.barstyle = uibarstyle.default         nav?.bartintcolor = uicolor(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)         nav?.titletextattributes = [nsfontattributename : font, nsforegroundcolorattributename : uicolor(red: 1.0, green: (203.0/255.0), blue: (38.0/255.0), alpha: 1.0)]     }      override func viewwillappear(animated: bool) {         self.navigationitem.hidesbackbutton = true     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }      override func queryfortable() -> pfquery {         var query : pfquery = pfuser.query()!         var currentuser = pfuser.currentuser()!         let currentusergender : string = currentuser["gender"] as! string         let acceptablegenderprefs = ["both", currentusergender]         let currentusergenderpref : string = currentuser["genderpref"] as! string         query.wherekey("username", notequalto: currentuser.username!)         query.wherekey("genderpref", containedin: acceptablegenderprefs)          if (currentusergenderpref != "both") {             query.wherekey("gender", equalto: currentusergenderpref)         }         return query     }      override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath, object: pfobject?) -> pftableviewcell? {          var cell : userstableviewcell? = tableview.dequeuereusablecellwithidentifier(cellidentifier, forindexpath: indexpath) as? userstableviewcell          if(cell == nil) {             cell = userstableviewcell(style: uitableviewcellstyle.value1, reuseidentifier: cellidentifier)         }          if let pfobject = object {             cell?.usernamelabel?.text = pfobject["username"] as? string             var profilepic = pfobject["profilepicture"] as? pffile             var video1 = pfobject["video1"] as? pffile              profilepic?.getdatainbackgroundwithblock({                 (result, error) in                 if (result != nil) {                     cell?.userprofilepicture?.image = uiimage(data: result!)                 }             })             let video1url = nsurl(string: (video1?.url)!)             objmovieplayercontroller = mpmovieplayercontroller(contenturl: video1url)             objmovieplayercontroller.moviesourcetype = mpmoviesourcetype.unknown             objmovieplayercontroller.view.frame = (cell?.uservideo1.bounds)!             objmovieplayercontroller.scalingmode = mpmoviescalingmode.aspectfit             objmovieplayercontroller.controlstyle = mpmoviecontrolstyle.none             objmovieplayercontroller.repeatmode = mpmovierepeatmode.one             objmovieplayercontroller.shouldautoplay = true              cell?.uservideo1.addsubview(objmovieplayercontroller.view)              objmovieplayercontroller.preparetoplay()             objmovieplayercontroller.play()         }         return cell     }      // mark: actions     @ibaction func signoutaction(sender: anyobject) {         pfuser.logout()         self.navigationcontroller?.poptorootviewcontrolleranimated(false)       } } 

thank you help!

probably better way be

• don't play until scrolling comes halt
• verify if cell visible (at least 3/4th of height in visible area)
• even if want play while scrolling fast, set audio mute default. provide clickable icon on top of video enable/disable audio too

these observations on how instagram might doing.