ios - SceneKit object from function does not appear in Simulator -

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hello trying run 2 examples on xcode. first apple's demobots example , other coin push example found on github. both times same single error, 'method not override method superclass' , stuck on best way correct these.

these respective lines of code

1.

    override func supportedinterfaceorientations() -> int {      if uidevice.currentdevice().userinterfaceidiom == .phone {          return int(uiinterfaceorientationmask.allbutupsidedown.rawvalue)     }      else {          return int(uiinterfaceorientationmask.all.rawvalue)          }     }

2.

 override func observevalueforkeypath(keypath: string?, ofobject object: anyobject?, change: [string: anyobject]?, context: unsafemutablepointer<void>) {      // check if kvo notification need.      if context == &progressscenekvocontext && keypath == "fractioncompleted" && object === progress {          // update progress ui on main queue.          dispatch_async(dispatch_get_main_queue()) {              guard let progress = self.progress else { return }              // update progress bar match amount of progress completed.             self.progressbarnode.size.width = self.progressbarinitialwidth * cgfloat(progress.fractioncompleted)              // display contextually specific progress description.             self.loadinglabelnode.text = progress.localizeddescription         }     }      else {          super.observevalueforkeypath(keypath, ofobject: object, change: change, context: context)     } }

in case (1), base class uiviewcontroller has method supportedinterfaceorientations signature () -> uiinterfaceorientationmask , not () -> int. error message telling about, is, method provide implementation not override method base class, instead new method available in sub-class only.

i think case (2) similar story.


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