ios - complateTransition don't dismiss the from view swift 2 -

i trying set interactive transition class :

class transitionmanager: nsobject, uiviewcontrolleranimatedtransitioning, uiviewcontrollerinteractivetransitioning, uiviewcontrollertransitioningdelegate, uiviewcontrollercontexttransitioning {  weak var transitioncontext: uiviewcontrollercontexttransitioning?  var sourceviewcontroller: uiviewcontroller! {     didset {         enterpangesture = uiscreenedgepangesturerecognizer()         enterpangesture.addtarget(self, action:"panned:")         enterpangesture.edges = uirectedge.left         sourceviewcontroller.view.addgesturerecognizer(enterpangesture)     } } var togosourceviewcontroller: uiviewcontroller!  let duration    = 1.0 var presenting  = true var reverse = false var originframe = cgrectnull var shouldbeinteractive = false  private var didstartedtransition = false private var animated = false private var interactive = false private var animationstyle = uimodalpresentationstyle(rawvalue: 1) private var didfinishedtransition = false private var percenttransition: cgfloat = 0.0 private var enterpangesture: uiscreenedgepangesturerecognizer! private var tovc = uiviewcontroller() private var pointtovc = cgpoint() private var pointfromvc = cgpoint() private var fromvc = uiviewcontroller() private var generalcontainer = uiview()  func animatetransition(transitioncontext: uiviewcontrollercontexttransitioning) {      animated = true      let container = transitioncontext.containerview()     let fromviewcontroller = transitioncontext.viewcontrollerforkey(uitransitioncontextfromviewcontrollerkey)!     let toviewcontroller = transitioncontext.viewcontrollerforkey(uitransitioncontexttoviewcontrollerkey)!      if reverse {         toviewcontroller.view.center.x -= (container?.bounds.size.width)!         container?.insertsubview(toviewcontroller.view, abovesubview: fromviewcontroller.view)     } else {         toviewcontroller.view.center.x += (container?.bounds.size.width)!         container?.addsubview(toviewcontroller.view)     }      uiview.animatewithduration(duration, delay: 0.0, options: uiviewanimationoptions.transitionnone, animations: {         if self.reverse {             toviewcontroller.view.center.x += (container?.bounds.size.width)!         } else {             toviewcontroller.view.center.x -= (container?.bounds.size.width)!         }         }, completion: { finished in             transitioncontext.completetransition(true)             self.animated = false             self.reverse = !self.reverse     }) }  func transitionduration(transitioncontext: uiviewcontrollercontexttransitioning?) -> nstimeinterval {     return duration }  func startinteractivetransition(transitioncontext: uiviewcontrollercontexttransitioning) {      interactive = true     animated = true      let container = transitioncontext.containerview()     let fromviewcontroller = transitioncontext.viewcontrollerforkey(uitransitioncontextfromviewcontrollerkey)! //articleview     let toviewcontroller = transitioncontext.viewcontrollerforkey(uitransitioncontexttoviewcontrollerkey)! //article ou favoris      if reverse {         toviewcontroller.view.frame.origin.x = -fromviewcontroller.view.frame.maxx         container?.insertsubview(toviewcontroller.view, abovesubview: fromviewcontroller.view)     }     tovc = toviewcontroller     pointtovc = toviewcontroller.view.bounds.origin     fromvc = fromviewcontroller     pointfromvc = fromviewcontroller.view.bounds.origin     generalcontainer = container! }  func containerview() -> uiview? {     return sourceviewcontroller?.view }  func viewcontrollerforkey(key: string) -> uiviewcontroller? {     return sourceviewcontroller?.storyboard!.instantiateviewcontrollerwithidentifier(key) }  func viewforkey(key: string) -> uiview? {     return sourceviewcontroller?.storyboard!.instantiateviewcontrollerwithidentifier(key).view }  func initialframeforviewcontroller(vc: uiviewcontroller) -> cgrect {     return vc.view.frame }  func finalframeforviewcontroller(vc: uiviewcontroller) -> cgrect {     return vc.view.frame }  func isanimated() -> bool {     return animated }  func isinteractive() -> bool {     return interactive }  func presentationstyle() -> uimodalpresentationstyle {     return animationstyle! }  func completetransition(didcomplete: bool) {     interactive = false     animated = false     shouldbeinteractive = false     didfinishedtransition = didcomplete     transitioncontext?.finishinteractivetransition()     transitioncontext?.completetransition(true) }  func updateinteractivetransition(percentcomplete: cgfloat) {     if self.reverse {         print(percentcomplete)         self.tovc.view.frame.origin.x = (self.fromvc.view.frame.maxx * (percentcomplete)) - self.fromvc.view.frame.maxx     } }  func finishinteractivetransition() {     uiview.animatewithduration(duration, delay: 0.0, options: uiviewanimationoptions.transitionnone, animations: {         if self.reverse {             self.tovc.view.frame.origin.x = self.fromvc.view.frame.origin.x         }         }, completion: { finished in             self.animated = false             self.reverse = !self.reverse             self.completetransition(true)     }) }  func cancelinteractivetransition() {     uiview.animatewithduration(duration, delay: 0.0, options: uiviewanimationoptions.transitionnone, animations: {         if self.reverse {             self.tovc.view.frame.origin.x = -self.fromvc.view.frame.maxx         }         }, completion: { finished in             self.animated = false             self.completetransition(true)     }) }  func transitionwascancelled() -> bool {     return didfinishedtransition }  func targettransform() -> cgaffinetransform {     return cgaffinetransform() }  func completionspeed() -> cgfloat {     return 1 - percenttransition }  func panned(pan: uipangesturerecognizer) {     switch pan.state {     case .began:         animated = true         shouldbeinteractive = true         didstartedtransition = true         didfinishedtransition = false         sourceviewcontroller?.dismissviewcontrolleranimated(true, completion: nil)         updateinteractivetransition(0)         break     case .changed:         percenttransition = cgfloat(pan.translationinview(sourceviewcontroller!.view).x / sourceviewcontroller!.view.frame.width)         if percenttransition < 0.0 {             percenttransition = 0.0         } else if percenttransition > 1.0 {             percenttransition = 1.0         }         updateinteractivetransition(percenttransition)         break     case .ended, .failed, .cancelled:         animated = false         shouldbeinteractive = false         didstartedtransition = false         didfinishedtransition = true         if percenttransition < 0.8 {             cancelinteractivetransition()         } else {             finishinteractivetransition()         }         break     case .possible:         break     } } 

}

the animatetransition works , dismiss fromviewcontroller during interactivetransition when call finishinteractivetransition() , completetransition(true), still have both view :

but on apple said :

you must call method after animations have completed notify system transition animation done. parameter pass must indicate whether animations completed successfully. interactive animations, must call method in addition finishinteractivetransition or cancelinteractivetransition method. best place call method in completion block of animations.

so, doing wrong ?

i using ios9, swift 2, xcode 7 beta 6

i found solution :

i should call transitioncontext.completetransition(true) in function finishinteractivetransition() on previous code transitioncontext not same in startinteractivetransition(transitioncontext: uiviewcontrollercontexttransitioning)

so add 1 variable :

private var context: uiviewcontrollercontexttransitioning? 

and use call :

transitioncontext.completetransition(true) 

or

transitioncontext.completetransition(false)