ios - How to fade in and out an ActivityIndicator in Swift? -


here activity indicator:

self.activityindicator = uiactivityindicatorview(activityindicatorstyle: uiactivityindicatorviewstyle.whitelarge) self.activityindicator.center = self.view.center self.view.addsubview(activityindicator)

i can start self.activityindicator.startanimating() , stop self.activityindicator.stopanimating(). i'd transition when stops more fluid , think nice fade out element on 400 milliseconds rather hiding when call stopanimating.

any ideas on how this?

    // set initial state     self.activityindicator.alpha = 0.0      // show     self.activityindicator.startanimating()     uiview.animatewithduration(0.4) {         self.activityindicator.alpha = 1.0     }      // hide     uiview.animatewithduration(0.4, animations: {         self.activityindicator.alpha = 0.0     }) { complete in         self.activityindicator.stopanimating()     }

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