Wavelet says Swift third season building UI component set for Swift UI-View Set (vii) Progress view View Learn notes

1 Import UIKit2 3 classviewcontroller:uiviewcontroller{4     5@IBOutlet weak var progress:uiprogressview!6     7Let Operationqueue =Nsoperationqueue ()8     9var completion progress: Int =0{Ten Didset (oldValue) { OneLet progress ratio = Float (Completion progress)/float ( -) ALet whether animation = (OldValue! =0) - Progress.setprogress (progress ratio, animated: whether animated) -         } the     } -     //simulate a progress "sleep operation" - func simulateprogress () { -          for_inch 0... - { + operationqueue.addoperationwithblock{ -             //delay the system time by a random second, simulating the operation of other functions of other programs +Sleep (Arc4random_uniform (Ten)) A              at nsoperationqueue.mainqueue (). addoperationwithblock{ -Self. Complete progress + + -                 return -             } -             } -         } in     } -     Overridefunc viewdidload () { to super.viewdidload () + simulateprogress () -          the     } *  $     Overridefunc didreceivememorywarning () {Panax Notoginseng super.didreceivememorywarning () -     } the}

Wavelet says Swift third season building UI component set for Swift UI-View Set (vii) Progress view View Learn notes