Swift Settings picture timed gestures carousel, ScrollView and modify Pagecontrol button color

First: Set up using the uiscrollviewdelegate Proxy Protocol

Next, you need to initialize the global variables:

var picarray = [String] ()   // picture number let    scrollview = uiscrollview ()    = Uipagecontrol ()     var timer = Nstimer ()

Again: Set the frame of ScrollView and Pagecontrol:

Next, loop the picture and add it to the ScrollView:

 for(varI=0; i<self.picarray.count;i++){                            //Show pic ScrollLet IMAGEVC =Uiimageview () let ImageX= CGFloat (i* -) Imagevc.frame= CGRectMake (ImageX,0, -, -) Imagevc.image=UIImage (Named:picarray[i]) Self.scrollview.showsHorizontalScrollIndicator=falseSelf.scrollview.addSubview (IMAGEVC)}

And then set the style:

Self.scrollview.contentSize = Cgsizemake (CGFloat ( -*self.picarray.count),0) self.scrollview.pagingEnabled=trueSelf.scrollview.Delegate=Self self.mainView.addSubview (self.scrollview) self.pageControl.frame /c7>= CGRectMake ( the+ to,370+ -, the, -) Self.pageControl.currentPageIndicatorTintColor= Uicolor (RGB:0X288DCD) Self.pageControl.pageIndicatorTintColor= Uicolor (RGB:0xd9d9d9) Self.pageControl.currentPage=0self.pageControl.numberOfPages=self.picArray.count Self.mainView.addSubview (Self.pagecontrol) Self.add Timer ()

Then, write the ScrollView agent function:

    func scrollviewdidscroll (scrollview:uiscrollview) {        =  scrollView.frame.size.width         var2))/ scrollvieww)        = page    }    func scrollviewwillbegindragging (Scrollview:uiscrollview) {        Self.removetimer ()    }    func scrollviewdidenddragging (Scrollview:uiscrollview, Willdecelerate Decelerate:bool) {        self.addtimer ()    }

Last Add Timer:

 //Turn on Timerfunc AddTimer () {Self.timer= Nstimer.scheduledtimerwithtimeinterval (2, Target:self, selector:"NextImage", Userinfo:nil, repeats:true)    }    //Turn off the timerfunc Removetimer () {self.timer.invalidate ()} func NextImage () {varpage =Int (self.pageControl.currentPage)//println (Self.picArray.count)        if(page = = self.picarray.count-1) {page=0        }Else{page= page+1} self.scrollview.contentOffset= Cgpointmake (cgfloat (page) *self.scrollview.frame.size.width,0)    }

Reference article: iOS Development UI Chapter-uiscrollview control implementation Picture Carousel

How to enable scrolling and zooming with Uiscrollview in Swift

Swift Set picture timed gestures carousel, ScrollView and modify Pagecontrol button color