SWIFT用ScrollView加圖片製作Banner

標籤：

網上參考OBJC寫的用ScrollView圖片輪播效果，照著畫了個，先上:

附上代碼：

 1 @IBOutlet weak var pc: UIPageControl! 2     @IBOutlet weak var sv:UIScrollView! 3      4     var timer:NSTimer! 5      6     override func viewDidLoad() { 7         super.viewDidLoad() 8          9         for i in 1...6{ //loading the images10             let image = UIImage(named: "pic\(i).jpg")!11             let x = CGFloat(i - 1) * self.view.frame.width //這一步擷取ScrollView的寬度時我用IPHONE6實體機測試是320，右邊會出現第二張圖片的一部分，最後還是用ROOT VIEW的寬度12             var imageView = UIImageView(frame: CGRectMake(x, 0, self.view.frame.width, sv.bounds.height))13             imageView.image = image14             sv.pagingEnabled = true15             sv.showsHorizontalScrollIndicator = false16             sv.scrollEnabled = true17             sv.addSubview(imageView)18             sv.delegate = self19         }20         21         sv.contentSize = CGSizeMake((self.view.frame.width * 6), sv.frame.height)22         pc.numberOfPages = 623         pc.currentPageIndicatorTintColor = UIColor.redColor()24         pc.pageIndicatorTintColor = UIColor.whiteColor()25         addTimer()26         27     }28     29     func scrollViewDidScroll(scrollView: UIScrollView) {30         let width = self.view.frame.width31         let offsetX = scrollView.contentOffset.x32         let index = (offsetX + width / 2) / width33         pc.currentPage = Int(index)34     }35     36     func scrollViewWillBeginDragging(scrollView: UIScrollView) {37         removeTimer()38     }39     40     func scrollViewDidEndDragging(scrollView: UIScrollView, willDecelerate decelerate: Bool) {41         addTimer()42     }43     44     func addTimer() {45         timer = NSTimer.scheduledTimerWithTimeInterval(5, target: self, selector: "nextImage", userInfo: nil, repeats: true)46     }47     48     func removeTimer() {49         timer.invalidate()50     }51 52     53     func nextImage() {54         var pageIndex = pc.currentPage55         if pageIndex == 5 {56             pageIndex = 057         } else {58             pageIndex++59         }60         61         var offsetX = CGFloat(pageIndex) * self.view.frame.width62         sv.setContentOffset(CGPointMake(offsetX, 0), animated: true)63     }

 

SWIFT用ScrollView加圖片製作Banner