我正在尝试在我的UIScrollView Custom类之上添加页面控件。一切都很好。但每当我滑动scrollView时,页面控件也会沿着第一个图像滑动。
这是我的代码:
import Foundation
import UIKit
import SwiftyGif
class MBSPagingScrollView: UIScrollView {
var pageControl = UIPageControl()
var imagesArray = [String]()
override init (frame : CGRect) {
super.init(frame : frame)
}
convenience init () {
self.init(frame:CGRect.zero)
}
required init(coder aDecoder: NSCoder) {
fatalError("This class does not support NSCoding")
}
init(frame : CGRect, imagesarray : [String]){
super.init(frame : frame)
imagesArray = imagesarray
self.isPagingEnabled = true
self.showsHorizontalScrollIndicator = false
for (index, imageName) in imagesArray.enumerated() {
var imageView = UIImageView()
if imageName.hasSuffix(".gif") {
let gifManager = SwiftyGifManager(memoryLimit:30)
let gif = UIImage(gifName: imageName)
imageView = UIImageView(gifImage: gif, manager: gifManager)
}
else {
imageView = UIImageView(image: UIImage(named: imageName))
imageView.contentMode = UIViewContentMode.scaleToFill
}
imageView.frame = CGRect(x: CGFloat(index) * self.frame.size.width, y: 0, width: self.frame.size.width, height: self.frame.size.height)
self.addSubview(imageView)
}
self.contentSize = CGSize(width:self.frame.size.width * CGFloat(imagesArray.count),height: self.frame.size.height)
configurePageControl()
pageControl.addTarget(self, action: #selector(self.changePage(sender:)), for: UIControlEvents.valueChanged)
}
func configurePageControl() {
self.pageControl.frame = CGRect(x: 0, y: self.frame.size.height - 50, width: self.frame.size.width, height: 50)
self.pageControl.numberOfPages = imagesArray.count
self.pageControl.currentPage = 0
self.pageControl.tintColor = UIColor.red
self.pageControl.pageIndicatorTintColor = UIColor.black
self.pageControl.currentPageIndicatorTintColor = MainOrangeColor
self.addSubview(pageControl)
}
// // MARK : TO CHANGE WHILE CLICKING ON PAGE CONTROL
func changePage(sender: AnyObject) -> () {
let x = CGFloat(pageControl.currentPage) * self.frame.size.width
self.setContentOffset(CGPoint(x:x, y:0), animated: true)
}
func selfDidEndDecelerating(_ scrollView: UIScrollView) {
let pageNumber = round(self.contentOffset.x / self.frame.size.width)
pageControl.currentPage = Int(pageNumber)
}
}
以下是发生问题的图片
正如您所看到的,页面控件正在与第一个图像一起滑动。我需要它留在中心。
任何帮助将不胜感激!