Swift3.0学习之ScrollView的简单使用

2017-07-17 by w350981132

1、创建scrollview

self.frame = CGRect(x: rect.origin.x, y: 0, width: rect.size.width, height: rect.size.height) self.contentSize = CGSize(width: CGFloat(imageNames.count ) * self.bounds.width,height: rect.size.height) self.bounces = false self.isPagingEnabled = true self.showsVerticalScrollIndicator = false self.showsHorizontalScrollIndicator = false for i in 0...(imageNames.count - 1) { let imageView = UIImageView.init(frame: CGRect(x: CGFloat(i) * self.bounds.width, y: 0, width: self.bounds.width, height: rect.size.height)) self.addSubview(imageView) imageView.contentMode = .scaleAspectFill imageView.image = UIImage(named: imageNames[i]) }
2、创建pagecontrol

pageControl = UIPageControl.init(frame: CGRect(x: (rect.size.width - 100)*0.5, y: rect.size.height - 30, width: 100, height: 20)) pageControl.numberOfPages = imageNames.count pageControl.pageIndicatorTintColor = pageIndicatorTintColor pageControl.currentPageIndicatorTintColor = currentPageIndicatorTintColor //将小白点放到scr之上 view.insertSubview(pageControl, aboveSubview: scrollView) 3、创建自动轮播的计时器

timer = Timer.scheduledTimer(timeInterval: timeInterval, target: self, selector: #selector(self.timerManager), userInfo: nil, repeats: true)
func timerManager() { //实现方法 }4、实现代理方法

func scrollViewDidScroll(_ scrollView: UIScrollView) { }在滚动时可以添加动画,使移动时视觉效果增强

UIView.beginAnimations(nil, context: nil)UIView.setAnimationDuration(0.3)//时间UIView.setAnimationCurve(UIViewAnimationCurve.easeInOut) //移动路径UIView.commitAnimations()



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