滾動檢視(UIScrollView)的用法和實現頁面滾動切換
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let scrollView= UIScrollView ()
scrollView.frame= self .view.bounds
let imageView= UIImageView (image: UIImage (named: "bigpic" ))
scrollView.contentSize=imageView.bounds.size;
scrollView.addSubview(imageView); self .view.addSubview(scrollView)
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通過scrollView.contentOffset.x與scrollView.contentOffset.y我們可以取到移動的偏移位置
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import UIKit
class ViewController : UIViewController , UIScrollViewDelegate {
var scrollView: UIScrollView !
override func viewDidLoad()
{
super .viewDidLoad()
scrollView= UIScrollView ()
//設定代理
scrollView.delegate
= self
scrollView.frame= self .view.bounds
let imageView= UIImageView
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