[UIKit] 시간에 따라 넘어가는 이미지 배너

 

 

타이머 돌리고 이미지가 시간에 맞춰서 돌아가고, 페이징 기능(isPagingEnabled)가 있는 UIViewcontroller

 

 

clipsToBounds 속성은 그대로 유지되어 이미지가 UIImageView의 경계를 넘어가지 않도록 합니다.

import UIKit

class ViewController: UIViewController {
    
    let scrollView = UIScrollView()
    let numberOfPages = 3
    let pageWidth: CGFloat = UIScreen.main.bounds.width
    let pageHeight: CGFloat = UIScreen.main.bounds.height
    
    var currentPage = 0
    var timer: Timer?
    let duration: TimeInterval = 1.0
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        scrollView.frame = CGRect(x: 0, y: 0, width: pageWidth, height: pageHeight)
        scrollView.isPagingEnabled = true
        scrollView.contentSize = CGSize(width: pageWidth * CGFloat(numberOfPages), height: pageHeight)
        scrollView.delegate = self
        view.addSubview(scrollView)
        
        for i in 0..<numberOfPages {
            let imageView = UIImageView()
            imageView.contentMode = .scaleAspectFit
            imageView.clipsToBounds = true
            imageView.frame = CGRect(x: pageWidth * CGFloat(i), y: 0, width: pageWidth, height: pageHeight)
            imageView.image = UIImage(named: "image\(i+1)") // 이미지 이름에 따라 변경해주세요.
            scrollView.addSubview(imageView)
        }
        
        startTimer()
    }
    
    func startTimer() {
        timer = Timer.scheduledTimer(timeInterval: duration, target: self, selector: #selector(scrollToNextPage), userInfo: nil, repeats: true)
    }
    
    func stopTimer() {
        timer?.invalidate()
        timer = nil
    }
    
    @objc func scrollToNextPage() {
        let nextPage = (currentPage + 1) % numberOfPages
        let offsetX = CGFloat(nextPage) * pageWidth
        scrollView.setContentOffset(CGPoint(x: offsetX, y: 0), animated: true)
    }
}

extension ViewController: UIScrollViewDelegate {
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        let contentOffsetX = scrollView.contentOffset.x
        let page = Int(contentOffsetX / pageWidth)
        currentPage = page
    }
    
    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
        stopTimer()
    }
    
    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
        startTimer()
    }
}