new/CommonFrame/XFBanner.swift

//
//  XFBanner.swift
//  tttest
//
//  Created by uen on 2020/7/27.
//  Copyright © 2020 xiaofei. All rights reserved.
//

import Foundation
import UIKit

class XFBanner: UIView, UIScrollViewDelegate {
    // 重写setter方法
    var viewArr: NSArray? {
        didSet {
            // 处理逻辑
            setupView()
        }
    }

    lazy var pageControl: UIPageControl = {
        let pageV = UIPageControl.init()
        pageV.currentPage = 0
        pageV.currentPageIndicatorTintColor = UIColor.red
        pageV.pageIndicatorTintColor = UIColor.lightGray
        return pageV
    }()

    func setupView() {
        print(viewArr!)
        for i in 0 ..< viewArr!.count {
            let view: CommonDataView = viewArr![i] as! CommonDataView
            scrollView.addSubview(view)
            view.frame = CGRect(x: self.frame.width * CGFloat(i), y: 0, width: self.frame.width, height: self.frame.height)
        }
        scrollView.contentSize = CGSize(width: self.frame.width * CGFloat(viewArr!.count), height: self.frame.height)

        let w = self.frame.width
        let h = self.frame.height
        pageControl.frame = CGRect.init(x: (w - 80)/2, y: h - 40, width: 80, height: 40)
        self.addSubview(pageControl)
        pageControl.numberOfPages = viewArr!.count
    }

    lazy var scrollView: UIScrollView = {
        let scrol = UIScrollView.init()
        scrol.frame = self.bounds
        scrol.delegate = self
        scrol.isPagingEnabled = true
        scrol.bounces = false
        scrol.showsVerticalScrollIndicator = false
        scrol.showsHorizontalScrollIndicator = false
        return scrol
    }()

    // MARK: - delegate
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        self.pageControl.currentPage = Int(scrollView.contentOffset.x / self.frame.width)
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        self.addSubview(scrollView)
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

}