Swift 类似网易新闻的滑动菜单

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简单实现类似这种的 滑动菜单 新手Swift新手 大神就别看了

import UIKit

class HomeViewController: UIViewController,UICollectionViewDelegate,UICollectionViewDataSource,UIScrollViewDelegate {

    let WIDTH = UIScreen.mainScreen().bounds.width / 375 let HEIGTH = UIScreen.mainScreen().bounds.height / 667 let SCREENWIDTH = UIScreen.mainScreen().bounds.width let SCREENHEIGTH = UIScreen.mainScreen().bounds.height var collectionView: UICollectionView!
    var buttonsArray: NSMutableArray!
    var titlesArray: NSMutableArray!
    var lineView: UIView!
    override func viewDidLoad() {
        super.viewDidLoad()

        self.automaticallyAdjustsScrollViewInsets = false
        self.navigationController?.automaticallyAdjustsScrollViewInsets = false

        self.initButtons()
        self.initCollectionView()
    }

    func initButtons() {

        buttonsArray = NSMutableArray()
        titlesArray = ["分类","品牌","首页","专题","品牌"]

        for var i = 0;i<titlesArray.count;i++ { let button = UIButton.init(type: .System)
            button.frame = CGRectMake(SCREENWIDTH * CGFloat (i) / 5.0,SCREENWIDTH / 5.0,40 * HEIGTH)
            button.tag = i
            button.backgroundColor = UIColor.blackColor()
            button.setTitleColor(UIColor.lightGrayColor(),forState: .Normal)
            if i == 2 {

            button.titleLabel?.font = UIFont.systemFontOfSize(16.0 * WIDTH)
            button.whiteColor(),0)">.Normal)

            }
            button.systemFontOfSize(15.0 * WIDTH)
            button.setTitle(titlesArray[i] as? String,0)">.Normal)
            button.addTarget(self,action: "click:",forControlEvents: .TouchUpInside)
            self.view.addSubview(button)
            buttonsArray.addObject(button)

        }
        lineView = UIView.init(frame: CGRectMake(15 * WIDTH + (SCREENWIDTH / 5.0) * 2,38 * HEIGTH,SCREENWIDTH / 5.0 - 30 * WIDTH,2 * HEIGTH))
        lineView.whiteColor()
        self.addSubview(lineView)

    }
    func click (btn: UIButton) {

        for btt in buttonsArray {

            btt.titleLabel?!.systemFontOfSize(15)
            btt.Normal)
        }

        btn.systemFontOfSize(16 * WIDTH)
        btn.Normal)
        self.collectionView.scrollToItemAtIndexPath(NSIndexPath.init(forItem: btn.tag,inSection: 0),atScrollPosition: .None,animated: true)

        UIView.animateWithDuration(0.3,animations: { () -> Void in

            self.lineView.frame = CGRectMake(15 * WIDTH + (UIScreen.mainScreen().bounds.width / 5.0) * CGFloat (btn.tag),UIScreen.width / 5.0 - 30 * WIDTH,2)

            }) {(Bool) -> Void in

            }
    }

    func initCollectionView() {

        let flowLayout = UICollectionViewFlowLayout()
        flowLayout.scrollDirection = .Horizontal
        flowLayout.itemSize = CGSizeMake(UIScreen.width,0)">.height - 88 * HEIGTH)
        flowLayout.minimumLineSpacing = 0
        flowLayout.minimumInteritemSpacing = 0

        collectionView = UICollectionView.init(frame: CGRectMake(0,40 * HEIGTH,0)">.height - 88 * HEIGTH),collectionViewLayout: flowLayout)
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.pagingEnabled = true
        collectionView.init(forRow: 2,animated: true)
        self.addSubview(collectionView)
        collectionView.registerClass(HomeCollectionViewCell.classForKeyedArchiver(),forCellWithReuseIdentifier: "hCell")
        collectionView.registerClass(KindCollectionViewCell.registerClass(BrandCollectionViewCell.registerClass(SubjectCollectionViewCell.registerClass(GiftCollectionViewCell.item == 0 {
            let cell = collectionView.dequeueReusableCellWithReuseIdentifier("kCell",forIndexPath: indexPath) as! KindCollectionViewCell

            weak var weakSelf = self
            cell.initClosure({ (str) -> Void? in

//                let url = "http://mobile.iliangcang.com/goods/goodsShare?a=b&page=1&count=10&coverId=1&cat_code=$&app_key=iPhone&v=3.0.0&sig=97E9576F-B96F-48FD-BE0E-CD84610BC975"

                let common = CommonViewController()
//                common.urlStr = url.stringByReplacingOccurrencesOfString("$",withString: str)
                common.urlStr = str
                common.hidesBottomBarWhenPushed = true
                weakSelf!.pushViewController(common,animated: true)
                return nil
             })

            return cell

        }else if indexPath.item == 1 {
            let cell = collectionView.dequeueReusableCellWithReuseIdentifier("bCell",forIndexPath: indexPath) as! BrandCollectionViewCell
            return cell
        }else if indexPath.item == 2 {
            let cell = collectionView.dequeueReusableCellWithReuseIdentifier("hCell",forIndexPath: indexPath) as! HomeCollectionViewCell
            cell.myClosure = { (content_id: String) -> Void in

                let shopVC = ShopViewController()
                let url = "http://mobile.com/goods/goodsList?a=b&list_id=$&count=10&page=1&app_key=iPhone&v=3.0.0&sig=97E9576F-B96F-48FD-BE0E-CD84610BC975"
                shopVC.pushViewController(shopVC,animated: true)
            }
            return cell
        }else if indexPath.item == 3 {

            let cell = collectionView.dequeueReusableCellWithReuseIdentifier("sCell",forIndexPath: indexPath) as! SubjectCollectionViewCell

            return cell

        }else {

            let cell = collectionView.dequeueReusableCellWithReuseIdentifier("gCell",forIndexPath: indexPath) as! GiftCollectionViewCell

            return cell

        }

    }

    func scrollViewDidEndDecelerating(scrollView: UIScrollView) {

        for btt in buttonsArray {

            btt.Normal)
        }

        UIView.animateWithDuration(0.3) { () -> Void in

        self.width / 5.0) * CGFloat (self.contentOffset.x / (UIScreen.width)),2)
        }

        let btn = buttonsArray.objectAtIndex(Int(self.x / UIScreen.width))

        btn.Normal)

    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}