Swift 版本很好的卡片切换效果基于ZLSwipeableVi

前言:在这篇文章你可以学到,一些基本的Swift语法, 基本UI控件闭包等.

实际的效果,比gif图的效果好很多.

卡片切换.gif

首先需要导入ZLSwipeableView

pod 'ZLSwipeableView', '~> 0.0.8'

下面是代码

// 1. 签协议
class ViewController: UIViewController, ZLSwipeableViewDelegate, ZLSwipeableViewDataSource {
// 2, 随便定义一个标题数组
let titles = [
    "Teame",
    "Sea",
    "Em",
    "Nes",
    "Pver",
    "Beole",
    "Amst",
    "Wisria",
    "Whalt",
    "Midue",
    "Suwer",
    "Orage",
    ]
 var index = 0
 var xtSwipeableView: ZLSwipeableView?

在viewDidLoad

        xtSwipeableView = ZLSwipeableView.init()
        xtSwipeableView!.frame = CGRectMake(55, 110, self.view.frame.size.width - 110, self.view.frame.size.height - 220)
        xtSwipeableView!.delegate = self
        xtSwipeableView!.dataSource = self
        xtSwipeableView!.translatesAutoresizingMaskIntoConstraints = false
        self.view.addSubview(xtSwipeableView!)
        self.setButton()

创建 ⬆️,⬇️,⬅️,右btn

func setButton()
    {
        var items = ["上", "下", "左", "右"]
        for i in 0...3{
            let btn = UIButton.init(type: UIButtonType.Custom)
            self.view.addSubview(btn)
            btn.frame = CGRectMake(50 + 60 * (CGFloat)(i), self.view.frame.size.height - 90, 50, 50)
            btn.setTitle(items[i], forState: UIControlState.Normal)
            btn.addTarget(self, action: "handle:", forControlEvents: UIControlEvents.TouchUpInside)
            btn.tag = i
        }
    }

btn点击方法

func handle(btn: UIButton)
    {
        let tagType = btn.tag
        switch tagType{
        case 0:
            xtSwipeableView!.swipeTopViewToUp()
        case 1:
            xtSwipeableView!.swipeTopViewToDown()
        case 2:
            xtSwipeableView!.swipeTopViewToLeft()
        case 3:
            xtSwipeableView!.swipeTopViewToRight()
        default:
            print("....")
        }
    }

loadViews

override func viewDidLayoutSubviews() {
        xtSwipeableView!.loadViewsIfNeeded()
    }

ZLSwipeableViewDataSource

func nextViewForSwipeableView(swipeableView: ZLSwipeableView!) -> UIView! {
        if self.index >= self.titles.count {
            self.index = 0
        }
        let view = CardView.init(frame: swipeableView.bounds)
        view.backgroundColor = UIColor.purpleColor()
        view.textLabel?.text = self.titles[index]
        // 闭包回调
        view .initWithClosure(addressThatTakesAClosure)
        self.index++
        return view
    }

func addressThatTakesAClosure(string:String) ->Void{
        // do you something
        print("\(string)")
    }

CardView类的实现(在这你可以定义你所需要的)

class CardView: UIView {
        typealias sendValueClosure = (string:String)->Void
        /// 声明一个Closure(闭包)
        var myClosure:sendValueClosure?
        /// 下面这个方法需要传入上个界面的someFunctionThatTakesAClosure函数指针
        func initWithClosure(closure:sendValueClosure?){
            myClosure = closure
        }
        ///
        var imagesView: UIImageView?
        var textLabel : UILabel?
        var btn: UIButton?
        ///
        override init(frame: CGRect) {
            super.init(frame: frame)
            self.setView(frame)
        }
        required init?(coder aDecoder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }
        /// setView
        func setView(frame: CGRect){
            // Shadow
            self.layer.shadowColor = UIColor.lightGrayColor().CGColor
            self.layer.shadowOpacity = 0.33
            self.layer.shadowOffset = CGSizeMake(0, 1.5)
            self.layer.shadowRadius = 4.0
            self.layer.shouldRasterize = true
            self.layer.rasterizationScale = UIScreen.mainScreen().scale
            
            // Corner Radius
            self.layer.cornerRadius = 10.0
            
            // Custom view
            imagesView = UIImageView.init(frame: CGRectMake(5, 5, self.frame.size.width - 10, self.frame.size.height / 2))
            imagesView!.backgroundColor = UIColor.whiteColor()
            self.addSubview(imagesView!)
            
            
            textLabel = UILabel.init(frame: CGRectMake(20, imagesView!.frame.size.height + 10, 120, 20))
            textLabel!.backgroundColor = UIColor.lightGrayColor()
            self.addSubview(textLabel!)
            
            btn = UIButton.init(type: UIButtonType.Custom)
            btn?.setTitle("BUTTON", forState: UIControlState.Normal)
            btn?.frame = CGRectMake(20, (textLabel?.frame.origin.y)! + 20 + 10, 100, 50)
            self.addSubview(btn!)
            btn?.addTarget(self, action: "btnClick", forControlEvents: UIControlEvents.TouchUpInside)
            
        }
        /// 这里实现了btn点击方法的回调, 回到控制器(VC),可实现跳转
        func btnClick()
        {
            if myClosure != nil{
                self.myClosure!(string: "hello World")
            }
        }
    }

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总结: 希望看到这篇文章对读者有一定Swift语言的帮助, 且完成卡片切换效果需求. 喜欢请点赞. 稍候会把项目传到github.今天有点晚了.睡了 呼呼. -.-

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demo参考(Objective-C & Swift) :
https://github.com/summerxx27/XSmomoStyle
觉得还可以请点个赞, 我要申请微博加V. 点个赞吧客官 -.-

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