Swift 正向传值以及利用闭包(closure)实现反向传值(七)

概述直接上代码吧 - - Demo地址 https://github.com/Zhangjingwang1993/closureDemo.git // MainVclet button = UIButton.init(type: UIButtonType.Custom)button.frame = CGRectMake(20, 100, 50, 50);button.backgroundColo

直接上代码吧 - -
Demo地址
https://github.com/Zhangjingwang1993/closureDemo.git

// MainVclet button = UIbutton.init(type: UIbuttonType.Custom)button.frame = CGRectMake(20,100,50,50);button.backgroundcolor = UIcolor.cyancolor()self.vIEw.addSubvIEw(button)button.addTarget(self,action: Selector("click:"),forControlEvents: UIControlEvents.touchUpInsIDe)textFIEld = UITextFIEld.init(frame: CGRectMake(20,160,50));self.vIEw.addSubvIEw(textFIEld)textFIEld.placeholder = "I am Placehoder"

func addressthatTakesAClosure(string:String) ->VoID{        textFIEld.text = string    }

func click(sender: UIbutton)    {        // 初始化        let sec = MainVIEwController()        // 类似于属性传值        sec.string = "Success"        /***********************************************/        // ---------------华丽的分割线---------------- //        // 用函数把地址传过去,用于回调        // sec.initWithClosure(addressthatTakesAClosure)        // 或者直接这样        sec.myClosure = addressthatTakesAClosure        self.navigationController?.pushVIEwController(sec,animated: true)    }

// SecVc// 类似于OC中的typedef    typealias sendValueClosure = (string:String)->VoID

var string = ""    // 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addressthatTakesAClosure函数指针    func initWithClosure(closure:sendValueClosure?){        myClosure = closure    }

// 类似于OC中的属性传值    print("Success: \(string)")    let label = UILabel.init(frame: CGRectMake(10,150,30))    label.text = string    self.vIEw.addSubvIEw(label)

func backbuttonCreate()    {        // 返回按钮     var buttonRight = UIbutton()     buttonRight = UIbutton.init(type: UIbuttonType.Custom)     buttonRight.backgroundcolor = UIcolor.redcolor()     buttonRight.frame = CGRectMake(280,50)     self.vIEw.addSubvIEw(buttonRight)     buttonRight.setTitle("返回",forState: UIControlState.normal)     buttonRight.addTarget(self,action: Selector("click"),forControlEvents: UIControlEvents.touchUpInsIDe)    }

// 返回点击方法func click()    {        if myClosure != nil{            myClosure!(string: string);        }                                                    self.navigationController?.popToRootVIEwControllerAnimated(true)    }

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