添加多个UIButton的多个UIView的斯威夫特

Question

我写了下面的代码编程创建多个UIButton被放置在不同的UIView。按钮标题的所有按钮都相似且不同。代码没有完成它所需要做的，但你可以看到，代码是相当冗长，它太冗长。

---

问题

我怎样组织下面的代码，使之紧凑，简洁的？

---

代码

let myButton0 = UIButton(type: UIButtonType.Custom) 
myButton0.setTitle("Text 0", forState:.Normal) 
myButton0.titleLabel!.font = UIFont.systemFontOfSize(12) 
myButton0.setTitleColor(UIColor.whiteColor(), forState: .Normal) 
myButton0.backgroundColor = UIColor.darkGrayColor() 
myButton0.frame = CGRectMake(0, 0, 200, 100) 
myButton0.alpha = 1 
myButton0.showsTouchWhenHighlighted = false 
myButton0.adjustsImageWhenHighlighted = false 
myButton0.addTarget(self, action: #selector(ViewController.goDoThis0), forControlEvents:.TouchUpInside) 
myView0.addSubview(myButton0) 

let myButton1 = UIButton(type: UIButtonType.Custom) 
myButton1.setTitle("Text 1", forState:.Normal) 
myButton1.titleLabel!.font = UIFont.systemFontOfSize(12) 
myButton1.setTitleColor(UIColor.whiteColor(), forState: .Normal) 
myButton1.backgroundColor = UIColor.darkGrayColor() 
myButton1.frame = CGRectMake(0, 0, 200, 100) 
myButton1.alpha = 1 
myButton1.showsTouchWhenHighlighted = false 
myButton1.adjustsImageWhenHighlighted = false 
myButton1.addTarget(self, action: #selector(ViewController.goDoThis1), forControlEvents:.TouchUpInside) 
myView1.addSubview(myButton1) 

let myButton2 = UIButton(type: UIButtonType.Custom) 
myButton2.setTitle("Text 2", forState:.Normal) 
myButton2.titleLabel!.font = UIFont.systemFontOfSize(12) 
myButton2.setTitleColor(UIColor.whiteColor(), forState: .Normal) 
myButton2.backgroundColor = UIColor.darkGrayColor() 
myButton2.frame = CGRectMake(0, 0, 200, 100) 
myButton2.alpha = 1 
myButton2.showsTouchWhenHighlighted = false 
myButton2.adjustsImageWhenHighlighted = false 
myButton2.addTarget(self, action: #selector(ViewController.goDoThis2), forControlEvents:.TouchUpInside) 
myView2.addSubview(myButton2) 

let myButton3 = UIButton(type: UIButtonType.Custom) 
myButton3.setTitle("Text 3", forState:.Normal) 
myButton3.titleLabel!.font = UIFont.systemFontOfSize(12) 
myButton3.setTitleColor(UIColor.whiteColor(), forState: .Normal) 
myButton3.backgroundColor = UIColor.darkGrayColor() 
myButton3.frame = CGRectMake(0, 0, 200, 100) 
myButton3.alpha = 1 
myButton3.showsTouchWhenHighlighted = false 
myButton3.adjustsImageWhenHighlighted = false 
myButton3.addTarget(self, action: #selector(ViewController.goDoThis3), forControlEvents:.TouchUpInside) 
myView3.addSubview(myButton3) 

let myButton4 = UIButton(type: UIButtonType.Custom) 
myButton4.setTitle("Text 4", forState:.Normal) 
myButton4.titleLabel!.font = UIFont.systemFontOfSize(12) 
myButton4.setTitleColor(UIColor.whiteColor(), forState: .Normal) 
myButton4.backgroundColor = UIColor.darkGrayColor() 
myButton4.frame = CGRectMake(0, 0, 200, 100) 
myButton4.alpha = 1 
myButton4.showsTouchWhenHighlighted = false 
myButton4.adjustsImageWhenHighlighted = false 
myButton4.addTarget(self, action: #selector(ViewController.goDoThis4), forControlEvents:.TouchUpInside) 
myView4.addSubview(myButton4) 

Answer 1

（SWIFT 4.0）
首先，写用于创建按钮的常用方法：

func createButton(title:String,toView:UIView,action:Selector) { 
    let myButton = UIButton(type: UIButtonType.custom) 
    myButton.setTitle(title, for:.normal) 
    myButton.titleLabel?.font = UIFont.systemFont(ofSize: 12) 
    myButton.setTitleColor(UIColor.white, for: .normal) 
    myButton.backgroundColor = UIColor.darkGray 
    myButton.frame = CGRect(x: 0, y: 0, width: 200, height: 100) 
    myButton.alpha = 1 
    myButton.showsTouchWhenHighlighted = false 
    myButton.adjustsImageWhenHighlighted = false 
    myButton.addTarget(self, action: action, for: .touchUpInside) 
    toView.addSubview(myButton) 
} 

然后创建这样的按钮：

let buttonInfos = [ 
         ["Text 0",myView0,#selector(ViewController.goDoThis0)], 
         ["Text 1",myView1,#selector(ViewController.goDoThis1)], 
         ["Text 2",myView2,#selector(ViewController.goDoThis2)], 
         ["Text 3",myView3,#selector(ViewController.goDoThis3)], 
         ["Text 4",myView4,#selector(ViewController.goDoThis4)], 
        ] 

for buttonInfo in buttonInfos { 
    self.createButton(title: buttonInfo[0] as! String, toView: buttonInfo[1] as! UIView, action: buttonInfo[2] as! Selector) 
} 

Answer 2

虽然这个问题已经回答了，但我想提供另一种方法，改编自Yun CHEN's answer。

同样，对于您的按钮创建一个通用的方法：

func createButton(title:String,toView:UIView,action:Selector) { 
    let myButton = UIButton(type: UIButtonType.custom) 
    myButton.setTitle(title, for:.normal) 
    myButton.titleLabel?.font = UIFont.systemFont(ofSize: 12) 
    myButton.setTitleColor(UIColor.white, for: .normal) 
    myButton.backgroundColor = UIColor.darkGray 
    myButton.frame = CGRect(x: 0, y: 0, width: 200, height: 100) 
    myButton.alpha = 1 
    myButton.showsTouchWhenHighlighted = false 
    myButton.adjustsImageWhenHighlighted = false 
    myButton.addTarget(self, action: action, for: .touchUpInside) 
    toView.addSubview(myButton) 
} 

然后在元组数组列出按钮信息：

let buttonInfos = [ 
         ("Text 0",myView0,#selector(ViewController.goDoThis0)), 
         ("Text 1",myView1,#selector(ViewController.goDoThis1)), 
         ("Text 2",myView2,#selector(ViewController.goDoThis2)), 
         ("Text 3",myView3,#selector(ViewController.goDoThis3)), 
         ("Text 4",myView4,#selector(ViewController.goDoThis4)), 
        ] 

最后创建像这样的按钮：

for buttonInfo in buttonInfos { 
    self.createButton(title: buttonInfo.0, toView: buttonInfo.1, action: buttonInfo.2) 
} 

正如你在你的案例中看到的那样，通过使用元组，你不需要将类型转换为as! String，as! UIView等，简化并使得代码更短，更安全。