[英]Adding multiple UIButton to multiple UIView in Swift
我在下面编写了以编程方式创建放置在不同UIView
上的多个UIButton
代码。 所有按钮在按钮标题上都相似且不同。 该代码确实完成了所需要做的工作,但是如您所见,该代码相当冗长,冗长。
题
如何构造下面的代码并使它紧凑简洁?
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)
(快速4.0)
首先 ,编写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)
}
虽然已经回答了这个问题,但我想提出另一种方法,以适应陈云的回答 。
同样,为按钮创建一个通用方法:
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)
}
然后在元组数组中列出按钮信息:
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)),
]
最后像这样创建按钮:
for buttonInfo in buttonInfos {
self.createButton(title: buttonInfo.0, toView: buttonInfo.1, action: buttonInfo.2)
}
如您所见,通过使用元组,您无需将类型转换为as! String
as! String
, as! UIView
as! UIView
等,简化并简化了代码,使其更加安全。
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