使用循环到几个子视图（swift4）

Question

我下面的代码声明了变量，然后将它们添加到视图子视图中，同时声明了约束。我想看看我是否可以将这段代码写得更短。使用 view.addSubview(imageA)and imageA.translatesAutoresizingMaskIntoConstraints = false 我想看看是否有我可以添加所有的变量所以它像 imageA, text,textBackward.addSubview(theName)

var imageA = UIImageView()
var text = UILabel()
var theName = UILabel()
var textForward = UIButton()
var textBackward = UIButton()
var map = UIButton()
var settings = UIButton()

override func viewDidLoad() {     
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    view.addSubview(imageA)
    view.addSubview(text)

    view.addSubview(theName)
    view.addSubview(textForward)
    view.addSubview(textBackward)
    view.addSubview(map)
     view.addSubview(settings)

    imageA.translatesAutoresizingMaskIntoConstraints = false
    text.translatesAutoresizingMaskIntoConstraints = false
    textBackward.translatesAutoresizingMaskIntoConstraints = false
    settings.translatesAutoresizingMaskIntoConstraints = false
    theName.translatesAutoresizingMaskIntoConstraints = false
    map.translatesAutoresizingMaskIntoConstraints = false

    textForward.translatesAutoresizingMaskIntoConstraints = false
  }

Answer 1

您可以将所有子视图添加到一个数组中并像这样迭代

[imageA,text,theName,textForward,textBackward,map,settings].forEach({
            [=10=].translatesAutoresizingMaskIntoConstraints = false
            self.view.addSubview([=10=])
        })

Answer 2

对我来说，我喜欢将所有属性放入一个数组，并使用每个闭包来设置在闭包内调用相同的函数。

    var imageA = UIImageView()
    var text = UILabel()
    var theName = UILabel()
    var textForward = UIButton()
    var textBackward = UIButton()
    var map = UIButton()
    var settings = UIButton()

    lazy var collection = [imageA, text, theName, textForward, textBackward, map, settings]

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        collection.forEach { (view) in
            self.view.addSubview(view)
            view.translatesAutoresizingMaskIntoConstraints = false
        }
    }

如果有人使用故事板和出口也可以添加出口集合和 link 您想要的所有视图。 outlet collection

使用循环到几个子视图（swift4）

use loop to several subviews (swift4)

loops

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ios

swift4