ios - 在 Swift 中创建相同 View 的最佳方法是什么？

Question

有时我需要在 Swift 中创建相同的 View (或 ImageView)。

例如，制作相同的尺寸和图像，删除 View ，然后再次制作(有时会更改 View 的图像或尺寸)。

在这种情况下，当然每次都编写相同的代码来需要 View 是不好的。所以我想找到多次创建相同 View 的好方法。

现在我在创建相同的 ImageView 时使用此代码。

*CreateImage.swift

class aImageView: UIImageView {
    override init(frame: CGRect) {
        super.init(frame: frame)

        let aImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 70, height: 50))
        aImageView.image = UIImage(named: "item_a01_70x50")
        aImageView.tag = 100
        aImageView.isUserInteractionEnabled = true
        aImageView.backgroundColor = UIColor.lightGray
        self.addSubview(aImageView)

    }

    required init(coder aDecoder: NSCoder) {
       super.init(coder: aDecoder)!
    }

}

class bImageView: UIImageView {
        override init(frame: CGRect) {
            super.init(frame: frame)

            let bImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 70, height: 50))
            bImageView.image = UIImage(named: "item_b02_70x50")
            bImageView.tag = 200
            bImageView.isUserInteractionEnabled = true
            bImageView.backgroundColor = UIColor.lightGray
            self.addSubview(bImageView)

        }

        required init(coder aDecoder: NSCoder) {
            super.init(coder: aDecoder)!
        }

    }

*TopView.swift

    class TopView: UIView {

        var aview: aImageView!
        var bview: bImageView!

        init(frame: CGRect, stage:Int){
            super.init(frame: frame)

            aview = aImageView(frame :CGRect(x: 0, y: 0, width: 70, height: 50))
            self.addSubview(aview)

            bview = bImageView(frame :CGRect(x: 100, y: 100, width: 70, height: 50))
            self.addSubview(bview)

            //...and sometimes delete them, create them again other time, and create...

        }
    }

如果你知道更好的方法，可以告诉我吗？

谢谢。

Answer 1

我认为你可以像这样扩展UIImageView:

extension UIImageView {
    convenience init(_imageName: String = "", 
                    _frameTulpe: (x: CGFloat, y: CGFloat, w: CGFloat, h: CGFloat) = (0, 0, 0, 0), 
                           _tag: Int = 0, 
      _isUserInteractionEnabled: Bool = true, 
               _backgroundColor: UIColor = UIColor.lightGray) 
    {
        self.init(image: UIImage(named: _imageName))

        frame = CGRect(x: _frameTulpe.x, y: _frameTulpe.y, width: _frameTulpe.w, height: _frameTulpe.h)
        tag = _tag
        isUserInteractionEnabled = _isUserInteractionEnabled
        backgroundColor = _backgroundColor
    }
}

然后，在您的 TopView.swift 中将是:

class TopView: UIView {

    var aview: aImageView!
    var bview: bImageView!

    init(frame: CGRect, stage:Int){
        super.init(frame: frame)

        aview = UIImageView(_imageName: "item_a01_70x50", _frameTulpe:(0, 0, 70, 50), _tag: 100)
        self.addSubview(aview)

        bview = UIImageView(_imageName: "item_b02_70x50", _frameTulpe:(100, 100, 70, 50), _tag: 200)
        self.addSubview(bview)

        //...and sometimes delete them, create them again other time, and create...

    }
}