如何在具有不同内容的控制器中多次使用自定义UIView？

debugcn 发表于 Dev

Pogbamessi

我已经为必须在屏幕上显示的弹出窗口创建了自己的自定义UIView。我的UIView看起来像这样：

class HelpTipsPopover: UIView {

weak var title: UILabel!
weak var myText: UILabel!

override init(frame: CGRect) {
    super.init(frame: frame)

    let strongTitle = UILabel()
    title = strongTitle
    let strongMyText = UILabel()
    myText = strongMyText

    self.addSubview(strongTitle)
    title.translatesAutoresizingMaskIntoConstraints = false
    if selected == true{
    title.text = "Search"
    title.font = UIFont(name: "HelveticaNeue-Bold", size: 12)
    title.textColor = UIColor.TRLMBlueBlackColor()


    let leftConstraint = NSLayoutConstraint(item: title, attribute: .Leading, relatedBy: .Equal, toItem: self, attribute: .Leading, multiplier: 1.0, constant: 10)
    let topConstraint = NSLayoutConstraint(item: title, attribute: .Top, relatedBy: .Equal, toItem: self, attribute: .Top, multiplier: 1.0, constant: 10)
    self.addConstraints([leftConstraint, topConstraint])

    self.addSubview(strongMyText)
    myText.translatesAutoresizingMaskIntoConstraints = false
    myText.text = "Search equities to view the order book and market prints for specific moments in time."
    myText.numberOfLines = 0
    myText.lineBreakMode = NSLineBreakMode.ByWordWrapping
    myText.font = UIFont(name: "Helvetica Neue", size: 12)
    myText.textColor = UIColor.TRLMBlueBlackColor()



    let leftDescription = NSLayoutConstraint(item: myText, attribute: .Leading, relatedBy: .Equal, toItem: self, attribute: .Leading, multiplier: 1.0, constant: 10)
    let rightDescription = NSLayoutConstraint(item: myText, attribute: .Trailing, relatedBy: .Equal, toItem: self, attribute: .Trailing, multiplier: 1.0, constant: 10)
    let topDescription = NSLayoutConstraint(item: myText, attribute: .Top, relatedBy: .Equal, toItem: title, attribute: .Bottom, multiplier: 1.0, constant: 5)
    self.addConstraints([leftDescription, topDescription, rightDescription])

}

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

}

现在，我必须在视图控制器中显示三个弹出窗口，每个弹出窗口中的标题和文本都不同。这是我的View Controller中显示这些弹出框的方法：

 func showPopover(){
    self.view.addSubview(helpTipsPopover)
    helpTipsPopover.tag = 1
    helpTipsPopover.translatesAutoresizingMaskIntoConstraints = false
    helpTipsPopover.layer.cornerRadius = 6
    helpTipsPopover.backgroundColor = UIColor(white: 1.0, alpha: 0.8)
    let leftConstraint = NSLayoutConstraint(item: helpTipsPopover, attribute:       .Leading, relatedBy: .Equal, toItem: self.view, attribute: .Leading, multiplier: 1.0, constant: 10)
    let topConstraint = NSLayoutConstraint(item: helpTipsPopover, attribute: .Top, relatedBy: .Equal, toItem: self.hotSpotOne, attribute: .Bottom, multiplier: 1.0, constant: 4)
    let widthConstraint = NSLayoutConstraint(item: helpTipsPopover, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1.0, constant: 200)
    let heightConstraint = NSLayoutConstraint(item: self.helpTipsPopover, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1.0, constant: 80)
    self.view.addConstraints([leftConstraint, topConstraint, widthConstraint, heightConstraint])
    }


func showPopoverTwo(){
    self.view.addSubview(helpTipsPopover)
    helpTipsPopover.tag = 1
    helpTipsPopover.translatesAutoresizingMaskIntoConstraints = false
    helpTipsPopover.layer.cornerRadius = 6
    helpTipsPopover.backgroundColor = UIColor(white: 1.0, alpha: 0.8)
    let centerConstraint = NSLayoutConstraint(item: helpTipsPopover, attribute: .CenterX, relatedBy: .Equal, toItem: self.view, attribute: .CenterX, multiplier: 1.0, constant: 0)
    let topConstraint = NSLayoutConstraint(item: helpTipsPopover, attribute: .Top, relatedBy: .Equal, toItem: self.hotSpotTwo, attribute: .Bottom, multiplier: 1.0, constant: 4)
    let widthConstraint = NSLayoutConstraint(item: helpTipsPopover, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1.0, constant: 200)
    let heightConstraint = NSLayoutConstraint(item: self.helpTipsPopover, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1.0, constant: 80)
    self.view.addConstraints([centerConstraint, topConstraint, widthConstraint, heightConstraint])

}

现在，我要实现以下目标：

因此，每个弹出窗口都应具有不同的标题和文本，但我想重用相同的UIView。任何帮助表示赞赏。谢谢！

大卫·史密斯

修改您的初始化方法

init(frame: CGRect, titleString: String, bodyString: String) {
  super.init(frame: frame)
  // Your current initializer

  title.text = titleString
  myText.text = bodyString

}

然后，您可以像这样初始化弹出窗口：

let frame = CGRectMake(0,0,180,100)
let titleString = "My Custom Title"
let bodyString = "This is a body. I'm explaining things to you here."
helpTipsPopoverOne = HelpTipsPopover(frame: frame, titleString: titleString, bodyString: bodyString)

修改您的显示方法以将弹出窗口作为参数。然后，您可以创建弹出窗口，并以任何您想要的文本显示！

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