Question

我创建了一个自定义UIView，我使用对象ConnectDetailItem实例化。

我的自定义视图代码：

.as-console-wrapper{top:0;max-height:100%!important;}

在class InfosConnectView: UIView { var view: UIView! @IBOutlet weak var categorie: UILabel! @IBOutlet weak var distance: UILabel! @IBOutlet weak var followers: UILabel! @IBOutlet weak var descriptionTextView: UITextView! var connectDetailsItem:ConnectDetailsItem! convenience init(connectDetailsItem:ConnectDetailsItem, frame:CGRect) { self.init(frame: frame) self.connectDetailsItem = connectDetailsItem xibSetup() } override init(frame: CGRect) { super.init(frame: frame) } required init(coder aDecoder: NSCoder) { super.init(coder: aDecoder)! } func xibSetup() { view = loadViewFromNib() // use bounds not frame or it'll be offset view.frame = bounds // Make the view stretch with containing view view.autoresizingMask = [UIViewAutoresizing.flexibleWidth, UIViewAutoresizing.flexibleHeight] view.layer.borderWidth = 1 view.layer.borderColor = UIColor(hex: "#DDDDDD").cgColor // Adding custom subview on top of our view (over any custom drawing > see note below) addSubview(view) } func loadViewFromNib() -> UIView { let bundle = Bundle(for: type(of: self)) let nib = UINib(nibName: "viewInfosConnect", bundle: bundle) let view = nib.instantiate(withOwner: self, options: nil)[0] as! UIView return view } override func awakeFromNib() { super.awakeFromNib() //Infos Connect self.categorie.text = "\(self.connectDetailsItem.category)" self.categorie.text = "\(self.connectDetailsItem.category)" if (self.connectDetailsItem.distance < 1000) { self.distance.text = "\(self.connectDetailsItem.distance) m" } else { let distance:NSString = NSString(format: "%.01f", Float(self.connectDetailsItem.distance)/1000) self.distance.text = "\(distance) km" } if(self.connectDetailsItem.followCount < 2) { if(self.connectDetailsItem.followCount < 1) { self.followers.text = "0 abonné" } else { self.followers.text = "\(self.connectDetailsItem.followCount) abonné" } } else { self.followers.text = "\(self.connectDetailsItem.followCount) abonnés" } self.descriptionTextView.text = self.connectDetailsItem.description } }中，awakeFromNib()为connectDetailItem。为什么？

我实现了我的观点：nil

我设置了断点，在进入awakeFromNib函数之前，connectDetailItem不是nil。

Answer 1

我找到了解决方案。我将代码放在函数loadViewFromNib中，如下所示：

func loadViewFromNib() -> InfosConnectView {

        let bundle = Bundle(for: type(of: self))
        let nib = UINib(nibName: "viewInfosConnect", bundle: bundle)
        let view = nib.instantiate(withOwner: self, options: nil)[0] as! InfosConnectView

        //Infos Connect
        view.categorie.text = "\(self.connectDetailsItem.category)"
        if (self.connectDetailsItem.distance < 1000) {
            view.distance.text = "\(self.connectDetailsItem.distance) m"
        } else {
            let distance:NSString = NSString(format: "%.01f", Float(self.connectDetailsItem.distance)/1000)
            view.distance.text = "\(distance) km"
        }
        if(self.connectDetailsItem.followCount < 2) {
            if(self.connectDetailsItem.followCount < 1) {
                view.followers.text = "0 abonné"
            } else {
                view.followers.text = "\(self.connectDetailsItem.followCount) abonné"
            }
        } else {
            view.followers.text = "\(self.connectDetailsItem.followCount) abonnés"
        }
        view.descriptionTextView.text = self.connectDetailsItem.description

        return view
    }

变量在awakeFromNib中为零

1 个答案: