IBInspectable与Cocoa Touch Framework无法正常工作？(附代码)

Question

我似乎无法获得"titleText"IBInspectable属性.我有一个带有UILabel的简单框架视图,我创建了一个IBInspectable变量"titleText".我注意到可检查的"层"变量按预期工作,但不是我的自定义"titleText",它应该使用此框架更新主视图.

问题是:

1. Interface Builder没有更新titleLabel？(即在设计时),即我希望这应该,就像它适用于"层"项目.

2. 在运行时,titleLabel的值也没有获取我在IB中设置的值.请注意,当我运行时,我得到以下输出,即产生这个的代码是发现"self.titleLabel"实际上是零？

代码摘要

(a)gcCustomView.xib快照

(b)gcCustomerView.swift

import UIKit

@IBDesignable 
class gcCustomView: UIView {

    @IBOutlet weak var titleLabel: UILabel!
    @IBInspectable var titleText: String = "Default" {
        didSet {
            if  self.titleLabel != nil {
                self.titleLabel.text = titleText
            } else {
                NSLog("Could not set title text as label.text was nil : was trying to set to \(titleText)")
            }
        }
    }


    @IBInspectable var cornerRadius: CGFloat = 0 {
        didSet {
            layer.cornerRadius = cornerRadius
            layer.masksToBounds = cornerRadius > 0
        }
    }
    @IBInspectable var borderWidth: CGFloat = 0 {
        didSet {
            layer.borderWidth = borderWidth
        }
    }
    @IBInspectable var borderColor: UIColor? {
        didSet {
            layer.borderColor = borderColor?.cgColor
        }
    }


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

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

    // Private

    func commitInit() {
        if self.subviews.count == 0 {
            print("Loading Nib")
            //let bundle = Bundle(forClass: self.dynamicType)
            let bundle = Bundle(for: type(of: self))
            let nib = UINib(nibName: "gcCustomView", bundle: bundle)
            let view = nib.instantiate(withOwner: self, options: nil)[0] as! UIView
            view.frame = bounds
            view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
            addSubview(view)
        }
    }

}

(c)Main.storyboard Snapshot

Answer 1

选择gcCustomView.xib File's Owner将类名称更改为gcCustomerView。

右键单击Label从 拖动outlet到File Owner

现在如果你右键单击它应该看起来像这样Label

我做了一个演示项目。工作正常。如果您仍然有问题，请告诉我。我将在 Github 上上传我的演示项目。