我已经通过.Xib文件创建了一个自定义视图。当我以编程方式创建视图并将其添加到我的ViewController时,它可以正常工作。但是,如果我在Interface Builder中创建一个UIView并将该类设置为CustomView类并运行它,它将不会显示。

这是我的CustomView类中的代码:

@IBOutlet var view: UIView!

init() {
    super.init(frame:CGRect.zero)
    setup()
}

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

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


func setup() {
    Bundle.main.loadNibNamed("CustomView", owner: self, options: nil)
    view.backgroundColor = UIColor(red: 10.0/255.0, green: 30.0/255.0, blue: 52.0/255.0, alpha: 1.0)
    view.translatesAutoresizingMaskIntoConstraints = false
    view.isUserInteractionEnabled = true
}


func presentInView(superView:UIView) {

    superView.addSubview(view)

    // Define Constraints
    let height = NSLayoutConstraint(item: view, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 90.0)
    view.addConstraint(height)

    let topConstraint = NSLayoutConstraint(item: view, attribute: .top, relatedBy: .equal, toItem: superView, attribute: .top, multiplier: 1.0, constant: 0.0)
    let leftConstraint = NSLayoutConstraint(item: view, attribute: .left, relatedBy: .equal, toItem: superView, attribute: .left, multiplier: 1.0, constant: 0.0)
    let rightConstraint = NSLayoutConstraint(item: view, attribute: .right, relatedBy: .equal, toItem: superView, attribute: .right, multiplier: 1.0, constant: 0.0)
    superView.addConstraints([topConstraint,leftConstraint, rightConstraint])
}

.Xib文件中,我将Files Owner的类设置为CustomView,并将IBOutlet view连接到.Xib的主视图。

在我的ViewController中,我这样做是为了向其中添加CustomView:
let customView = CustomView()
customView.presentInView(superView: self.view)

当我在Interface Builder中添加UIView时,它应该像我以编程方式进行操作时一样工作。

最佳答案

您是否在Interface Builder中将CustomView类分配给uiview。

ios - 用Xib创建的自定义 View 在Interface Builder中不起作用-LMLPHP

10-08 07:20