Question

我尝试通过实例图板实例化将pageViewController本身添加到控制器中的视图中，但是会产生以下错误代码

ViewController

func instantiate(){

    let pageController = storyboard?.instantiateViewController(withIdentifier: String(describing:PageViewController.self)) as! PageViewController

    addChild(pageController)
    pageController.didMove(toParent: self)
    pageController.view.translatesAutoresizingMaskIntoConstraints = false
    contentView.addSubview(pageController) // error Cannot convert value of type 'PageViewController' to expected argument type 'UIView'

    let views:[String:Any] = ["pageView":pageController.view]
    contentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|-0-[pageView]-0-|", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: views))
    contentView.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|-0-[pageView]-0-|", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: views))
}

Answer 1

PageController继承自UIViewController。您正在做的就是添加与视图相同的视图。这就是为什么出现错误的原因，因为该参数不是UIView。

而不是添加pageviewcontroller，而是添加嵌入其中的视图。将行更改为contentView.addSubview(pageController.view)

在其他Controller的视图中添加pagecontroller视图时出错

1 个答案: