ios - 如何正确地将 UIButton 放置在已加载的 SFSafariViewController 之上？

Question

我读过很多关于 SFSafariViewController 的文章，我相信它在 iOS 应用程序中提供了出色的功能。但是，当我加载 SFSafariViewController 时，我故意隐藏导航栏，因为我希望左上角有一个自定义固定按钮来关闭 View Controller 。

    override func viewDidAppear(_ animated: Bool) {
    let safariViewController = PSSafariViewController(url: URL(string: blogUrl)!, entersReaderIfAvailable: true)
    present(safariViewController, animated: false) {
        var frame = safariViewController.view.frame
        let OffsetY: CGFloat  = 44
        frame.origin = CGPoint(x: frame.origin.x, y: frame.origin.y - OffsetY)
        frame.size = CGSize(width: frame.width, height: frame.height + OffsetY)
        safariViewController.view.frame = frame
        let btn: UIButton = UIButton(frame: CGRect(x: 100, y: 400, width: 100, height: 50))
        btn.backgroundColor = UIColor.green
        btn.setTitle("Click Me", for: .normal)
        btn.addTarget(self, action: #selector(PSBlogViewController.buttonAction), for: UIControlEvents.touchUpInside)
        btn.tag = 1 // change tag property
        btn.isOpaque = true
        safariViewController.view.addSubview(btn)
        safariViewController.view.bringSubview(toFront: btn)
        print(btn.description)
    }
}

如您所见，我更改了框架，使顶部的栏不可见。该代码运行良好。但是当我尝试添加 UIButton 时，它会短暂出现，然后在我运行应用程序时被覆盖。这是一个使用 SFSafariViewController 的简单博客阅读器应用程序。也许苹果不希望开发人员到处乱搞这个，但是任何使按钮保持可见的解决方案或变通方法都将受到高度赞赏!

这是有关按钮的信息:0x7f950b618db0；帧=(100 400；100 50)；标签=1；层= CALayer:0x60000023ab60

Answer 1

为什么不使用其他 WebView 类之一来获得您想要的额外功能？

5.1.1 (iv) SafariViewContoller must be used to visibly present information to users; the controller may not be hidden or obscured by other views or layers. Additionally, an app may not use SafariViewController to track users without their knowledge and consent.