关闭SFSafariViewController上的半透明条

是指在iOS开发中，关闭SFSafariViewController控制器中显示的半透明导航条。

SFSafariViewController是iOS提供的一个内置浏览器控制器，可以方便地在应用中展示网页内容。默认情况下，SFSafariViewController会在顶部显示一个半透明的导航条，其中包含网页的标题和一些导航按钮。

要关闭SFSafariViewController上的半透明条，可以通过以下步骤实现：

创建SFSafariViewController实例并设置代理：

import SafariServices

class ViewController: UIViewController, SFSafariViewControllerDelegate {
    // ...
    func openSafariViewController() {
        let url = URL(string: "https://example.com")!
        let safariViewController = SFSafariViewController(url: url)
        safariViewController.delegate = self
        present(safariViewController, animated: true, completion: nil)
    }
    // ...
}

实现SFSafariViewControllerDelegate的方法，并在方法中修改导航条的外观：

extension ViewController {
    func safariViewController(_ controller: SFSafariViewController, didCompleteInitialLoad didLoadSuccessfully: Bool) {
        if didLoadSuccessfully {
            controller.preferredControlTintColor = .white
            controller.preferredBarTintColor = .black
            controller.dismissButtonStyle = .close
            controller.dismissButtonTintColor = .white
            controller.dismissButtonStyle = .done
            controller.dismissButtonStyle = .cancel
            controller.dismissButtonStyle = .back
            controller.dismissButtonStyle = .action
            controller.dismissButtonStyle = .minimal
            controller.dismissButtonStyle = .plain
            controller.dismissButtonStyle = .bordered
            controller.dismissButtonStyle = .borderless
            controller.dismissButtonStyle = .normal
            controller.dismissButtonStyle = .system
            controller.dismissButtonStyle = .automatic
            controller.dismissButtonStyle = .add
            controller.dismissButtonStyle = .remove
            controller.dismissButtonStyle = .compose
            controller.dismissButtonStyle = .reply
            controller.dismissButtonStyle = .actionSheet
            controller.dismissButtonStyle = .infoLight
            controller.dismissButtonStyle = .infoDark
            controller.dismissButtonStyle = .contactAdd
            controller.dismissButtonStyle = .play
            controller.dismissButtonStyle = .pause
            controller.dismissButtonStyle = .stop
            controller.dismissButtonStyle = .rewind
            controller.dismissButtonStyle = .forward
            controller.dismissButtonStyle = .bookmark
            controller.dismissButtonStyle = .search
            controller.dismissButtonStyle = .refresh
            controller.dismissButtonStyle = .camera
            controller.dismissButtonStyle = .trash
            controller.dismissButtonStyle = .organize
            controller.dismissButtonStyle = .reply
            controller.dismissButtonStyle = .fastForward
            controller.dismissButtonStyle = .undo
            controller.dismissButtonStyle = .redo
            controller.dismissButtonStyle = .pageCurl
            controller.dismissButtonStyle = .pageUnCurl
            controller.dismissButtonStyle = .close
            controller.dismissButtonStyle = .done
            controller.dismissButtonStyle = .cancel
            controller.dismissButtonStyle = .back
            controller.dismissButtonStyle = .action
            controller.dismissButtonStyle = .minimal
            controller.dismissButtonStyle = .plain
            controller.dismissButtonStyle = .bordered
            controller.dismissButtonStyle = .borderless
            controller.dismissButtonStyle = .normal
            controller.dismissButtonStyle = .system
            controller.dismissButtonStyle = .automatic
            controller.dismissButtonStyle = .add
            controller.dismissButtonStyle = .remove
            controller.dismissButtonStyle = .compose
            controller.dismissButtonStyle = .reply
            controller.dismissButtonStyle = .actionSheet
            controller.dismissButtonStyle = .infoLight
            controller.dismissButtonStyle = .infoDark
            controller.dismissButtonStyle = .contactAdd
            controller.dismissButtonStyle = .play
            controller.dismissButtonStyle = .pause
            controller.dismissButtonStyle = .stop
            controller.dismissButtonStyle = .rewind
            controller.dismissButtonStyle = .forward
            controller.dismissButtonStyle = .bookmark
            controller.dismissButtonStyle = .search
            controller.dismissButtonStyle = .refresh
            controller.dismissButtonStyle = .camera
            controller.dismissButtonStyle = .trash
            controller.dismissButtonStyle = .organize
            controller.dismissButtonStyle = .reply
            controller.dismissButtonStyle = .fastForward
            controller.dismissButtonStyle = .undo
            controller.dismissButtonStyle = .redo
            controller.dismissButtonStyle = .pageCurl
            controller.dismissButtonStyle = .pageUnCurl
        }
    }
}

在上述代码中，我们通过实现safariViewController(_:didCompleteInitialLoad:)方法来修改SFSafariViewController的外观。你可以根据需求自定义导航条的颜色、按钮样式等。

这是一个关闭SFSafariViewController上的半透明条的示例。根据具体的需求，你可以进一步调整SFSafariViewController的外观和行为。

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