Ios UISearchController显示问题-iPhone X和其他设备

我已经实现了

UISearchController

，并在

UIViewController

上演示了它

导航栏上有

search

按钮，单击search，屏幕顶部将显示

UISearchController

问题是，在iPhoneX中，它看起来不错，但在所有其他设备中，它的间距都不合适。

我的实现是这样的：

let searchController = UISearchController(searchResultsController: nil)

searchController.searchResultsUpdater = self
searchController.hidesNavigationBarDuringPresentation = false
searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.delegate = self
searchController.searchBar.tintColor = UIColor.white
searchController.searchBar.sizeToFit()
searchController.searchBar.placeholder = SEARCH
searchController.searchBar.barTintColor = UIColor(hex: 0x2A3442)
searchController.searchBar.becomeFirstResponder()

// Search bar UI change
for subview in searchController.searchBar.subviews {
    for innerSubview in subview.subviews {
        if innerSubview is UITextField {
            let textField = innerSubview as? UITextField
            textField?.textColor = UIColor.white
            textField?.borderStyle = .roundedRect
            textField?.backgroundColor = UIColor(hex: 0x38465A)
        }
    }
}

present(searchController, animated: true)