UISearchBar覆盖清除，刷新和停止类似于safari地址栏

Question

如何自定义UISearchBar清除按钮的行为以显示刷新并停止与iOS Safari地址栏类似的图标和功能。我试图抓住UITextField，但它返回nil

extension UISearchBar {
func textFiled() -> UITextField? {
    for view in self.subviews as [UIView] {
        if let textField = view as? UITextField {
            return textField
        }
    }
    return nil
}
}

Answer 1

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