如何在页面控件中获取当前显示的UItextField的实例

Question

如何在UItextField中获取当前显示的PageControl的实例，因为我正在UItextField分配UItextField PageControl的实例' Add reference to Microsoft Internet Controls (SHDocVw) ' Add reference to Microsoft HTML Object Library Dim anchors As IHTMLElementCollection Dim anchor As HTMLAnchorElement Set anchors = htmlDoc.getElementsByTagName("a") For Each anchor In anchors ' anchor.Click ... this probably won't work ' I gues something like this is what you want (untested code) ie.navigate anchor.href, 1 ' BrowserNavConstants.navOpenInNewTab Next anchor 1}}

Answer 1

您需要使用类型转换。这段代码会这样做： 首先，您需要设置UITextField的tag属性，如

yourTextField.tag = 123

现在您可以使用像

这样的标记属性来获取yourTextField

if let theTextField = self.view.viewWithTag(123) as? UITextField {
    theLabel.text = "some text"
}