Question

我在子视图中有两个文本字段，当我在子视图和键盘内点击任何文本字段时，我试图移动子视图。问题是当子视图启动时，子视图向下移动，我点击了第二个文本字段。当我触摸除textfields之外的任何视图时它应该隐藏。

我的两个文本域和子视图的定义;

@IBOutlet weak var emailTextField: UITextField!
@IBOutlet weak var passwordTextField: UITextField!
@IBOutlet weak var loginView: UIView!

viewDidLoad中的代码

    NotificationCenter.default.addObserver(self, selector:#selector(keyboardWillShow), name: .UIKeyboardWillShow, object: nil)

    NotificationCenter.default.addObserver(self, selector:#selector(keyboardWillHide), name: .UIKeyboardWillShow, object: nil)

另外两个显示和隐藏键盘的功能

func keyboardWillShow(notification: NSNotification) {

    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        if loginView.frame.origin.y == 0{
            let height = keyboardSize.height

            self.loginView.frame.origin.y += height
        }

    }

}

func keyboardWillHide(notification: NSNotification) {


    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        if loginView.frame.origin.y != 0 {
            let height = keyboardSize.height
            self.loginView.frame.origin.y -= height
        }

    }
}

我想知道当子视图启动时单击文本字段时如何避免子视图下载。

Answer 1

键盘关闭时，只需将y-origin视图设为零即可。当键盘打开时点击其他textField，这是。 func keyboardWillHide（通知：NSNotification）{

func keyboardWillShow(notification: NSNotification) {

    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        if loginView.frame.origin.y == 0{
            let height = keyboardSize.height

            self.loginView.frame.origin.y = -height
        }

    }

}

    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        if loginView.frame.origin.y != 0 {
            let height = keyboardSize.height
            self.loginView.frame.origin.y = 0
        }

    }
}

当键盘显示在子视图中的文本字段上时，移动子视图

1 个答案: