键盘弹出时如何移动整个视图？ (迅速)

底部的灰色框是文本视图.当我点击文本视图时,键盘将从底部弹出.但是,弹出键盘已覆盖文本视图.

当键盘弹出时,我应该添加什么功能才能向上移动整个视图？

要检测键盘何时显示,您可以收听NSNotificationCenter

NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillShow:", name: UIKeyboardWillShowNotification, object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector: “keyboardWillHide:", name: UIKeyboardWillHideNotification, object: nil)

那会调用keyboardWillShow和keyboardWillHide.在这里,您可以使用UITextfield完成所需的操作

func keyboardWillShow(notification: NSNotification) {
    if let userInfo = notification.userInfo {
        if let keyboardSize = (userInfo[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
            //use keyboardSize.height to determine the height of the keyboard and set the height of your textfield accordingly
        }
    }
}

func keyboardWillHide(notification: NSNotification) {
    //pull everything down again
}