Question

我的问题如下：

我有以下观点：Initial view。如您所见，此刻用户点击文本区域时，它将被键盘覆盖。因此，我实施了在其他问题中发布的此解决方案。

var moved = false
.....
override func viewWillAppear(_ animated: Bool) {
   super.viewWillAppear(animated)

   NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange(notification:)),
                                       name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)

   NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide),
                                       name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}

@objc func keyboardWillHide() {
   self.view.frame.origin.y = 0
   moved = false
}

@objc func keyboardWillChange(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
    if self.textField.isFirstResponder {
        if !moved {
            self.view.frame.origin.y = -keyboardSize.height
            moved = true
        }
    } else if self.textArea.isFirstResponder {
        if !moved {
            self.view.frame.origin.y = -keyboardSize.height
            moved = true
        }
    }
}
}

override func viewWillDisappear(_ animated: Bool) {
   super.viewWillDisappear(animated)

   NotificationCenter.default.removeObserver(self,
                                          name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
   NotificationCenter.default.removeObserver(self,
                                          name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}

当我轻按文本this happens时，如您所见，我看不到我在文本区域顶部写的内容。
如果现在我点击文本字段，然后再次点击文本区域this is how it behaves Ant，它正是我在第一步中想要的。

这就是我组织the view

的方式

键盘隐藏的错误移动视图

0 个答案: