在 UITextView 委托事件之前调用的键盘事件 [英] Keyboard events called before UITextView delegate events

问题描述

我有一个 UITableView 和 UITextViews 和 UITextFields 在它的单元格上.很明显，键盘与较低的单元格重叠，您看不到正在输入的内容.所以我想滚动 tableview 以使该字段可见.我编写了 iOS 文档推荐的代码:https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html

I have a UITableView with UITextViews and UITextFields on it's cells. As obvious the keyboard overlaps the lower cells and you cannot see what you are typing. So I want to scroll the tableview to get the field visible. I wrote the code the iOS docs recommended: https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html

BUT 键盘事件回调 keyboardWillShow: 被调用 before UITextView 编辑回调 textViewDidBeginEditing:.因此，当我尝试计算使活动文本视图可见所需的滚动时，我无法设置活动文本视图.

BUT the keyboard event callback keyboardWillShow: is called before the UITextView edit callback textViewDidBeginEditing:. So I cannot set the active textview when I try to calculate the scrolling I need to make the active textview visible.

有人知道解决这个问题的方法吗?

Anyone knows a solution for this?

推荐答案

从keyboardWillShow:中取出代码，加入到keyboardDidShow:中，这显然是在它之后调用的已经呈现...

Take the code out of keyboardWillShow: and add it into keyboardDidShow: This is obviously called after it has been presented ...

如果您使用通知，则需要添加:

If you're using notifications you need to add:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];

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