如何在没有 UITextField 或 UITextView 的情况下调出 UIKeyboard? [英] How to pull up a UIKeyboard without a UITextField or UITextView?

问题描述

我目前正在为 iPhone 和 iPod touch 开发 OpenGL ES 游戏.

I'm currently developing an OpenGL ES game for the iPhone and iPod touch.

我想知道如何轻松调出 UIKeyboard?是否有官方文档可以在不使用 UITextView 的 UITextField 的情况下调出 UIKeyboard?

I was wondering how I can easily pull up the UIKeyboard? Is there an official, documented possibility to pull up a UIKeyboard without using a UITextField of UITextView?

推荐答案

这不是官方"可能的 - 在 Apple 的指导下，您根本无法访问 UIKeyboard 对象.

It's not "officially" possible - you can't access the UIKeyboard object at all while staying within Apple's guidelines.

创建一个不可见的 UITextField，然后调用 [textField becomeFirstResponder] 即可完成这项工作 - 您甚至可以先将 UITextField 子类化，然后覆盖委托方法 textField:shouldChangeCharactersInRange: 以将文本输入重定向到您想要的位置.

Creating an invisible UITextField, then calling [textField becomeFirstResponder] would do the job - you could even subclass UITextField first, then override the delegate method textField:shouldChangeCharactersInRange: to redirect the text input to where you want it to go.

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