以编程方式对齐 iPhone 键盘顶部的工具栏 [英] Programmatically align a toolbar on top of the iPhone keyboard

问题描述

在某些情况下，我想在 iPhone 键盘的顶部添加一个工具栏(例如，当您在 iPhone Safari 中导航表单元素时).

In several cases I want to add a toolbar to the top of the iPhone keyboard (as in iPhone Safari when you're navigating form elements, for example).

目前我正在使用常量指定工具栏的矩形，但因为界面的其他元素在不断变化 - 屏幕顶部的工具栏和导航栏 - 每次我们对界面进行细微更改时，工具栏都会失去对齐.

Currently I am specifying the toolbar's rectangle with constants but because other elements of the interface are in flux - toolbars and nav bars at the top of the screen - every time we make a minor interface change, the toolbar goes out of alignment.

有没有办法以编程方式确定键盘相对于当前视图的位置?

Is there a way to programmatically determine the position of the keyboard in relation to the current view?

推荐答案

从 iOS 3.2 开始，有一种新方法可以实现这种效果:

As of iOS 3.2 there's a new way to achieve this effect:

UITextFields 和 UITextViews 有一个 inputAccessoryView 属性，您可以将其设置为任何视图，该视图会自动显示在上方并使用键盘进行动画处理.

UITextFields and UITextViews have an inputAccessoryView property, which you can set to any view, that is automatically displayed above and animated with the keyboard.

请注意，您使用的视图不应位于其他地方的视图层次结构中，也不应将其添加到某个超级视图中，这是为您完成的.

Note that the view you use should neither be in the view hierarchy elsewhere, nor should you add it to some superview, this is done for you.

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