以编程方式突出显示UIBarButtonItem [英] programmatically highlight UIBarButtonItem

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问题描述

点击'record'BarButtonItem后,我想保持它以编程方式突出显示,直到录音结束。

after tapping the 'record' BarButtonItem I would like to keep it programmatically highlighted until the recording is over. The highlighting graphics of iOS are very good, therefor I would like to remain or set that state.

到目前为止,我发现'setSelected'和'setHighlighted',但这些都是不工作在UIBarButtonItem。
有关如何解决这个问题的任何建议?提前感谢Koen。

Up to now I found 'setSelected' and 'setHighlighted' but these do not work on a UIBarButtonItem. Any suggestions on how to solve this? Thank you in advance, Koen.

推荐答案

setSelected setHighlighted 在UIControls工作,但不是UIBarButtonItems(这不是UIControls)。

setSelected and setHighlighted work fine on UIControls, but not UIBarButtonItems (which are not UIControls).

我建议使用UIBarButtonItem的 (文档链接)方法将背景图片更改为模拟突出显示的内容。

I'd recommend using UIBarButtonItem's - (void)setBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics (documentation linked) method to change the background image to something that mimics highlighting.

UIView的项目,也模仿突出显示(请参阅 customView 属性)。

You can also set a custom UIView on the item which also mimics highlighting (see the customView property).

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