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 和 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（请参阅属性）。
You can also set a custom UIView on the item which also mimics highlighting (see the customView property).
这篇关于以编程方式突出显示UIBarButtonItem的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！