iPhone UIBarButtonItem setCustomView：方法？
我想自定义 UIBarButtonItem 的背景。这是我使用的代码：
UIButton *button = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
[button setBackgroundImage:[UIImage imageNamed:@"ButtonBackground.png"] forState:UIControlStateNormal];
[editButton setCustomView:button]; // editButton is the UIBarButtonItem
不幸的是，这不起作用。它没有显示 UIBarButtonItem，而是直接消失（变得 100% 透明）。当我省略 setCustomView 方法时，会出现 UIBarButtonItem，但未自定义。
我该如何解决这个问题？
谢谢！
富有的
I want to customize a UIBarButtonItem's background. Here's the code I use:
UIButton *button = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
[button setBackgroundImage:[UIImage imageNamed:@"ButtonBackground.png"] forState:UIControlStateNormal];
[editButton setCustomView:button]; // editButton is the UIBarButtonItem
Unfortunately, this doesn't work. Instead of showing the UIBarButtonItem, it simply vanishes (it becomes 100% transparent). When I leave out the setCustomView method, the UIBarButtonItem appears, but is not customized.
How can I solve this problem?
Thanks!
Rich
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您应该尝试将
UIButton的frame 属性设置为合理的值，例如，如果没有设置框架，则添加UIView 将不会显示。这就是为什么它看起来看不见。它实际上就在那里，只是大小为 0。
You should try to set the
UIButton's frame property to something reasonable, e.g. add aUIView's will not display if they don't have a frame set. This is why it seems invisible. It's actually there, it just has a size of 0.