问题描述
不幸的是，UIBarButtonItem 没有showsTouchWhenHighlighted，我无法从工具栏编辑我的按钮...
Unfortunately there is no showsTouchWhenHighlighted for UIBarButtonItem and I can't edit my button from the toolbar...
推荐答案
负责此操作的属性可在 UIButton 类中访问:
The property responsible for this is accessible in the UIButton class:
myButton.showsTouchWhenHighlighted = NO;
您可以通过将 UIButton 分配给条形按钮项的 customView 属性并配置该按钮，在 UIBarButtonItem 中(以编程方式)访问它.您也可以在 Interface Builder 中执行此操作:将 UIButton 拖到 UIToolbar 上，它会自动为您将其嵌入 UIBarButtonItem - 然后在按钮设置下查找Shows Touch On Highlight"复选框.
You can access this (programmatically) in a UIBarButtonItem by assigning a UIButton to the bar button item's customView property, and configuring the button. You can do this in Interface Builder too: drag a UIButton onto a UIToolbar, and it will automatically embed it in a UIBarButtonItem for you - then look for the "Shows Touch On Highlight" checkbox under the button's settings.
顺便说一句，我不知道您是如何自定义按钮的，因此请随意忽略这一点，但如果您的按钮看起来和行为类似于标准工具栏项，那么用户就会期待发光效果.
Incidentally, I don't know how you're customising your buttons so feel free to ignore this, but if your button looks and behaves like a standard toolbar item then users will expect the glow effect.
来自这里的答案
编辑:
试试这个:
UIImage* buttonImage = [UIImage imageNamed: @"header.navigation.back.png"];
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setImage:buttonImage forState:UIControlStateNormal];
aButton.frame = CGRectMake(0.0, 0.0, buttonImage.size.width/2, 32);
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:aButton];
[aButton addTarget:self action:@selector(backToPriorView) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = backButton;
[backButton release];
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