自定义UIBarButtonItem的较小活动区域 [英] Smaller active area for custom UIBarButtonItem

问题描述

我有一个带有自定义UIBarButtonItem的UINavigationBar（它使用UIButton作为其自定义视图）。问题是：自定义按钮的活动区域太大，如果我点击按钮外至少40个像素，它仍然会被注册为按下按钮。这导致意外敲击。如何减少这些按钮上的活动区域？

I have a UINavigationBar with a custom UIBarButtonItem (which uses a UIButton as its custom view). The problem is: the active area of the custom button is much too large, if I tap at least 40 pixels outside the button, it still gets registered as a tap on the button. This results in accidental taps. How can I reduce the active area on these buttons?

推荐答案

我也注意到了这种奇怪现象。我发现使用容器UIView修复了这个问题。例如：

I noticed this weirdness too. I found that using a container UIView fixes this. For example:

UIButton *menuButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 30)];
[menuButton addTarget:self action:@selector(revealMenu:) forControlEvents:UIControlEventTouchUpInside];
[menuButton setImage:[UIImage imageNamed:@"menuIcon"] forState:UIControlStateNormal];
UIView *menuButtonContainer = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 30, 30)];
[menuButtonContainer addSubview:menuButton];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:menuButtonContainer];

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