如何为自定义视图设置 canBecomeFocused [英] How do you set canBecomeFocused for a custom view

问题描述

我正在为 tvOS 制作应用程序.我有一个包含 UIButton 的视图和一个包含其他几个自定义视图的自定义 UIView .模拟器只能突出显示 UIButton 而不是自定义视图.

I am making an application for tvOS. I have a view that contains a UIButton and a custom UIView that contains a couple other custom views. The simulator is only able to highlight the UIButton and not the custom view.

根据构建 Apple TV 应用文档:

如果您的自定义视图需要可聚焦，请覆盖 canBecomeFocused 以返回 YES(默认情况下，它返回 NO).

If your custom view needs to be focusable, override canBecomeFocused to return YES (by default, it returns NO).

根据canBecomeFocused 文档:

canBecomeFocused 将返回

canBecomeFocused will return

YES，如果视图可以聚焦；否，否则.

YES if the view can become focused; NO otherwise.

但是，尝试通过这样做将 YES 分配给 canBecomeFocused:

However, attempting to assign YES to canBecomeFocused by doing this:

self.customView.canBecomeFocused = YES;

出现此错误:

No setter method 'setCanBecomeFocused:' for assignment to property

我该如何实现?

推荐答案

看起来 UIView 声明了函数/属性.

It looks like UIView declares the function/property.

您是否尝试过覆盖这样的功能?

Have you tried overriding the function like so?

override func canBecomeFocused() -> Bool {
    return true
}

目标-C

- (BOOL)canBecomeFocused {
    return YES;
}

我没试过这个，但它可能对你有用.

I haven't tried this, but it may work for you.

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