如何将UIAppearance代理属性应用于UILabel？ [英] How do I apply UIAppearance Proxy properties to UILabel?

问题描述

在尝试将UIAppearance代理样式应用于UILabel类代理时，我得到了不可靠的结果。例如，以下工作正如我所料：

I have been getting unreliable results while trying to apply UIAppearance proxy styles to the UILabel class proxy. For example, the following works as I would expect:

[[UILabel appearance] setFont:[UIFont fontWithName:SOME_FONT size:SOME_SIZE]];
[[UILabel appearance] setShadowColor:[UIColor blackColor]];

设置textColor不起作用，但是，这个：

Setting the textColor doesn't work, however, this:

[[UILabel appearance] setColor:[UIColor greenColor]];

确实有效。 种。它有点不可靠，导致任何特定于实例的调用 setTextColor：被忽略。

does work. Kind of. It's somewhat unreliable and causes any instance-specific calls to setTextColor: to be ignored.

正确的方法是什么将UIAppearance样式应用于UILabel？

What is the correct way to apply UIAppearance styles to a UILabel?

推荐答案

好的，事实证明你无法设置任何UILabel属性的样式使用 UIAppearance 代理。

OK, it turns out that you cannot style any UILabel properties using the UIAppearance proxy.

虽然 UILabel class符合 UIAppearanceContainer 协议，对UILabel.h的检查显示其属性均未标记为 UI_APPEARANCE_SELECTOR ，使用 UIAppearance 的先决条件。

While the UILabel class conforms to the UIAppearanceContainer protocol, a check of UILabel.h shows that none of its properties are marked with UI_APPEARANCE_SELECTOR, the prerequisite for the use of UIAppearance.

Bugger。

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