使用UIAppearance和切换主题 [英] Using UIAppearance and switching themes

问题描述

我正在寻找主题我的iOS应用程序，并一直在阅读UIAppearance。我希望用户能够在应用程序内切换许多不同的视觉主题。然后，UI中将显示更改主题。

I'm looking to theme my iOS app and have been reading up on UIAppearance. I want the user to be able to switch between a number of different visual themes from within the app. Changing a theme would then be shown in the UI.

我想我可以在appDelegate.m中加载一个单独的主题文件。但在那之后我有点坚持如何实现这个？

I'm thinking I could have a theme file that is a singleton loaded within the appDelegate.m. But after that i'm a little stuck on how this could be implemented?

推荐答案

UIKit在视图后从UIAppearance代理设置属性添加到视图层次结构。

UIKit sets properties from UIAppearance proxy after view is added to views hierarchy.

在 UISS 中，我使用如下方法：

In UISS I use method like this:

- (void)reloadAppearance {
    NSArray * windows = [UIApplication sharedApplication].windows;

    for (UIWindow *window in windows) {
        for (UIView *view in window.subviews) {
            [view removeFromSuperview];
            [window addSubview:view];
        }
    }
}

另一个技巧是删除rootViewController从主窗口再次添加。虽然我更喜欢第一种解决方案，因为它涵盖了更广泛的案例。

Another trick is to remove rootViewController from main window and add it again. Though I prefer the first solution, because it covers wider range of cases.

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