更改整个项目的 UILabel 的文本颜色 [英] change UILabel's text color for total project

问题描述

我想更改整个应用程序的所有 UILabel 文本颜色，我该怎么做.是否有任何简单的方法可以更改标签颜色.

i want to change all the UILabel's text color for total app how can i do this .is there any simple way to change label color.

我试过这个，但我想改变在每个班级写这段代码

i tried this ,but i want to change write this code in every class

for( UIView *view in [testScroll subviews])
    {
        if([view isKindOfClass:[UILabel class]])
        {
            [(UILabel *)view setTextColor:[UIColor whiteColor]];

        }
        else if([view isKindOfClass:[UIView class]])

    }

谁有简单的方法.

推荐答案

好吧，如果您的目标是 iOS 5+，那么您可以非常轻松地做到这一点(在您的 appdelegate 中):

Well if you're targeting iOS 5+ you could do that really easy (inside you appdelegate):

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    //...

    //This color will affect every label in your app
    [[UILabel appearance] setTextColor:[UIColor redColor]]; 

    //...

    return YES;
}

这是可行的，因为 UILabel 符合 UIAppearance 协议，所以你可以像这样自定义任何符合协议的类.有关此这里有一个很好的教程可以帮助您入门 和 这里是 Apple 的协议文档

This works because UILabel conforms to UIAppearance protocol, so you could customize any class that conforms to the protocol like this. For more information on this here is a nice tutorial to get you started and here is Apple's docs on the protocol

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