选中或突出显示时全局更改UIBarButtonItem文本颜色

I have UIToolbar (inside my UINavigationController) with some UIBarButtonItems on it.

我有UIToolbar(在我的UINavigationController中),上面有一些UIBarButtonItems。

Toolbar is blue (isTranslucent = false), button is white. Default highlight color is gray and it looks ugly.

工具栏为蓝色(isTranslucent = false),按钮为白色。默认高亮颜色为灰色,看起来很难看。

The only solution I found is to change UIBarButtonItem's tintColor in @IBAction touch event. But I have many UIBarButtonItems and its pretty annoying to write a plenty of code in every @IBAction.

我找到的唯一解决方案是在@IBAction触摸事件中更改UIBarButtonItem的tintColor。但我有很多UIBarButtonItems,并且在每个@IBAction中编写大量代码都非常烦人。

Do you know how to change it globally or, at least, subclass UIBarButtonItem to define it once and use this class everywhere?

您是否知道如何全局更改它,或者至少是UIBarButtonItem的子类来定义它并在任何地方使用此类?

I use swift 3, deployment target is iOS 9+

我使用的是swift 3,部署目标是iOS 9+

2 个解决方案

#1

You have your didFinishLaunchingWithOptions function in your AppDelegate witch tells the delegate that the launch process is almost done and the app is almost ready to run.

你的AppDelegate中有你的didFinishLaunchingWithOptions函数,告诉代表启动过程已经完成,应用程序几乎准备好运行了。

And in there you can use the appearance on your UIBarButtonItem and UINavigationBar.

在那里,您可以使用UIBarButtonItem和UINavigationBar上的外观。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Text
    UIBarButtonItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.green], for: .normal)
    UIBarButtonItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.darkGray], for: .selected)

    // Images
    UINavigationBar.appearance().tintColor = UIColor.orange

    return true
}

Result:

#2

You can use appearance to change color globally. Add next lines in didFinishLaunchingWithOptions method

您可以使用外观全局更改颜色。在didFinishLaunchingWithOptions方法中添加下一行

UIBarButtonItem.appearance().setTitleTextAttributes(
    [NSForegroundColorAttributeName: UIColor.white], for: .selected)
UIBarButtonItem.appearance().setTitleTextAttributes(
    [NSForegroundColorAttributeName: UIColor.white], for: .highlighted)

#1