如何实现自定义键盘的设置包?-Howtoimplementsettingsbundleforcustomkeyboard?

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I haven't worked with a keyboard extension yet, but ran into a similar issue with both a Today and a WatchKit extension. The NSUserDefaultsDidChangeNotification only posts in the same process that made the change. So, a change inside the iPhone app settings doesn't trigger that notification to observers in the extension process(es).

我还没有开发过键盘扩展，但遇到过类似的问题，包括a Today和WatchKit扩展。nsuserdefaultschangenotification只发布在进行更改的过程中。因此，iPhone应用程序设置中的一个更改不会触发对扩展过程中的观察者的通知。

However, Darwin notifications (CFNotificationCenterGetDarwinNotifyCenter) do post to other processes.

然而，达尔文通知(cfnotificationcentergetdarwinfycenter)确实会发送到其他进程。

Here's a gist of catching NSUserDefaultsDidChangeNotification inside the iPhone app, posting a Darwin notification for the extension(s), catching it inside the extension and finally converting it to a standard NSNotification for easier consumption: https://gist.github.com/phatblat/f640416c15e11b685511

下面是在iPhone应用程序中捕获NSUserDefaultsDidChangeNotification的要点，它会发布一个关于扩展名的达尔文通知，在扩展名中捕获它，最后把它转换成标准的NSNotification以便更容易使用:https://gist.github.com/phatblat/f640416c15e11b685511

Note, that you can't send any userInfo in a Darwin notification, so you still need to provision an app group and stand up an NSUserDefaults instance with initWithSuiteName: with your app group identifier.

注意，您不能在Darwin通知中发送任何userInfo，因此仍然需要提供一个应用程序组，并使用initWithSuiteName:使用应用程序组标识符创建一个NSUserDefaults实例。

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In your class KeyboardViewController: UIInputViewController of your keyboard itself, you should add the notification code that you wrote. Where are you writing it now?

在你的类KeyboardViewController: UIInputViewController你的键盘本身，你应该添加你写的通知代码。你现在在哪里写?

It is the UIInputViewController subclass that runs when the keyboard is used, not just when the app is run. Also you might want to just load the NSUserDefaults stuff inside the UIInputViewController every time the view loads, and this way you avoid having to use notifications. Essentially you're picking up the settings every time the keyboard view is loaded. Depending on how much customization you have, this may or may not be optimal.

它是UIInputViewController子类，在使用键盘时运行，而不仅仅是在应用程序运行时。你可能还想每次视图加载时都在UIInputViewController中加载NSUserDefaults这些东西，这样你就不用使用通知了。基本上，每次加载键盘视图时，都要进行设置。取决于您有多少定制，这可能是最优的，也可能不是最优的。

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It seems to be a bug in iOS 8.0.2 even on the device (I've tested on iPad Air). Custom keyboard setting are not saved and cannot be read from extension.

在iOS 8.0.2中，它似乎是一个bug(我在iPad Air上测试过)。不保存自定义键盘设置，无法从扩展中读取。

Solution that requires full access explained here: https://stackoverflow.com/a/26172466/840742

需要完全访问的解决方案:https://stackoverflow.com/a/26172466/840742