苹果是否将NSUserDefaults共享从iOS应用更改为watchOS应用

问题描述

我想问一下如何在watchOS应用程序上使用NSUserDefaults.它的数据与iOS应用程序NSUserDefaults的数据不同吗?

I want to ask about how to use NSUserDefaults on the watchOS app.Is its data different from the iOS app's NSUserDefaults's data?

那里 都是 of 个stackoverflow问题，所有问题都有相同的答案.就是这样，例如

There are a lot of stackoverflow questions about this topic and all of them have same answers. That said, for example

但是，所有引用的文本从所引用的网页，请参见此已接受的答案

However, all the quoted text disappeared from the web page referred, see this accepted answer.

相反，在当前的 Apple Docs .有

我有2个问题:

• 其中一个是正确的:我上面提到的所有StackOverflow问题的答案，或者Apple Docs

• Which one is correct: all of StackOverflow questions' answers I mentioned above, or, the Apple Docs

iOS使用哪种机制将NSUserDefaults对象转发到watchOS应用?依靠它进行未来开发是否可靠?数据的最新程度如何?可以在不久的将来不推荐使用此功能吗?

Which mechanism iOS use to forward NSUserDefaults object to watchOS app? Is it reliable to be relied on for future development and how recent the data is up to date? Can this feature be deprecated in the near future?

非常感谢

推荐答案

要回答第一个问题，您从StackOverflow和Apple引用的答案都是正确的. Apple将iOS应用程序的NSUserDefaults转发为只读值，但手表具有自己的NSUserDefaults作为其首选项.该文档的主要内容是使监视应用程序脱离使用NSUserDefaults的共享容器组(因为这是实现WatchKit应用程序的方式). Apple在watchOS中添加了WatchConnectivity，这是在iOS和Watch应用之间共享数据的标准.

To answer your first question, both answers you quoted from StackOverflow and Apple are correct. Apple forwards the iOS app's NSUserDefaults as read-only values, but the watch has it's own NSUserDefaults for its preferences. The main takeaway from the documentation is for watch apps to move away from shared container groups that use NSUserDefaults, (as this was how WatchKit apps were implemented). In watchOS, Apple has added WatchConnectivity which is the standard for sharing data between the iOS and watch apps.

要回答第二个问题，请像往常一样依靠NSUserDefaults分别存储与每个应用程序相关的首选项，并使用WatchConnectivity在应用程序之间共享数据.

To answer your second question, rely on NSUserDefaults as you would normally to store preferences related to each app separately and use WatchConnectivity for sharing data between apps.

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