WatchKit NSUserDefaults和NSKeyedUnarchiver问题 [英] WatchKit NSUserDefaults and NSKeyedUnarchiver issue

问题描述

在我的项目中，我有一个名为Country的自定义对象，该对象实现了NSCoding

In my project I have a custom object called Country, which implements NSCoding

该代码通过引用在iPhone和Watch App之间共享.两个应用程序都在同一个应用程序组中.

The code is shared across iphone and watch app by reference. Both app are in the same app group.

在我的iPhone应用程序中，我正在使用NSUserDefaults讲述一个Country对象，而在watch应用程序中，我正在使用以下代码读取同一对象:

In my iPhone app I'm using NSUserDefaults to story a Country object, from watch app I'm reading the same object with following code:

var defaults = NSUserDefaults(suiteName: "group.my.group")
if let data = defaults?.objectForKey("country") as? NSData {
    if let country = NSKeyedUnarchiver.unarchiveObjectWithData(data) as? Country {
        println("done")
    }
}

iPhone应用程序中的这段代码可以完美运行，并且正确创建了国家/地区变量，在Watch应用程序中它抛出了错误:

This code in iPhone app works perfectly and the country variable is correctly created, in the Watch app it is throwing an error:

Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: '*** -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (Country)'

推荐答案

遇到了同样的问题，这对我有所帮助:

Had the same problem, this helped me: https://devforums.apple.com/message/1093079#1093079

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