使用xcode 8将字典保存在swift 3中的userdefaults中 [英] Save dictionary in userdefaults in swift 3 with xcode 8

问题描述

我正在使用以下代码通过xcode 8将对象保存到UserDefaults(以前是NSUserDefaults):

I am using the following code to save an object to UserDefaults (previously NSUserDefaults) using xcode 8:

let defaults = UserDefaults.standard()
defaults.set(someObject, forKey: "someObject")
print(defaults.object(forKey: "someObject"))

someObject是一本字典，我正在模拟器上运行.

someObject is a dictionary and I am running on the simulator.

由于某种原因，这不会保存该值，并且会打印'nil'.想知道这是否是模拟器问题.

For some reason this is not saving the value and 'nil' is printed. Wondering if it's a simulator problem.

推荐答案

此问题似乎是由于安装了两个版本的xcode/simulator引起的.

This problem seems to be caused by having two versions of xcode/simulator installed.

对我有用的是卸载xcode 7并仅在系统上保留xcode 8 beta.清空垃圾，重置模拟器并运行.我还重新启动了计算机.

What worked for me was uninstalling xcode 7 and just keeping xcode 8 beta on my system. Emptying trash, resetting the simulator and running. I also restarted my computer.

按照这些步骤操作后，模拟器可以保存到UserDefaults.

After following these steps the simulator is able to save to UserDefaults.

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