使用 xcode 8 在 swift 3 中的用户默认值中保存字典 [英] Save dictionary in userdefaults in swift 3 with xcode 8

问题描述

我使用以下代码使用 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 是一个字典，我在模拟器上运行.

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

出于某种原因，这并没有保存值，而是打印了nil".想知道是不是模拟器问题.

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

推荐答案

这个问题好像是安装了两个版本的 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 并在我的系统上保留 xcode 8 beta.清空垃圾，重置模拟器并运行.我也重新启动了我的电脑.

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.

执行这些步骤后，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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