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.
这篇关于使用xcode 8将字典保存在swift 3中的userdefaults中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！