问题
In my App i am using NSUserDefaults to save some data. I have a doubt regarding this when i update the app in App Store, Will The Data in NSUserDefaults will remain same or it is removed.
回答1:
No, it will not be erased on updating
回答2:
NSUserDefaults will not be erased during update, but it will be removed when you uninstall an app.
来源：https://stackoverflow.com/questions/8208485/does-nsuserdefaults-get-erased-when-an-app-gets-updated