NSUserDefaults中的新键/值

Question

I have a simple question that I'm not able to find the answer to.

Can I add a new key/value to my userdefault just by

[userdefaults setBool:YES forKey:@"onSwitch"]

Or must it be in the defaults.plist first?

Answer 1

Yes you can add a new key/value to your user-defaults.

If it exists it will overwrite it, otherwise a new key/value pair will be created.

Answer 2

如果该值不存在，它将创建并设置它。

Answer 3

Yes, you can. :)

Make sure to add this code when you add any key/value in user defaults:

[[NSUserDefaults standardUserDefaults] synchronize];