Saving custom structs/classes in UserDefaults

uchicago-mobi / MPCS51030-2017-Winter-Forum

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Saving custom structs/classes in UserDefaults #178

Open aaggarw99 opened 7 years ago

aaggarw99 commented 7 years ago

Hello,

To my understanding, saving arrays of custom structs and classes into UserDefaults is not allowed. What's the best alternative to saving an array of structs so that it is remembered every time the app is reopened?

Thanks

tabinks commented 7 years ago

Two possible solutions:

You can only save native Swift/Foundation types to UserDefaults. You could convert would have to use these in order to user UserDefaults.
Implement serialization with NSKeyedArchiver on you custom classes. It would be just as easy to save as using UserDefaults
Okay there is one more. Convert your custom data classes to NSData and then you could save them to UserDefaults. I would not recommend this.