How to save an array of custom structs to plist swift

Question

I\'m trying to save alert data to a plist, it is in the form of an array of the class alertData, all the info i can find points to encoding it, and then putting it in the ar

Answer 1

You're not meant to call encodeWithCoder() yourself. Use NSKeyedArchiver and NSKeyedUnarchiver. The init(coder:) and encodeWithCoder() will be called as needed by the archiver / unarchiver.

Place your NSCoding-compliant alertData instances (this should really be AlertData since class names should be proper case) into an array (or dictionary if you please) and do this:

let archive = NSKeyedArchiver.archivedDataWithRootObject(yourArrayOfAlertData)

In this case, archive will be an NSData instance.

Update

Actually, I guess I missed it the first time, but your encode...() method isn't right. At all. Consider the difference with:

public func encodeWithCoder(aCoder: NSCoder) {
    aCoder.encodeDouble(alertCounter, forKey:"Item1")
    aCoder.encodeObject(alertText, forKey:"Item2")
    aCoder.encodeObject(alertColor , forKey:"Item3")
    aCoder.encodeInteger(alertColorIndex, forKey:"Item4")
}

(Also consider naming your keys the same as their properties, like "alertCounter" for alertCounter.)