Store [String] in NSUserDefaults

Question

I want to save a Swift Style String Array into NSUserDefaults, but acutally the \"if\" statement in the code says that returnValue is always nil.

Later in the code (

Answer 1

As stated in the documentation:

For NSArray and NSDictionary objects, their contents must be property list objects.

This means you need to convert your String objects to NSString when saving, something like this should work:

var food : [String] {
    get {
        var returnValue : [String]? = NSUserDefaults.standardUserDefaults().objectForKey("food") as? [String]
        if returnValue == nil      //Check for first run of app
        {
            returnValue = ["muesli", "banana"]; //Default value
        }
        return returnValue!
    }
    set (newValue) {
        //  Each item in newValue is now a NSString
        let val = newValue as [NSString]
        NSUserDefaults.standardUserDefaults().setObject(val, forKey: "food")
        NSUserDefaults.standardUserDefaults().synchronize()
    }
}