how to send array of objects using NSNotification -> userInfo in Swift

Question

userInfo only sends data of type anyObject , so I need to cast my array of Meals to anyObject without crashing and then recasting it to [Meal], unfortunately it crashes here ...

var anyOrder =  NSMutableArray()
    for meal in ordered { // ordered is array of meals [Meal] ...
        anyOrder.addObject(meal as! AnyObject) //crashes here 
    }

I want to be able to cast it or find any other way to send it using userInfo in NSNotification, thanks in advance

Why you need to case Meal to AnyObject ? Can't you just send that meal array without that case ? — Midhun MP, Sep 02 '15 at 13:31
NSMutableArrays can only hold objects. A struct is not an object. — picciano, Sep 02 '15 at 13:44

score 2 · Accepted Answer · answered Sep 02 '15 at 13:45

I'd like to know the type of Meal.

If Meal inherit AnyObject, you can cast that easily.

class Meal: AnyObject {
    // something
}

var ordered = [Meal(), Meal()]

var anyOrder =  NSMutableArray()
for meal in ordered {
    anyOrder.addObject(meal as AnyObject)
}

If not so, whether or not Meal can cast AnyObject depends on inheritors. Considering from crash, you failed to cast it. So the runtime error happen.

how to send array of objects using NSNotification -> userInfo in Swift

1 Answers1