Retrieving bool array from NSUserdefaults in swift

Question

I have defined an array like this in my iOS app

var array=[Bool]()

and assigning some bool values to this.After that I am storing this array in my user defaults in this way.

userDefaults.setObject(dm.array, forKey: "array")

Now I want to retrievw this array. So I did like this

dm.array=userDefaults.arrayForKey("array") as! Array

But here im getting an error

Down cast from '[AnyObject]?' to 'Array' only unwraps optional; did you mean to use '!'?

Answer 1

array = userDefaults.objectForKey("array") as? [Bool] ?? [Bool]()