Downcast anyObject to String in Swift

Question

I'm working with Xcode6-Beta6 and want to display an item from an NSArray on the screen.

extract from code is as follows

    var task: AnyObject?  = categoriesForOption.valueForKey("task")!
    var taskName: UILabel = view.viewWithTag(10) as UILabel
    taskName.text         = task as? String

task contains ( Tea ) taskName contains nil

I've searched for solutions and found many answers, but none of them seem to work. The extract above is the nearest I've come to solving my problem. Hope someone can help me as I'm banging my head against the wall.

Answer 1

You could try:

var task: String!  = String(categoriesForOption.valueForKey("task"))
taskName.text = task

Answer 2

I guess you meant NSDictionary and not NSArray .

I think this way it's more explicit:

var task = categoriesForOption.valueForKey("task") as? String

Type inferral will make task a String? - it will be populated with a value if the value corresponding to the "task" key exists in the dictionary and if it's a string. It's nil otherwise.