Could not cast value of type

Question

I am creating a Tic Tac Toe app. When the game resets, all the Xs and Os UIButton images should return to nil. Each space in the board is tagged from 0 to 8.

  var buttonsToClear : UIButton

    for var i = 0; i < 9; i++ {

        buttonsToClear = view.viewWithTag(i) as! UIButton

        buttonsToClear.setImage(nil, forState: .Normal)

    }

Everything worked fine until I added a Navigation Bar. Now I get the error message

"Could not cast value of type '_UINavigationBarBackground' (0x107e2f2a0) >to 'UIButton' (0x107e357e0). (lldb)

I am absolutely certain that my new Navigation Bar has a tag of "10".

What else could be triggering this message?

Answer 1

You should not use 0 tag, due to 0 is default and you can get any view (in this case the background of the navigation).

Tag the views starting by 1.