How to access a Dictionary passed via NSNotification, using Swift

As notification.userInfo type is AnyObject ayou must downcast it to appropriate dictionary type.

After exact type of dictionary is known you don’t need to downcast values you get from it. But you may want to check if values are actually present in dictionary before using them:

// First try to cast user info to expected type
if let info = notification.userInfo as? Dictionary<String,String> {
  // Check if value present before using it
  if let s = info["Direction"] {
    print(s)
  }
  else {
    print("no value for key\n")
  }
}
else {
  print("wrong userInfo type")
}