我不能用类型字符串的参数列表调用？

Question

var query = PFQuery(className: "University")
    query.whereKey("classEnrolledName", equalTo:"fml")
    query.findObjectsInBackgroundWithBlock {
        (objects: [AnyObject]?, error: NSError?) -> Void in

        if error == nil {
            // The find succeeded.
            NSLog("Successfully retrieved \(objects!.count) scores.")

            // Do something with the found objects
            if let objects = objects {
               for object in objects {
                  NSLog("%@", object.objectId)
                  self.funlists.append(object.objectId)
               }
            }
            } else {
            // Log details of the failure
            NSLog("Error: %@ %@", error!, error!.userInfo!)
        }
    }

两行都出错了

NSLog("%@", object.objectId)

和

self.funlists.append(object.objectId)

说我不能用类型字符串的参数列表调用？！

Answer 1

objects:[AnyObject]?是可选的。你需要打开它。 More info on optionals

if let objects = objects {
    for object in objects {
        NSLog("%@", object.objectId)
            self.funlists.append(object.objectId)
    }
}