Swift 2.0不允许我制作UIAlertAction

Question

这张图应该说够了：

我一直在网上寻找答案，似乎没有其他人有这个问题。我正在使用Xcode 7 Beta 3和Swift 2.我无法弄清楚出了什么问题。

提前致谢

编辑：

以下是代码：

func input(text:String) -> String {
    Say(text)
    let alert:UIAlertController = UIAlertController(title: "Goog", message: text, preferredStyle: UIAlertControllerStyle.Alert)
    [alert .addTextFieldWithConfigurationHandler({ (textfield: UITextField!) -> Void in
    })]
    var returnValue:String = ""
    let confirmAction = UIAlertAction(
        title: "OK", style: UIAlertActionStyle.Default) {(action) in
            returnValue = (alert.textFields[0] as UITextField).text!
            return
    }
    return returnValue
}

Answer 1

您希望将Swift枚举用于此类操作样式：

let alertAction2 = UIAlertAction(title: "My Alert", style: .Default)
        {(action:UIAlertAction) -> Void in
            // do something with action
            return
        }

或者更简洁：

let alertAction2 = UIAlertAction(title: "My Alert", style: .Default)
        {action in
            // do something with action
        }

Answer 2

UIAlertController *altSuccess = [UIAlertController alertControllerWithTitle:@"Success" message:@"Login Successfully" preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction *okSuccess = [UIAlertAction
                                    actionWithTitle:@"OK"
                                    style:UIAlertActionStyleDefault
                                    handler:^(UIAlertAction * action)
                                    {
                                        NSLog(@"%@",[dict objectForKey:@"email"]);
                                        NSLog(@"%@",[dict objectForKey:@"password"]);
                                        [altSuccess dismissViewControllerAnimated:YES completion:nil];
                                    }];

        [altSuccess addAction:okSuccess];

        [self presentViewController:altSuccess animated:YES completion:nil];

它的工作正常......