当我这样做时，从编译器获取投诉
有什么想法。随意评论。欣赏它。 @H_403_3@谢谢
class ViewController: UIViewController {
var delegate : AppDelegate
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view,typically from a nib.
//self.appDelegate = UIApplication.sharedApplication().delegate;
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func getData(sender : AnyObject) {
}
@IBAction func logout(sender : AnyObject) {
}
}
@H_403_3@但是，如果我只是添加？在AppDelegate的结尾，如下所示，错误消失了。
class ViewController: UIViewController {
var delegate : AppDelegate?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view,typically from a nib.
//self.appDelegate = UIApplication.sharedApplication().delegate;
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func getData(sender : AnyObject) {
}
@IBAction func logout(sender : AnyObject) {
}
}
@H_403_3@我没有看到可选关键字与此错误相关，除非我错了。有什么想法。随意评论。欣赏它。 @H_403_3@谢谢
