Question

我在viewDidLoad方法中设置了navigationBarItem

var button = UIBarButtonItem(title: "Menu", style: UIBarButtonItemStyle.Bordered, target: self, action: Selector("goToMenu:"))
self.navigationItem.rightBarButtonItem = button

我有一个方法是这个按钮动作的选择器

func goToMenu() {
    var destinationViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("menuBoard") as MenuViewController
    self.navigationController?.presentViewController(destinationViewController, animated: true, completion: nil)
}

但我有异常

goToMenu:]: unrecognized selector sent to instance 0x15678990'

我做错了什么？

Answer 1

将代码修改为：

func goToMenu(sender: AnyObject) {
    var destinationViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("menuBoard") as MenuViewController
    self.navigationController?.presentViewController(destinationViewController, animated: true, completion: nil)
}

原因是您的Selector("goToMenu:")查找带有一个参数的方法，但您的goToMenu实际上没有参数

barButtonItem动作异常

1 个答案: