ios - barButtonItem Action 异常

Question

我在 viewDidLoad 方法中设置 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 Action 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(exception)

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

我做错了什么？

Answer 1

修改代码为:

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

原因是你的 Selector("goToMenu:") 寻找带一个参数的方法，但你的 goToMenu 实际上没有参数