Question

当我尝试在普通的ViewController中使用InputAccessoryView时，它可以很好地工作。但是当我尝试在Sub ViewController中使用它时，它就不再显示了。

以前有人在这面对吗？



class ViewController: UIViewController {
    let myViewController = MyViewController()

    override func viewDidLoad() {
        super.viewDidLoad()
        myViewController.view.frame = CGRect(x: 0.0, y: 200.0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height - 200.0)
        self.addChildViewController(self.myViewController)
        self.view.addSubview(self.myViewController.view)
        myViewController.didMove(toParentViewController: self)
    }
}

class MyViewController: UIInputViewController {
    override var canBecomeFirstResponder: Bool {
        return true
    }

    override var inputAccessoryView: UIView? {
        let view = UIView()
        view.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 50)
        view.backgroundColor = UIColor.red
        return view
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.backgroundColor = .green
    }
}

Answer 1

添加控制器作为子视图应该是这样的：

        self.addChildViewController(self.myViewController)
        self.view.addSubview(self.myViewController.view)
        self.myViewController.didMove(toParentViewController: self)

InputAccessoryView没有在SubViewController中显示

1 个答案: