SWRevealViewController滑动/点击手势无法正常工作

Question

I've implemented SWRevealViewController according to the tutorials I've seen for a hamburger slide menu. Things are working great, except if I use the slide menu on a later page in the app, and then collapse it, and then go to an earlier page and try to use it, it will open, but no gestures will collapse it unless I navigate back to the page that last opened the menu. Then I can close it from there.

The code I'm using in the viewDidLoad of each ViewController is

let menuButton = self.navigationItem.rightBarButtonItem
    if self.revealViewController() != nil {
        menuButton?.target = self.revealViewController()
        menuButton?.action = "revealToggle:"
        self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
        self.view.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())

    }

Any ideas what's causing this/how to fix it?

Answer 1

Remove the code from ViewDidLoad and use it in ViewDidAppear .

ViewDidLoad runs only once, when UIViewController class is loading.

ViewDidAppear runs every time the UIViewController appears on screen.