How to get the current container notch

[zhoujun706]

as title

[zhoujun706]

or notch index

[zhoujun706]

the delegate function just can get after notch index, i want to get the index before change

[gaetanzanella]

Please read the README https://github.com/applidium/OverlayContainer#tracking-the-overlay

func overlayContainerViewController(_ containerViewController: OverlayContainerViewController,
                                    willMoveOverlay overlayViewController: UIViewController,
                                    toNotchAt index: Int)

[zhoujun706]

this function index is toNotch , i want current notch, how can i get this like containerControlloer.currentNotchIndex

[zhoujun706]

I just use moveOverlay() function, but i want recorde the notchindex before move

[zhoujun706]

thankyou

[gaetanzanella]

You have to track the current index yourself:

var lastNotchReached = 0

func overlayContainerViewController(_ containerViewController: OverlayContainerViewController,
                                    didMoveOverlay overlayViewController: UIViewController,
                                    toNotchAt index: Int) {
    self.lastNotchReached = index
}
``

[zhoujun706]

thanks for your reply.

I will draw a picture for you tomorrow, then you will understand . Today is too late thanks again

[zhoujun706]

Hello , please see this: thank you

[gaetanzanella]

I don't understand… since your overlay moved to the top, you should have a callback. I don't see it on your image.

[zhoujun706]

For example, the KVO can get old value and new value. And now the OverlayContainerViewControllerDelegate function just can get the new value(index), I want the old value(index) .

Thank you : )

[gaetanzanella]

If you do https://github.com/applidium/OverlayContainer/issues/63#issuecomment-620578139, lastNotchReached will correspond to the previous notch index

[zhoujun706]

All right, thank you . I solve the problem as you say, but I define a property to recorde can or not update last index. Thank you