Two UIViewControllers inside UIScrollView - resigning first responder

Question

In the app I am working on I have two view controllers inside a scroll view. The second view controller (VC2) contains a text view. You can see the setup on the image below:

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When I scroll from VC2 to VC1, the keyboard persists and covers the content of VC1. I managed to solve the problem by making the scroll view the first responder on scrollViewDidScroll event. This works, but it results in the keyboard disappearing even on a partial scroll, which can be annoying to the users. I can solve this problem by also checking the content offset but it strikes me as overcomplicated and not elegant at all. Is there a better way to do this?

Edit:

As Chonch and latenitecoder suggested, I detected the page change. I adapted the code from: Detecting UIScrollView page change to swift. Here it is:

var previousPage = 0

func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
    let pageWidth = scrollView.frame.size.width
    let fractionalPage = scrollView.contentOffset.x / pageWidth
    let page = Int(round(fractionalPage))
    if (previousPage != page) {
        // Page has changed, do your thing!
        self.becomeFirstResponder()
        // Finally, update previous page
        previousPage = page
    }
}

Answer 1

You can set the UIScrollView's pagingEnabled property to YES and only call resignFirstResponder for the UITextView when the paging ended and the resulting page is VC1. As long as the current page remains VC2, you don't call resignFirstResponder, and the keyboard remains shown.

However, notice that it may actually be a good idea to hide the keyboard as soon as the user starts scrolling (as you're describing is your current state). Maybe you should leave it like this and when the paging ends, check if the current page is VC2, and if it is, call becomeFirstResponder on the UITextView in order to display the keyboard again.