Menu on navigationbar about parchment HOT 2 CLOSED

Yeah this is definitely possible!

You basically need to move the collectionView into the navigation bar by setting the titleView property on the navigationItem, like this:

navigationItem.titleView = pagingViewController.collectionView

Then you need to set the frame of the title view. For example, if you always want it to be the same size as the navigation bar:

override func viewDidLayoutSubviews() {
  guard let navigationBar = navigationController?.navigationBar else { return } 
  navigationItem.titleView?.frame = CGRect(origin: .zero, size: navigationBar.bounds.size)
}

You also need to update constraints of the PagingView, as the default implementation will setup some auto-layout constraints that will mess the collection view. Since you're putting the menu view inside the navigation bar we basically want to remove the layout constraints for the menu view and set the page view controller to extend the entire size. To do this you need to create you own PagingView subclass, and override setupConstraints:

class CustomPagingView: PagingView {
  override func setupConstraints() {
    pageView.translatesAutoresizingMaskIntoConstraints = false
    pageView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
    pageView.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true
    pageView.topAnchor.constraint(equalTo: topAnchor).isActive = true
    pageView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
  }
}

Then create your own PagingViewController subclass and set your custom view:

class CustomPagingViewController: FixedPagingViewController {
  override func loadView() {
    view = CustomPagingView(
      pageView: pageViewController.view,
      collectionView: collectionView,
      options: options)
  }
}

I've also added a new navigation bar example you can take look at for the full implementation. Hope this works for you!

from parchment.

Thanks! It's very helpful.
I've solved my problem.
Thank you again.

from parchment.