"the app is developed by You are launched"
- Xcode 10+
- iOS 9.0+
- Swift 4.2
Open and run the MFNavigationBarAppearing.xcodeproj in Xcode to see example
source "https://github.com/Molfar-io/MFPodSpecs.git"
pod 'MFNavigationBarAppearing'Add MFNavigationBarAppearing/Code folder into your project.
First of all you need to setup content insets of your scroll view
You need to use MFNavigationBarAppearingController instead of UINavigationContoller for presenting your UIViewController. This UIViewController should implement MFNavigationBarAppearer protocol
let navigationController = MFNavigationBarAppearingController(rootViewController: UIViewController<MFNavigationBarAppearer>())
present(navigationController, animated: true, completion: nil)Next step is implement MFNavigationBarAppearer protocol in your UIViewController:
import MFNavigationBarAppearing
//MARK: - MFNavigationBarAppearer
extension UIViewController: MFNavigationBarAppearer {
var appearingScrollView: UIScrollView? {
return scrollView
}
var navigationBarStartAppearingOffset: CGFloat {
return collectionViewContainer.frame.height - collectionViewBottomSpacing
}
var navigationBarEndAppearingOffset: CGFloat? {
return collectionViewContainer.frame.height
}
var appearingTitle: String? {
return place.title?.uppercased()
}
var appearingTitleStartOffsetAfterAppearingNavBar: CGFloat? {
return collectionViewContainer.frame.height + titleLabelTopSpacing
}
var appearingTitleEndOffsetAfterAppearingNavBar: CGFloat? {
return collectionViewContainer.frame.height + placeTitleLabel.frame.height
}
}It's UIScrollView which we will use to handle content offset for calculating appearing state of the navigation bar.
The offset from the top of the screen, when you need to start navigation bar appearing.
The offset when navigation bar appearing should end. If the value is not provided, it will be calculated depending on the height of the navigation bar.
The title that will be appearing interactively.
The offset (delay in pixels) befor starting title appearing. 0 by default.
The offset when navigation bar appearing should be finish. By default title will be appeared together with navigation bar.
If you have any questions regarding pod usage or any improvements ideas, just contact me by email mx.kuznetsov.dev@gmail.com
P.S. If you have ideas for this pod, but don't have time to implement it - write us your idea and we will do it.
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The MIT License (MIT)
Copyright © 2018 Max Kuznetsov
Permission is hereby granted, free of charge, to any person obtaining a copy
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