A protocol-based feature that displays or hides the view at the top based on scrolling

by iOS Example

ScrollTopDisplayable

A protocol-based feature that displays or hides the view at the top based on scrolling.

Preview

Usage

  1. Configure to ScrollTopDisplayable View

import ScrollTopDisplayable

class View: UIView, ScrollTopDisplayable {
    
    var configHandler: ((CGFloat) -> Void)?
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        configure()
    }
}
  1. Configure scrollView in ViewController

view.configHandler = { [weak self] viewHeight in
    self?.scrollView.contentInset.top = viewHeight
    self?.scrollView.contentOffset.y = -viewHeight
    if #available(iOS 11.1, *) {
        self?.scrollView.verticalScrollIndicatorInsets.top = viewHeight
    }
}


extension ViewController: UIScrollViewDelegate {
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        view.didScroll(scrollView)
    }
}

Installation

Cocoapods

pod 'ScrollTopDisplayable'

Swift Package Manager

  1. File > Swift Packages > Add Package Dependency
  2. Add https://github.com/SH-OH/ScrollTopDisplayable.git

OR

Update dependencies in Package.swift

dependencies: [
    .package(url: "https://github.com/SH-OH/ScrollTopDisplayable.git", .upToNextMajor(from: "1.0.1"))
]

GitHub

View Github