The LinearActivityIndicatorView is a Swift implementation of the indeterminate linear progress indicator of the Material Design for iOS.
Add the LinearActivityIndicatorView.swift
file to your Xcode project.
let activityIndicatorView = LinearActivityIndicatorView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: 5))
view.addSubview(activityIndicatorView)
activityIndicatorView.autoresizingMask = [.flexibleWidth, .flexibleTopMargin]
// Show activity indicator
activityIndicatorView.startAnimating()
// Hide activity indicator
activityIndicator.stopAnimating()