import UIKit
import JTMaterialSpinner

class ViewController: UIViewController {

    var spinnerView = JTMaterialSpinner()

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Customize the line width
        spinnerView.circleLayer.lineWidth = 2.0

        // Change the color of the line
        spinnerView.circleLayer.strokeColor = UIColor.orange.cgColor
        
        // Change the duration of the animation
        spinnerView.animationDuration = 2.5
    }

    func loadSomething () {
        spinnerView.beginRefreshing()
        MyService.loadSomeData() { () -> () in
            spinnerView.endRefreshing()
        }
    }
}