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import Foundation
import UIKit
class ActivityIndicatorButton: UIButton {
@IBInspectable var indicatorColor : UIColor = .gray
var buttonImage: UIImage?
func startAnimating() {
self.isEnabled = false
buttonImage = self.imageView?.image
self.setImage(nil, for: .normal)
let indicator = UIActivityIndicatorView()
indicator.color = indicatorColor
indicator.hidesWhenStopped = true
indicator.tag = 99
let buttonHeight = self.bounds.size.height
let buttonWidth = self.bounds.size.width
indicator.center = CGPoint(x: buttonWidth/2, y: buttonHeight/2)
let scale = max(min((self.frame.size.height - 4) / 21, 2.0), 0.0)
let transform: CGAffineTransform = CGAffineTransform(scaleX: scale, y: scale)
indicator.transform = transform
self.addSubview(indicator)
indicator.startAnimating()
}
func stopAnimating() {
if let image = buttonImage {
self.setImage(image, for: .normal)
}
if let indicator = self.viewWithTag(99) as? UIActivityIndicatorView {
indicator.stopAnimating()
indicator.removeFromSuperview()
}
}
}