This is how I have done in Swift 3.0. I created UIView extension and calling the self.view.showToast(message: "Message Here", duration: 3.0) and self.view.hideToast()
extension UIView{
var showToastTag :Int {return 999}
//Generic Show toast
func showToast(message : String, duration:TimeInterval) {
let toastLabel = UILabel(frame: CGRect(x:0, y:0, width: (self.frame.size.width)-60, height:64))
toastLabel.backgroundColor = UIColor.gray
toastLabel.textColor = UIColor.black
toastLabel.numberOfLines = 0
toastLabel.layer.borderColor = UIColor.lightGray.cgColor
toastLabel.layer.borderWidth = 1.0
toastLabel.textAlignment = .center;
toastLabel.font = UIFont(name: "HelveticaNeue", size: 17.0)
toastLabel.text = message
toastLabel.center = self.center
toastLabel.isEnabled = true
toastLabel.alpha = 0.99
toastLabel.tag = showToastTag
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds = true
self.addSubview(toastLabel)
UIView.animate(withDuration: duration, delay: 0.1, options: .curveEaseOut, animations: {
toastLabel.alpha = 0.95
}, completion: {(isCompleted) in
toastLabel.removeFromSuperview()
})
}
//Generic Hide toast
func hideToast(){
if let view = self.viewWithTag(self.showToastTag){
view.removeFromSuperview()
}
}
}