Simple top toast on swift 3

toast_swift.md

Usage

Toast.show(withMessage: "My message")

Result

toast_swift.swift

import Foundation
import UIKit

class Toast {
    static func show(withMessage message: String, withHeight height: CGFloat = 60.0, withDuration duration: TimeInterval = 3.0, withBackgroundColor backgroundColor: UIColor = UIColor.black, withTextColor textColor:  UIColor = UIColor.white) {
        
        let view = UIApplication.shared.keyWindow!
        
        let toastLabel = UILabel(frame: CGRect(x: 0.0, y: -height, width: UIScreen.main.bounds.width, height: height))
        toastLabel.backgroundColor = backgroundColor
        toastLabel.textColor = textColor
        toastLabel.textAlignment = .center;
        toastLabel.text = "\n\(message)"
        toastLabel.font = toastLabel.font.withSize(12)
        toastLabel.numberOfLines = 2
        toastLabel.alpha = 1.0
        toastLabel.clipsToBounds  =  true
        
        view.addSubview(toastLabel)
        
        UIView.animate(withDuration: 0.2, animations: {
            toastLabel.frame.origin.y = 0
            
        }) { _ in
            UIView.animate(withDuration: 0.2, delay: duration, animations: {
                toastLabel.frame.origin.y = -height
            }, completion: {(isCompleted) in
                toastLabel.removeFromSuperview()
            })
        }
    }
}