如何在 Swift 中创建祝酒词？

有什么方法可以用迅捷的语言来祝酒吗？

我在目标 c 方面已经试过了，但是不能很快找到解决办法。

[self.view makeToast:@"Account created Successfully"
duration:0.5
position:@"bottom"];
131981 次浏览
小开

if makeToast:duration:position: is defined in objective-c and can be called, then the swift code will be 

self.view.makeToast("Acount created Successfully", duration: 0.5, position: "bottom")

You may need to use a bridging header to gain access to those method in your swift code though.

小开 
extension UIViewController {


func showToast(message : String, font: UIFont) {


let toastLabel = UILabel(frame: CGRect(x: self.view.frame.size.width/2 - 75, y: self.view.frame.size.height-100, width: 150, height: 35))
toastLabel.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastLabel.textColor = UIColor.white
toastLabel.font = font
toastLabel.textAlignment = .center;
toastLabel.text = message
toastLabel.alpha = 1.0
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds  =  true
self.view.addSubview(toastLabel)
UIView.animate(withDuration: 4.0, delay: 0.1, options: .curveEaseOut, animations: {
toastLabel.alpha = 0.0
}, completion: {(isCompleted) in
toastLabel.removeFromSuperview()
})
} }

Use like this:

self.showToast(message: "Your Toast Message", font: .systemFont(ofSize: 12.0))
小开

What exactly you need is https://github.com/Rannie/Toast-Swift/blob/master/SwiftToastDemo/Toast/HRToast%2BUIView.swift .

Download the HRToast + UIView.swift class and drag and drop to project. Make sure you check 'copy items if needed' on dialogue box.

  //Usage:
self.view.makeToast(message: "Simple Toast")
self.view.makeToast(message: "Simple Toast", duration: 2.0, position:HRToastPositionTop)


self.view.makeToast(message: "Simple Toast", duration: 2.0, position: HRToastPositionCenter, image: UIImage(named: "ic_120x120")!)


self.view.makeToast(message: "It is just awesome", duration: 2.0, position: HRToastPositionDefault, title: "Simple Toast")


self.view.makeToast(message: "It is just awesome", duration: 2.0, position: HRToastPositionCenter, title: "Simple Toast", image: UIImage(named: "ic_120x120")!)


self.view.makeToastActivity()
self.view.makeToastActivity(position: HRToastPositionCenter)
self.view.makeToastActivity(position: HRToastPositionDefault, message: "Loading")
self.view.makeToastActivityWithMessage(message: "Loading")
小开

Just add the method below. This will show message in different colors with animation (message appearing from left to right & disappear).

Swift 3.0 -

class Toast
{
class private func showAlert(backgroundColor:UIColor, textColor:UIColor, message:String)
{
        

let appDelegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
let label = UILabel(frame: CGRect.zero)
label.textAlignment = NSTextAlignment.center
label.text = message
label.font = UIFont(name: "", size: 15)
label.adjustsFontSizeToFitWidth = true
        

label.backgroundColor =  backgroundColor //UIColor.whiteColor()
label.textColor = textColor //TEXT COLOR
        

label.sizeToFit()
label.numberOfLines = 4
label.layer.shadowColor = UIColor.gray.cgColor
label.layer.shadowOffset = CGSize(width: 4, height: 3)
label.layer.shadowOpacity = 0.3
label.frame = CGRect(x: appDelegate.window!.frame.size.width, y: 64, width: appDelegate.window!.frame.size.width, height: 44)
        

label.alpha = 1
        

appDelegate.window!.addSubview(label)
        

var basketTopFrame: CGRect = label.frame;
basketTopFrame.origin.x = 0;
        

UIView.animate(withDuration
:2.0, delay: 0.0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.1, options: UIViewAnimationOptions.curveEaseOut, animations: { () -> Void in
label.frame = basketTopFrame
},  completion: {
(value: Bool) in
UIView.animate(withDuration:2.0, delay: 2.0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.1, options: UIViewAnimationOptions.curveEaseIn, animations: { () -> Void in
label.alpha = 0
},  completion: {
(value: Bool) in
label.removeFromSuperview()
})
})
}
    

class func showPositiveMessage(message:String)
{
showAlert(backgroundColor: UIColor.green, textColor: UIColor.white, message: message)
}
class func showNegativeMessage(message:String)
{
showAlert(backgroundColor: UIColor.red, textColor: UIColor.white, message: message)
}
}
小开

There is a 3rd party library that supports customizable toast notification with single line of code. Here is a simple example of it:

import Toast_Swift


...


// basic usage
self.view.makeToast("This is a piece of toast")


// toast with a specific duration and position
self.view.makeToast("This is a piece of toast", duration: 3.0, position: .top)

https://github.com/scalessec/Toast-Swift

(Updated for Swift 3/4+)

小开

@mr-bean code updated to latest Swift version (3.x)

    let toastLabel =
UILabel(frame:
CGRect(x: self.view.frame.size.width/2 - 150,
y: self.view.frame.size.height-100,
width: 300,
height: 35))
toastLabel.backgroundColor = UIColor.black
toastLabel.textColor = UIColor.white
toastLabel.textAlignment = NSTextAlignment.center
self.view.addSubview(toastLabel)
toastLabel.text = message
toastLabel.alpha = 1.0
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds  =  true
UIView.animate(withDuration: 4.0, animations: {
toastLabel.alpha = 0.0
})
小开

Instead of using UILabel using UITextView gets better results.

func showToast(message: String) {
let toastLabel = UITextView(frame: CGRect(x: self.view.frame.size.width/16, y: self.view.frame.size.height-150, width: self.view.frame.size.width * 7/8, height: 35))
toastLabel.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastLabel.textColor = UIColor.white
toastLabel.textAlignment = .center;
toastLabel.text = "   \(message)   "
toastLabel.alpha = 1.0
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds  =  true
toastLabel.font = UIFont(name: (toastLabel.font?.fontName)!, size: 16)
toastLabel.layoutEdgeInsets.left = 8
toastLabel.layoutEdgeInsets.right = 8
toastLabel.center.x = self.view.frame.size.width/2
self.view.addSubview(toastLabel)
UIView.animate(withDuration: 5.0, delay: 0.1, options: .curveEaseOut, animations: {
toastLabel.alpha = 0.0
}, completion: {(isCompleted) in
toastLabel.removeFromSuperview()
})
}

Space is added with message to provide good spacing at the both ends so that it looks good. Modified version of answer of Mr.Bean

小开 
static func popUp(context ctx: UIViewController, msg: String) {


let toast = UILabel(frame:
CGRect(x: 16, y: ctx.view.frame.size.height / 2,
width: ctx.view.frame.size.width - 32, height: 100))


toast.backgroundColor = UIColor.lightGray
toast.textColor = UIColor.white
toast.textAlignment = .center;
toast.numberOfLines = 3
toast.font = UIFont.systemFont(ofSize: 20)
toast.layer.cornerRadius = 12;
toast.clipsToBounds  =  true


toast.text = msg


ctx.view.addSubview(toast)


UIView.animate(withDuration: 5.0, delay: 0.2,
options: .curveEaseOut, animations: {
toast.alpha = 0.0
}, completion: {(isCompleted) in
toast.removeFromSuperview()
})
}

Then just call it from UIViewController

popUp(context: self, msg: "Your message")
小开

I know there are accepted answers but they all seem to have a big flaw - if you show several toasts in a short period of time they will show on top of each other. Here is my implementation which takes this problem into consideration:

class Toast: UILabel {


private let BOTTOM_MARGIN: CGFloat = 16
private let SIDE_MARGIN: CGFloat = 16
private let HEIGHT: CGFloat = 35
private let SHOW_TIME_SECONDS = TimeInterval(3)
private let BACKGROUND_COLOR = UIColor.darkGray.withAlphaComponent(0.7).cgColor
private let TEXT_COLOR = UIColor.white
private let ANIMATION_DURATION_SEC = 0.33


private static var queue: [ToastHolder] = []
private static var showing: Toast?


init(_ text: String) {
super.init(frame: CGRect(x: 0, y: 0, width: 0, height: 0))


self.text = text
self.textColor = TEXT_COLOR
textAlignment = .center
self.layer.backgroundColor = BACKGROUND_COLOR
self.layer.cornerRadius = 5
}


public func show(_ parent: UIViewController) {
frame = CGRect(x: SIDE_MARGIN, y: UIScreen.main.bounds.height - BOTTOM_MARGIN - HEIGHT, width: UIScreen.main.bounds.width - 2 * SIDE_MARGIN, height: HEIGHT)


if Toast.showing == nil {
Log.d("showing \(String(describing: text))")
Toast.showing = self
alpha = 0
parent.view.addSubview(self)
UIView.animate(withDuration: ANIMATION_DURATION_SEC, animations: {
self.alpha = 1
}, completion: { (completed) in
Timer.scheduledTimer(timeInterval: self.SHOW_TIME_SECONDS, target: self, selector: #selector(self.onTimeout), userInfo: nil, repeats: false)
})
} else {
Toast.queue.append(ToastHolder(self, parent))
}
}


@objc func onTimeout() {
UIView.animate(withDuration: ANIMATION_DURATION_SEC, animations: {
self.alpha = 0
}, completion: { (completed) in
Toast.showing = nil
self.removeFromSuperview()


if !Toast.queue.isEmpty {
let holder = Toast.queue.removeFirst()
holder.toast.show(holder.parent)
}
})
}


required init?(coder aDecoder: NSCoder) {
fatalError("this initializer is not supported")
}


private class ToastHolder {
let toast: Toast
let parent: UIViewController


init(_ t: Toast, _ p: UIViewController) {
toast = t
parent = p
}
}
}

Usage:

Toast("my message").show(self)

Hope it helps someone.

小开

I have been using this extension when ever i need toast-message like android.. Just copy the extension to you project and then in your UIViewController class, call the function like 

self.toastMessage("Downloading...")
// Extention is below


extension UIViewController {
func toastMessage(_ message: String){
guard let window = UIApplication.shared.keyWindow else {return}
let messageLbl = UILabel()
messageLbl.text = message
messageLbl.textAlignment = .center
messageLbl.font = UIFont.systemFont(ofSize: 12)
messageLbl.textColor = .white
messageLbl.backgroundColor = UIColor(white: 0, alpha: 0.5)


let textSize:CGSize = messageLbl.intrinsicContentSize
let labelWidth = min(textSize.width, window.frame.width - 40)


messageLbl.frame = CGRect(x: 20, y: window.frame.height - 90, width: labelWidth + 30, height: textSize.height + 20)
messageLbl.center.x = window.center.x
messageLbl.layer.cornerRadius = messageLbl.frame.height/2
messageLbl.layer.masksToBounds = true
window.addSubview(messageLbl)


DispatchQueue.main.asyncAfter(deadline: .now() + 1) {


UIView.animate(withDuration: 1, animations: {
messageLbl.alpha = 0
}) { (_) in
messageLbl.removeFromSuperview()
}
}
}}
小开

For Swift 4

My version of a Toast that uses layout constraints, with the advantage that it works for any text size, as is (based in the response of Tony Franzis):

Just call: Toast.show(message: "My message", myViewControllerName)

class Toast {
static func show(message: String, controller: UIViewController) {
let toastContainer = UIView(frame: CGRect())
toastContainer.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastContainer.alpha = 0.0
toastContainer.layer.cornerRadius = 25;
toastContainer.clipsToBounds  =  true


let toastLabel = UILabel(frame: CGRect())
toastLabel.textColor = UIColor.white
toastLabel.textAlignment = .center;
toastLabel.font.withSize(12.0)
toastLabel.text = message
toastLabel.clipsToBounds  =  true
toastLabel.numberOfLines = 0


toastContainer.addSubview(toastLabel)
controller.view.addSubview(toastContainer)


toastLabel.translatesAutoresizingMaskIntoConstraints = false
toastContainer.translatesAutoresizingMaskIntoConstraints = false


let a1 = NSLayoutConstraint(item: toastLabel, attribute: .leading, relatedBy: .equal, toItem: toastContainer, attribute: .leading, multiplier: 1, constant: 15)
let a2 = NSLayoutConstraint(item: toastLabel, attribute: .trailing, relatedBy: .equal, toItem: toastContainer, attribute: .trailing, multiplier: 1, constant: -15)
let a3 = NSLayoutConstraint(item: toastLabel, attribute: .bottom, relatedBy: .equal, toItem: toastContainer, attribute: .bottom, multiplier: 1, constant: -15)
let a4 = NSLayoutConstraint(item: toastLabel, attribute: .top, relatedBy: .equal, toItem: toastContainer, attribute: .top, multiplier: 1, constant: 15)
toastContainer.addConstraints([a1, a2, a3, a4])


let c1 = NSLayoutConstraint(item: toastContainer, attribute: .leading, relatedBy: .equal, toItem: controller.view, attribute: .leading, multiplier: 1, constant: 65)
let c2 = NSLayoutConstraint(item: toastContainer, attribute: .trailing, relatedBy: .equal, toItem: controller.view, attribute: .trailing, multiplier: 1, constant: -65)
let c3 = NSLayoutConstraint(item: toastContainer, attribute: .bottom, relatedBy: .equal, toItem: controller.view, attribute: .bottom, multiplier: 1, constant: -75)
controller.view.addConstraints([c1, c2, c3])


UIView.animate(withDuration: 0.5, delay: 0.0, options: .curveEaseIn, animations: {
toastContainer.alpha = 1.0
}, completion: { _ in
UIView.animate(withDuration: 0.5, delay: 1.5, options: .curveEaseOut, animations: {
toastContainer.alpha = 0.0
}, completion: {_ in
toastContainer.removeFromSuperview()
})
})
}
}
小开

If the need is for a simple Toast message without fancy customization of font, alignment, text color, etc. then the following would do just fine

let messageVC = UIAlertController(title: "Message Title", message: "Account Created successfully" , preferredStyle: .actionSheet)
present(messageVC, animated: true) {
Timer.scheduledTimer(withTimeInterval: 0.5, repeats: false, block: { (_) in
messageVC.dismiss(animated: true, completion: nil)})}

.actionSheet presents the alert from Bottom of the screen and the Timer takes care of the display duration. You can add this as an extension to UIViewController and then call it from anywhere.

小开

Let me add this to this chain of answers: This library does what you need DCToastView allowing you to provide toast messages from the top or bottom side of the screen:

DCToastViewSample

You will just need to add the pod

pod 'DCToastView'

Import it where you want to use it.

import DCToastView

And use it

ToastPresenter.shared.show(in: self.view, message: "This is a toast")

You can pass the following properties to the show method:

  • view: The view in which the toast is going to be presented
  • message: The message that the toast will show
  • toastPlace: The place which can be .down or .up
  • backgroundColor: The background color of the toast; defaults to black
  • textColor: The text color of the message; defaults to white
  • timeOut: The amount of seconds for the toast to dismiss if not provided it means that the toast will be sticky (will remain until touched); defaults to nil
  • roundness: How round the toast will be: .none, .low, .mid, .high; defaults to .mid
小开

This will help for you it will make the toast at the center with proper padding

func showToast(message:String,view:UIView){
let toastLabel = PaddingLabel()
toastLabel.frame = CGRect(x:0, y: view.frame.size.height-100, width: view.frame.width-50, height: 0)
toastLabel.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastLabel.textColor = UIColor.white
toastLabel.textAlignment = .center;
toastLabel.font = UIFont(name: "Montserrat-Light", size: 12.0)
toastLabel.text = message
toastLabel.alpha = 1.0
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds  =  true
toastLabel.sizeToFit()
toastLabel.frame.origin.x=(view.frame.width/2)-(toastLabel.frame.width/2)
view.addSubview(toastLabel)
UIView.animate(withDuration: 4.0, delay: 0.1, options: .curveEaseOut, animations: {
toastLabel.alpha = 0.0
}, completion: {(isCompleted) in
toastLabel.removeFromSuperview()
})
}

And add this PaddingLabel file for label padding

import Foundation
import UIKit
class PaddingLabel: UILabel {


let padding=UIEdgeInsetsMake(5, 10, 5,10)
override func drawText(in rect: CGRect) {
super.drawText(in: UIEdgeInsetsInsetRect(rect, padding))
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
let superSizeThatFits=super.sizeThatFits(size)
let width=superSizeThatFits.width+padding.left+padding.right
let height=superSizeThatFits.height+padding.top+padding.bottom
return CGSize(width: width, height: height)
}
}
小开

Swift 4.2 Very easy and super way

let toastLabel = UILabel()


toastLabel.lineBreakMode = .byWordWrapping
toastLabel.numberOfLines = 0
toastLabel.text = "Type your message you want to show in toast"
toastLabel.sizeToFit()
//MARK Resize the Label Frame
toastLabel.frame = CGRect(x: toastLabel.frame.origin.x, y: toastLabel.frame.origin.y, width: toastLabel.frame.size.width + 40, height: toastLabel.frame.size.height + 40)
self.view.addSubview(toastLabel)
小开

I have two more solutions on Swift 5:

Best solution (in my opinion)

Advantage:

  1. Works correctly when rotating the screen.
  2. Constraints are used for positioning.
  3. Works correctly with SafeArea.

Disadvantages:

  1. It is required to extend the UILabel class to add indents. One could do without this by placing the UILabel in the UIVIew.

Code:

class ToastLabel: UILabel {
var textInsets = UIEdgeInsets.zero {
didSet { invalidateIntrinsicContentSize() }
}


override func textRect(forBounds bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
let insetRect = bounds.inset(by: textInsets)
let textRect = super.textRect(forBounds: insetRect, limitedToNumberOfLines: numberOfLines)
let invertedInsets = UIEdgeInsets(top: -textInsets.top, left: -textInsets.left, bottom: -textInsets.bottom, right: -textInsets.right)


return textRect.inset(by: invertedInsets)
}


override func drawText(in rect: CGRect) {
super.drawText(in: rect.inset(by: textInsets))
}
}


extension UIViewController {
static let DELAY_SHORT = 1.5
static let DELAY_LONG = 3.0


func showToast(_ text: String, delay: TimeInterval = DELAY_LONG) {
let label = ToastLabel()
label.backgroundColor = UIColor(white: 0, alpha: 0.5)
label.textColor = .white
label.textAlignment = .center
label.font = UIFont.systemFont(ofSize: 15)
label.alpha = 0
label.text = text
label.clipsToBounds = true
label.layer.cornerRadius = 20
label.numberOfLines = 0
label.textInsets = UIEdgeInsets(top: 10, left: 15, bottom: 10, right: 15)
label.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(label)


let saveArea = view.safeAreaLayoutGuide
label.centerXAnchor.constraint(equalTo: saveArea.centerXAnchor, constant: 0).isActive = true
label.leadingAnchor.constraint(greaterThanOrEqualTo: saveArea.leadingAnchor, constant: 15).isActive = true
label.trailingAnchor.constraint(lessThanOrEqualTo: saveArea.trailingAnchor, constant: -15).isActive = true
label.bottomAnchor.constraint(equalTo: saveArea.bottomAnchor, constant: -30).isActive = true


UIView.animate(withDuration: 0.5, delay: 0, options: .curveEaseIn, animations: {
label.alpha = 1
}, completion: { _ in
UIView.animate(withDuration: 0.5, delay: delay, options: .curveEaseOut, animations: {
label.alpha = 0
}, completion: {_ in
label.removeFromSuperview()
})
})
}
}

How to use:

class MyController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()


showToast("Message")
}
}

Other solution

Advantage:

  1. In this version, I don't use a binding to UIViewController

Disadvantages:

  1. After screen rotation, the label does not move.
  2. Does not work correctly with multi-line strings.

Code:

class Helper {
static let DELAY_SHORT = 1.5
static let DELAY_LONG = 3.0


static func showToast(_ text: String, delay: TimeInterval = DELAY_LONG) {
guard let window = UIApplication.shared.keyWindow else {
return
}


let label = BaseLabel()
label.backgroundColor = UIColor(white: 0, alpha: 0.5)
label.textColor = .white
label.textAlignment = .center
label.font = UIFont.systemFont(ofSize: 15)
label.alpha = 0
label.text = text
label.numberOfLines = 0


var vertical: CGFloat = 0
var size = label.intrinsicContentSize
var width = min(size.width, window.frame.width - 60)
if width != size.width {
vertical = 10
label.textAlignment = .justified
}
label.textInsets = UIEdgeInsets(top: vertical, left: 15, bottom: vertical, right: 15)


size = label.intrinsicContentSize
width = min(size.width, window.frame.width - 60)


label.frame = CGRect(x: 20, y: window.frame.height - 90, width: width, height: size.height + 20)
label.center.x = window.center.x
label.layer.cornerRadius = min(label.frame.height/2, 25)
label.layer.masksToBounds = true
window.addSubview(label)


UIView.animate(withDuration: 0.5, delay: 0, options: .curveEaseIn, animations: {
label.alpha = 1
}, completion: { _ in
UIView.animate(withDuration: 0.5, delay: delay, options: .curveEaseOut, animations: {
label.alpha = 0
}, completion: {_ in
label.removeFromSuperview()
})
})
}
}

How to use:

Helper.showToast("Message")
小开

Mr. Beans answer works well. However, his answer uses a small width & isn't multi-line friendly. Use this instead.

func showToastFaded(message : String) {




let toastLabel = UILabel(frame: CGRect(x: self.view.frame.size.width/2 - 125, y: self.view.frame.size.height-100, width: 250, height: 35))
toastLabel.numberOfLines = 0
toastLabel.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastLabel.textColor = UIColor.white
toastLabel.textAlignment = .center;
toastLabel.text = message
toastLabel.alpha = 1.0
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds  =  true
toastLabel.sizeToFit()
toastLabel.frame = CGRect( x: toastLabel.frame.minX, y: toastLabel.frame.minY,width:   toastLabel.frame.width + 20, height: toastLabel.frame.height + 8)


self.view.addSubview(toastLabel)
UIView.animate(withDuration: 4.0, delay: 0.1, options: .curveEaseOut, animations: {
toastLabel.alpha = 0.0
}, completion: {(isCompleted) in
toastLabel.removeFromSuperview()
})
}
小开

I have modified the @samo's answer with:

  • Proper variables name's

  • Leading and Trailing constraints changed to center constraint.

Now message will adjust its width according to message and it will be centred.

extension UIViewController {
func showToast(message: String) {
let toastContainer = UIView(frame: CGRect())
toastContainer.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastContainer.alpha = 0.0
toastContainer.layer.cornerRadius = 20;
toastContainer.clipsToBounds  =  true


let toastLabel = UILabel(frame: CGRect())
toastLabel.textColor = UIColor.white
toastLabel.textAlignment = .center;
toastLabel.font.withSize(12.0)
toastLabel.text = message
toastLabel.clipsToBounds  =  true
toastLabel.numberOfLines = 0


toastContainer.addSubview(toastLabel)
self.view.addSubview(toastContainer)


toastLabel.translatesAutoresizingMaskIntoConstraints = false
toastContainer.translatesAutoresizingMaskIntoConstraints = false


let centerX = NSLayoutConstraint(item: toastLabel, attribute: .centerX, relatedBy: .equal, toItem: toastContainer, attribute: .centerXWithinMargins, multiplier: 1, constant: 0)
let lableBottom = NSLayoutConstraint(item: toastLabel, attribute: .bottom, relatedBy: .equal, toItem: toastContainer, attribute: .bottom, multiplier: 1, constant: -15)
let lableTop = NSLayoutConstraint(item: toastLabel, attribute: .top, relatedBy: .equal, toItem: toastContainer, attribute: .top, multiplier: 1, constant: 15)
toastContainer.addConstraints([centerX, lableBottom, lableTop])


let containerCenterX = NSLayoutConstraint(item: toastContainer, attribute: .centerX, relatedBy: .equal, toItem: self.view, attribute: .centerX, multiplier: 1, constant: 0)
let containerTrailing = NSLayoutConstraint(item: toastContainer, attribute: .width, relatedBy: .equal, toItem: toastLabel, attribute: .width, multiplier: 1.1, constant: 0)
let containerBottom = NSLayoutConstraint(item: toastContainer, attribute: .bottom, relatedBy: .equal, toItem: self.view, attribute: .bottom, multiplier: 1, constant: -75)
self.view.addConstraints([containerCenterX,containerTrailing, containerBottom])


UIView.animate(withDuration: 0.5, delay: 0.0, options: .curveEaseIn, animations: {
toastContainer.alpha = 1.0
}, completion: { _ in
UIView.animate(withDuration: 0.5, delay: 1.5, options: .curveEaseOut, animations: {
toastContainer.alpha = 0.0
}, completion: {_ in
toastContainer.removeFromSuperview()
})
})
}
}
小开

How about use Toaster

At a Glance

Toast(text: "Hello, world!").show()

Setting delay and duration

Toast(text: "Hello, world!", duration: Delay.long)
Toast(text: "Hello, world!", delay: Delay.short, duration: Delay.long)

Removing Toast

let toast = Toast(text: "Hello")
toast.show()
toast.cancel() // remove toast immediately

Customizing Appearance

  • backgroundColor
  • cornerRadius
  • textInsets
  • textColor
  • font
  • bottomOffsetPortrait
  • bottomOffsetLandscape
  • shadowPath
  • shadowColor
  • shadowOpacity
  • shadowOffset
  • shadowRadius
  • maxWidthRatio
  • useSafeAreaForBottomOffset
小开

Swift 5. If you want a simple toast implementation, please find the code below.

extension UIViewController{


func showToast(message : String, seconds: Double){
let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)
alert.view.backgroundColor = .black
alert.view.alpha = 0.5
alert.view.layer.cornerRadius = 15
self.present(alert, animated: true)
DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + seconds) {
alert.dismiss(animated: true)
}
}
}

Call It from UIViewController

  self.showToast(message: "Updating...", seconds: 1.0)
小开

The best and easiest way to add a toast on an iOS app is using this library called Loafjet. The library is really small(27kb), won't make much difference to your project. Try it!

小开

I changed @Samo answer. Here it is, mine, quite simple. This is also landscape and long text friendly.

Toast.show(message: "Hello Toast", on: view)

..

class Toast {
static func show(message: String, on baseView: UIView) {
let containerView = UIView()
containerView.backgroundColor = .black.withAlphaComponent(0.6)
containerView.alpha = 0
containerView.layer.cornerRadius = 25
containerView.clipsToBounds = true


let toastLabel = UILabel()
toastLabel.textColor = .white
toastLabel.textAlignment = .center
toastLabel.font.withSize(12.0)
toastLabel.text = message
toastLabel.clipsToBounds = true
toastLabel.numberOfLines = 0
        

baseView.addSubview(containerView)
containerView.translatesAutoresizingMaskIntoConstraints = false
containerView.leadingAnchor.constraint(greaterThanOrEqualTo: baseView.leadingAnchor, constant: 65).isActive = true
containerView.trailingAnchor.constraint(lessThanOrEqualTo: baseView.trailingAnchor, constant: -65).isActive = true
containerView.bottomAnchor.constraint(equalTo: baseView.safeAreaLayoutGuide.bottomAnchor, constant: -10).isActive = true
containerView.centerXAnchor.constraint(equalTo: baseView.centerXAnchor).isActive = true


containerView.addSubview(toastLabel)
toastLabel.translatesAutoresizingMaskIntoConstraints = false
toastLabel.topAnchor.constraint(equalTo: containerView.topAnchor, constant: 15).isActive = true
toastLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: 15).isActive = true
toastLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: -15).isActive = true
toastLabel.bottomAnchor.constraint(equalTo: containerView.bottomAnchor, constant: -15).isActive = true


UIView.animate(withDuration: 0.5, delay: 0, options: .curveEaseIn, animations: {
containerView.alpha = 1
}, completion: { _ in
UIView.animate(withDuration: 0.5, delay: 1.5, options: .curveEaseOut, animations: {
containerView.alpha = 0
}, completion: { _ in
containerView.removeFromSuperview()
})
})
}
}
小开 
extension UIViewController {


func showToast(message:String,color:UIColor) {
DispatchQueue.main.async {
let toastLbl = UILabel(frame: CGRect(x: 20, y: self.view.frame.size.height - 100, width: self.view.frame.width - 40 , height: 30))
toastLbl.layer.cornerRadius = 8;
toastLbl.clipsToBounds  =  true
toastLbl.textColor = .white
toastLbl.font = .systemFont(ofSize: 15)
toastLbl.textAlignment = .center;
toastLbl.text = message
self.view.addSubview(toastLbl)
toastLbl.backgroundColor = color
UIView.animate(withDuration: 2.0, delay: 0, options: .transitionCurlDown, animations: {
}, completion: {(isCompleted) in
toastLbl.removeFromSuperview()
})
}
} }

self.view.showToast(message: "Toast Shown", color: .green)
小开

This is another way to do it.

    func showToast(viewController: UIViewController?, message: String) {
let alertDisapperTimeInSeconds = 3.0
let toastLabel = UILabel(frame: CGRect(x: self.view.frame.size.width/2 - 75, y: self.view.frame.size.height-100, width: 150, height: 35))
toastLabel.backgroundColor = UIColor.black.withAlphaComponent(0.6)
toastLabel.textColor = UIColor.white
toastLabel.font = .systemFont(ofSize: 14)
toastLabel.textAlignment = .center;
toastLabel.text = message
toastLabel.alpha = 1.0
toastLabel.layer.cornerRadius = 10;
toastLabel.clipsToBounds  =  true
viewController?.view.addSubview(toastLabel)
    

DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + alertDisapperTimeInSeconds) {
toastLabel.alpha = 0.0
toastLabel.removeFromSuperview()
}
}

How to access function

self.showToast(viewController: self, message: "I am a Toast Message")

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