CODEWITHSUNDEEP
c#xamarinxamarin.formstoast
Jimmy
Jimmy

Reputation: 1349

Toast equivalent for Xamarin Forms

Is there any way using Xamarin Forms (not Android or iOS specific) to have a pop-up, like Android does with Toast, that needs no user interaction and goes away after a (short) period of time?

From searching around all I'm seeing are alerts that need user clicks to go away.

Upvotes: 119

Views: 88078

Answers (21)

neverdayxy
neverdayxy

Reputation: 49

You could use the Xamarin.Toolkit and follow this information provided by MS. https://learn.microsoft.com/en-us/xamarin/community-toolkit/views/popup

In my application I could manage it by putting every code-thing between a viewmodel, the view and a method called DismissThisPopup(). So it is possible to controll it from outside of the current Mainpage.

To acomplish your request. You could call await Task.Delay(5000); //as example 5sec after you called your popup.Open(); so it might look like:

    ...
var vm = new MyPopUpViewModel()
vm.DisplayText = "this could be your text";
vm.DelayTimeForDismiss = 5000;
vm.IsLightDismissAllowed = false; //used that you can not close the popup by clicking around
await vm.OpenPopupAsync();

then in your vm OpenPopUpAsync()

...other properties and stuff
internal PopUpLoadingView popup = new PopUpLoadingView();//this is the view created with the informations from MS

public async Task OpenPopUp()
{
 popup.BindingContext = this;            
 Application.Current.MainPage.Navigation.ShowPopup(popup: popup);
 await Task.Delay(DelayTimeForDismiss);
 popup.DismissThisPopup();
}

and in your PopUpLoadingView, insert this method:

...other stuff
        public void DismissThisPopup()
        {
            Dismiss(this);
        }

Upvotes: 0

Cfun
Cfun

Reputation: 9721

You can use SnackBar from Xamarin Community toolkit package, which uses native implementation in platforms where natively supported, because Toast is deprecated in API level 30, a SnackBar without an Action is equivalent to a Toast.

This method was deprecated in API level 30. Custom toast views are deprecated. Apps can create a standard text toast with the makeText(android.content.Context, java.lang.CharSequence, int) method, or use a Snackbar when in the foreground. Starting from Android Build.VERSION_CODES#R, apps targeting API level Build.VERSION_CODES#R or higher that are in the background will not have custom toast views displayed. (source).

Starting with Xamarin Community toolkit

  1. Install the Package on all your projects
  2. include the namespace using Xamarin.CommunityToolkit.Extensions;
  3. In your page code-behind show a SnackBar upon an event
await this.DisplayToastAsync("This is a Toast Message");
await this.DisplayToastAsync("This is a Toast Message for 5 seconds", 5000);

You may specify a duration for the SnackBar to disappear (in milliseconds) or leave the default one which equals 3 seconds.

enter image description here

Resources

SnackBar Sample

Official Repo https://github.com/xamarin/XamarinCommunityToolkit

Official Docs https://learn.microsoft.com/en-us/xamarin/community-toolkit/

EDIT

  1. Anchored Toast: You may anchor the toast above a view (like screenshot above) by simply calling the extension method DisplayToastAsync() from that view (anchor) object instead from the page instance (this):
<Button x:name="floatingButton" .../>

await floatingButton.DisplayToastAsync("This is a Toast Message for 5 seconds", 5000);
  1. Padding and corner radius: (starting from xct version 1.3.0 preview-1)

You can set the corner radius and the padding for your Toast like the following example:

var messageOptions = new MessageOptions
{
    Message = "Toast with Padding and round corner",
    Foreground = Color.White,
    Font = Font.SystemFontOfSize(16),
    Padding = new Thickness(20)
};

var options = new ToastOptions
    {
        MessageOptions = messageOptions,
        CornerRadius = new Thickness(40, 40, 0, 0),
        BackgroundColor = Color.FromHex("#CC0000")
    };

await this.DisplayToastAsync(options);

enter image description here

enter image description here

PS: The same properties could be applied for the SnackBar view.

EDIT2

If what xct SnackBar offers doesn't fulfil your requirements or you want to display not only text but some complexe view, you might have to use a popup instead.

Upvotes: 17

Alex Chengalan
Alex Chengalan

Reputation: 8281

There is a simple solution for this. By using the DependencyService you can easily get the Toast-Like approach in both Android and iOS.

Create an interface in your common package.

public interface IMessage
{
    void LongAlert(string message);
    void ShortAlert(string message);
}

Android section

[assembly: Xamarin.Forms.Dependency(typeof(MessageAndroid))]
namespace Your.Namespace
{
    public class MessageAndroid : IMessage
    {
        public void LongAlert(string message)
        {
            Toast.MakeText(Application.Context, message, ToastLength.Long).Show();
        }
    
        public void ShortAlert(string message)
        {
            Toast.MakeText(Application.Context, message, ToastLength.Short).Show();
        }
    }
}

iOS section

In iOs there is no native solution like Toast, so we need to implement our own approach.

[assembly: Xamarin.Forms.Dependency(typeof(MessageIOS))]
namespace Your.Namespace
{
    public class MessageIOS : IMessage
    {
        const double LONG_DELAY = 3.5;
        const double SHORT_DELAY = 2.0;

        NSTimer alertDelay;
        UIAlertController alert;

        public void LongAlert(string message)
        {
            ShowAlert(message, LONG_DELAY);
        }
        public void ShortAlert(string message)
        {
            ShowAlert(message, SHORT_DELAY);
        }

        void ShowAlert(string message, double seconds)
        {
            alertDelay = NSTimer.CreateScheduledTimer(seconds, (obj) =>
            {
                dismissMessage();
            });
            alert = UIAlertController.Create(null, message, UIAlertControllerStyle.Alert);
            UIApplication.SharedApplication.KeyWindow.RootViewController.PresentViewController(alert, true, null);
        }

        void dismissMessage()
        {
            if (alert != null)
            {
                alert.DismissViewController(true, null);
            }
            if (alertDelay != null)
            {
                alertDelay.Dispose();
            }
        }
    }
}

Please note that in each platform, we have to register our classes with DependencyService.

Now you can access out Toast service in anywhere in our project.

DependencyService.Get<IMessage>().ShortAlert(string message); 
DependencyService.Get<IMessage>().LongAlert(string message);

Upvotes: 234

Piova
Piova

Reputation: 26

I used https://github.com/ishrakland/Toast/ In https://www.nuget.org/packages/Plugin.Toast/

Example:

CrossToastPopUp.Current.ShowToastMessage ("Loading", Plugin.Toast.Abstractions.ToastLength.Short);

Give it a try.

Upvotes: 1

Nabil Akhlaque
Nabil Akhlaque

Reputation: 356

Install nuget Acr.UserDialogs. It contains Toasts exactly what you are looking for.

ToastEvent toastEvent = new ToastEvent();
var toastConfig = new ToastConfig(toastEvent,"Toasting...","");
toastConfig.SetDuration(2000);

UserDialogs.Instance.Toast(toastConfig);

Upvotes: 0

KiShOrE
KiShOrE

Reputation: 925

You can use Acr.UserDialogs Package from nuget and code like below,

Acr.UserDialogs.UserDialogs.Instance.Toast(Message, new TimeSpan(3));

Upvotes: 23

Allister
Allister

Reputation: 329

We'd normally use Egors Toasts plugin, but as it requires permissions on iOS for a current project we've gone a different route using Rg.Plugins.Popup nuget (https://github.com/rotorgames/Rg.Plugins.Popup).

I wrote a basic xaml/cs page of type PopupPage,

<?xml version="1.0" encoding="utf-8" ?>
<popup:PopupPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         xmlns:popup="clr-namespace:Rg.Plugins.Popup.Pages;assembly=Rg.Plugins.Popup"
         x:Class="YourApp.Controls.ToastPage">
...

and had it created by a service, whose interface you registered at app start or use Xamarin.Forms.DependencyService to fetch the service would be viable too.

The service news up the PopupPage derived page, and does

await PopupNavigation.PushAsync(newToastPage);
await Task.Delay(2000);
await PopupNavigation.PopAllAsync();

The Popup page can be dismissed by the user by tapping outside the page display (assuming it hasn't filled the screen).

This seems to work fine on iOS/Droid, but I'm open to correction if anyone knows what this is a risky way of doing it.

Upvotes: 9

Nguyen Minh Hien
Nguyen Minh Hien

Reputation: 483

Adding Alex's code, for UWP variant, I found a great implementation here https://www.c-sharpcorner.com/article/xamarin/

Just come and leave a clap for him :)

[assembly:Xamarin.Forms.Dependency(typeof(Toast_UWP))]  
namespace ToastMessage.UWP  
{  
    class Toast_UWP : Toast  
    {  
        public void Show(string message)  
        {  
            ToastTemplateType toastTemplate = ToastTemplateType.ToastImageAndText01;  
            XmlDocument toastXml = ToastNotificationManager.GetTemplateContent(toastTemplate);  
  
            XmlNodeList toastTextElements = toastXml.GetElementsByTagName("text");  
            toastTextElements[0].AppendChild(toastXml.CreateTextNode(message));  
              
            XmlNodeList toastImageAttributes = toastXml.GetElementsByTagName("image");  
            ((XmlElement)toastImageAttributes[0]).SetAttribute("src", "ms-appx:///Assets/Logo.scale-240.png");  
            ((XmlElement)toastImageAttributes[0]).SetAttribute("alt", "logo");  
  
            IXmlNode toastNode = toastXml.SelectSingleNode("/toast");  
            ((XmlElement)toastNode).SetAttribute("duration", "short");  
  
            var toastNavigationUriString = "#/MainPage.xaml?param1=12345";  
            var toastElement = ((XmlElement)toastXml.SelectSingleNode("/toast"));  
            toastElement.SetAttribute("launch", toastNavigationUriString);  
  
            ToastNotification toast = new ToastNotification(toastXml);  
  
            ToastNotificationManager.CreateToastNotifier().Show(toast);  
        }  
    }  
}

By default, your messages will be queued and notified one after one, delayed based on the message duration. If you want to replace the existing message by the new one immediately just add more code like below

ToastNotificationManager.History.Remove("YOUR_TAG");

// Code to create Toast message, like the above method

toast.Tag = "YOUR_TAG";

If you want to add audio to your toast message, add this to your code

var audio = toastXml.CreateElement("audio");
audio.SetAttribute("src", "ms-winsoundevent:Notification.Default");

Upvotes: 0

Jos&#233; Donizete Oliveira Junior
Jos&#233; Donizete Oliveira Junior

Reputation: 39

Currently use xamarin essential in android:

//access mainthread
MainThread.BeginInvokeOnMainThread(() =>
{
     Toast.MakeText(Application.Context, message, ToastLength.Short).Show();       
});

Upvotes: 0

Gunnar
Gunnar

Reputation: 78

@MengTim, to fix the multiple toast issue in @alex-chengalan's solution, I simply wrapped everything within ShowAlert() with a check to see if alert and alertDelay are null, then within DismissMessage, nulled out alert and alertDelay.

void ShowAlert(string message, double seconds)
    {
        if(alert == null && alertDelay == null) {
            alertDelay = NSTimer.CreateScheduledTimer(seconds, (obj) =>
            {
                DismissMessage();
            });
            alert = UIAlertController.Create(null, message, UIAlertControllerStyle.Alert);
            UIApplication.SharedApplication.KeyWindow.RootViewController.PresentViewController(alert, true, null);
        }
    }

    void DismissMessage()
    {
        if (alert != null)
        {
            alert.DismissViewController(true, null);
            alert = null;
        }
        if (alertDelay != null)
        {
            alertDelay.Dispose();
            alertDelay = null;
        }
    }

That seemed to at least clear up the UI hang, if you are looking for a quick fix. I was trying to display the toast on navigation to a new page, and believe that the PresentViewController being set was essentially cancelling out my navigation. Sorry I did not comment within the thread, my reputation is too low :(

Upvotes: 4

Patricia Lopes
Patricia Lopes

Reputation: 21

I customised a custom popup with Rg.Plugins.Popup NuGet this is an example:

 <pages:PopupPage.Animation>
    <animations:ScaleAnimation 
        PositionIn="Center"
        PositionOut="Center"
        ScaleIn="1.2"
        ScaleOut="0.8"
        DurationIn="600"
        DurationOut="600"
        EasingIn="Linear"
       EasingOut="Linear"/>
</pages:PopupPage.Animation>

<Frame CornerRadius="10"  
    HeightRequest="30"
       VerticalOptions="End"
       HorizontalOptions="Fill"
       HasShadow="False"
        Padding="0" Margin="40,50"
       OutlineColor="LightGray">
    <StackLayout 
    Opacity="0.4"
       BackgroundColor="White">
    <Label
        x:Name="lbl"
        LineBreakMode="WordWrap"
        HorizontalTextAlignment="Center"
                    VerticalTextAlignment="Center"

        VerticalOptions="CenterAndExpand"
        HorizontalOptions="Center" TextColor="Black" FontSize="12">
                <Label.FontFamily>
                    <OnPlatform x:TypeArguments="x:String">
                        <On Platform="iOS" Value="NewJuneMedium" />
                    </OnPlatform>
                </Label.FontFamily>
            </Label>
</StackLayout>
    </Frame>

then in your basecontentpage you can add the following code, to show and hide the "toast" after a while:

public async void showpopup(string msg)
    {
        await Navigation.PushPopupAsync(new Toast(msg));
        await Task.Delay(3000);
        await Navigation.PopPopupAsync(true);   
    }

Upvotes: 1

Kemal Kaya
Kemal Kaya

Reputation: 322

I would recommend Plugin.Toast library from nuget. It works well.

CrossToastPopUp.Current.ShowToastMessage("my toast message");

or from ACR.UserDialogs Nuget libriary 

UserDialogs.Instance.ShowLoading("Loading");

Upvotes: 4

G&#225;bor
G&#225;bor

Reputation: 10274

Adding to Alex's answer, here's the UWP variant:

public class Message : IMessage {
  private const double LONG_DELAY = 3.5;
  private const double SHORT_DELAY = 2.0;

  public void LongAlert(string message) =>
    ShowMessage(message, LONG_DELAY);

  public void ShortAlert(string message) =>
    ShowMessage(message, SHORT_DELAY);

  private void ShowMessage(string message, double duration) {
    var label = new TextBlock {
      Text = message,
      Foreground = new SolidColorBrush(Windows.UI.Colors.White),
      HorizontalAlignment = HorizontalAlignment.Center,
      VerticalAlignment = VerticalAlignment.Center,
    };
    var style = new Style { TargetType = typeof(FlyoutPresenter) };
    style.Setters.Add(new Setter(Control.BackgroundProperty, new SolidColorBrush(Windows.UI.Colors.Black)));
    style.Setters.Add(new Setter(FrameworkElement.MaxHeightProperty, 1));
    var flyout = new Flyout {
      Content = label,
      Placement = FlyoutPlacementMode.Full,
      FlyoutPresenterStyle = style,
    };

    flyout.ShowAt(Window.Current.Content as FrameworkElement);

    var timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(duration) };
    timer.Tick += (sender, e) => {
      timer.Stop();
      flyout.Hide();
    };
    timer.Start();
  }
}

Coloring and styling is up to you, the MaxHeightis actually required to keep the height at the minimum.

Upvotes: 11

mohammad kamali
mohammad kamali

Reputation: 409

You can use IUserDialog NuGet and simply use it's toastAlert

var toastConfig = new ToastConfig("Toasting...");
toastConfig.SetDuration(3000);
toastConfig.SetBackgroundColor(System.Drawing.Color.FromArgb(12, 131, 193));

UserDialogs.Instance.Toast(toastConfig);

Upvotes: 6

omid-ahmadpour
omid-ahmadpour

Reputation: 63

You can use DisplayAlert("", "", "", "" );

Upvotes: -6

Fabien Richard
Fabien Richard

Reputation: 1

For UWP

public void ShowMessageFast(string message)
    {
        ToastNotifier ToastNotifier = ToastNotificationManager.CreateToastNotifier();
        Windows.Data.Xml.Dom.XmlDocument toastXml = ToastNotificationManager.GetTemplateContent(ToastTemplateType.ToastText02);
        Windows.Data.Xml.Dom.XmlNodeList toastNodeList = toastXml.GetElementsByTagName("text");
        toastNodeList.Item(0).AppendChild(toastXml.CreateTextNode("Test"));
        toastNodeList.Item(1).AppendChild(toastXml.CreateTextNode(message));
        Windows.Data.Xml.Dom.IXmlNode toastNode = toastXml.SelectSingleNode("/toast");
        Windows.Data.Xml.Dom.XmlElement audio = toastXml.CreateElement("audio");
        audio.SetAttribute("src", "ms-winsoundevent:Notification.SMS");

        ToastNotification toast = new ToastNotification(toastXml);
        toast.ExpirationTime = DateTime.Now.AddSeconds(4);
        ToastNotifier.Show(toast);
    }

Upvotes: 0

bobwki
bobwki

Reputation: 954

The iOS answers above worked for me but for one little problem -- a warning: Attempt to present UIAlertController ... whose view is not in the window hierarchy!

After some search, I came across this unrelated answer which helped. The poster commented "This looks stupid but works", which is right on both counts.

So, I modified the ShowAlert() function above with these lines, which seem to work:

    var rootVC = UIApplication.SharedApplication.KeyWindow.RootViewController;
    while ( rootVC.PresentedViewController != null) {
        rootVC = rootVC.PresentedViewController;
    }
    rootVC.PresentViewController( alert, true, null);

Upvotes: 0

Pierre-Alexandre Fl&#232;che
Pierre-Alexandre Fl&#232;che

Reputation: 76

This is my improved ShowAlert version of Ian Warburton's version to ensure that the toast is displayed even on popup page. Furthermore, the toast is dissmissed if the user click outside the toast. I used UIAlertControllerStyle.ActionSheet that look likes toast but it also work with UIAlertControllerStyle.Alert

    void ShowAlert(string message, double seconds)
    {
        var alert = UIAlertController.Create(null, message, UIAlertControllerStyle.ActionSheet);

        var alertDelay = NSTimer.CreateScheduledTimer(seconds, obj =>
        {
            DismissMessage(alert, obj);
        });

        var viewController = UIApplication.SharedApplication.KeyWindow.RootViewController;
        while (viewController.PresentedViewController != null)
        {
            viewController = viewController.PresentedViewController;
        }
        viewController.PresentViewController(alert, true, () =>
        {
            UITapGestureRecognizer tapGesture = new UITapGestureRecognizer(_ => DismissMessage(alert, null));
            alert.View.Superview?.Subviews[0].AddGestureRecognizer(tapGesture);
        });
    }

I hope this will help someone !

Upvotes: 3

Jason
Jason

Reputation: 89214

There is no built-in mechanism in Forms, but this nuget package supplies something similar

https://github.com/EgorBo/Toasts.Forms.Plugin

Note: These are not Android style toasts as requested in the question but UWP style toasts which are system wide notifications.

Upvotes: 1

Ian Warburton
Ian Warburton

Reputation: 15726

Here's a version of Alex Chengalan's iOS code that avoids the UI sticking when multiple messages are shown...

public class MessageIOS : IMessage
    {
        const double LONG_DELAY = 3.5;
        const double SHORT_DELAY = 0.75;

        public void LongAlert(string message)
        {
            ShowAlert(message, LONG_DELAY);
        }

        public void ShortAlert(string message)
        {
            ShowAlert(message, SHORT_DELAY);
        }

        void ShowAlert(string message, double seconds)
        {
            var alert = UIAlertController.Create(null, message, UIAlertControllerStyle.Alert);

            var alertDelay = NSTimer.CreateScheduledTimer(seconds, obj =>
            {
                DismissMessage(alert, obj);
            });

            UIApplication.SharedApplication.KeyWindow.RootViewController.PresentViewController(alert, true, null);
        }

        void DismissMessage(UIAlertController alert, NSTimer alertDelay)
        {
            if (alert != null)
            {
                alert.DismissViewController(true, null);
            }

            if (alertDelay != null)
            {
                alertDelay.Dispose();
            }
        }
    }

Upvotes: 19

Durai Amuthan.H
Durai Amuthan.H

Reputation: 32320

Here is a code snippet that I am using to show the toast in Xamarin.iOS

  public void ShowToast(String message, UIView view)
    {
        UIView residualView = view.ViewWithTag(1989);
        if (residualView != null)
            residualView.RemoveFromSuperview();

        var viewBack = new UIView(new CoreGraphics.CGRect(83, 0, 300, 100));
        viewBack.BackgroundColor = UIColor.Black;
        viewBack.Tag = 1989;
        UILabel lblMsg = new UILabel(new CoreGraphics.CGRect(0, 20, 300, 60));
        lblMsg.Lines = 2;
        lblMsg.Text = message;
        lblMsg.TextColor = UIColor.White;
        lblMsg.TextAlignment = UITextAlignment.Center;
        viewBack.Center = view.Center;
        viewBack.AddSubview(lblMsg);
        view.AddSubview(viewBack);
        roundtheCorner(viewBack);
        UIView.BeginAnimations("Toast");
        UIView.SetAnimationDuration(3.0f);
        viewBack.Alpha = 0.0f;
        UIView.CommitAnimations();
    }

Upvotes: 4

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