Does MAUI support push notification

Question

Does MAUI preview 6 have option to support or handle push notifications using FCM.

Answer 1

I originally wrote this in a comment, adding it here for visibility, hopefully it helps more people.

I got it to work on Android, here is what i'm using and what i did

1. Visual Studio 2022 17.3.2 (NOT PREVIEW), (NOTICE: 17.3.3 just got released few hours ago, and i'm not upgrading yet).
2. In your project, install the following Nuget Packages:
3. Xamarin.Firebase.Messaging v123.0.7 (Latest at the time of writing)
4. Plugin.FirebasePushNotification v3.4.25 (Latest at the time of writing)
5. RESTART VISUAL STUDIO
6. Add your google-service.json to Project Folder/Platforms/Android
7. Right click the file, click properties.
8. In Build Actions, select GoogleServiceJson

NOTICE: If you don't see Google ServicesJson, Restart Visual Studio.

In App.xaml.cs add the following in the constructor.

CrossFirebasePushNotification.Current.OnTokenRefresh += (s, p) =>  
         {  
             // PLACE BREAK POINT HERE TO CAPTURE TOKEN IN DEBUG  
             System.Diagnostics.Debug.WriteLine($"TOKEN : {p.Token}");  
         };  
         // Push message received event  
         CrossFirebasePushNotification.Current.OnNotificationReceived += (s, p) =>  
         {  
      
             System.Diagnostics.Debug.WriteLine("Received");  
      
         };  
         //Push message received event  
         CrossFirebasePushNotification.Current.OnNotificationOpened += (s, p) =>  
         {  
             System.Diagnostics.Debug.WriteLine("Opened");  
             foreach (var data in p.Data)  
             {  
                 System.Diagnostics.Debug.WriteLine($"{data.Key} : {data.Value}");  
             }  
      
         };  

In ProjectRoot/Platforms/Android/MainActivity.cs add the following

protected override void OnCreate(Bundle savedInstanceState)  
         {  
             base.OnCreate(savedInstanceState);  
             FirebasePushNotificationManager.ProcessIntent(this, Intent);  
          
         }  

In ProjectRoot/Platforms/Android/MainApplication.cs add the following

 public override void OnCreate()  
     {  
         base.OnCreate();  
      
         //Set the default notification channel for your app when running Android Oreo  
         if (Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O)  
         {  
             //Change for your default notification channel id here  
             FirebasePushNotificationManager.DefaultNotificationChannelId = "FirebasePushNotificationChannel";  
      
             //Change for your default notification channel name here  
             FirebasePushNotificationManager.DefaultNotificationChannelName = "General";  
         }  
      
         //If debug you should reset the token each time.  
 #if DEBUG  
         FirebasePushNotificationManager.Initialize(this, true);  
 #else  
               FirebasePushNotificationManager.Initialize(this,false);  
 #endif  
      
         //Handle notification when app is closed here  
         CrossFirebasePushNotification.Current.OnNotificationReceived += (s, p) =>  
         {  
         };  
     }  
  

Place a break point inside the event OnTokenRefresh in App.xaml.cs, run. Get Token. Use that token to test using Firebase Console

Answer 2

Hello,

Pushing notification is supported in MAUI, it's similar to Xamarin.

For using FCM in MAUI on Android, please refer to this GitHub issue Push Notification for MAUI #5458, and you could find the libraries needed in MAUI:

   <ItemGroup>  
       <PackageReference Include="Xamarin.Firebase.Messaging" Version="122.0.0" />'  
       <PackageReference Include="Xamarin.Google.Dagger" Version="2.39.1" />'  
       <PackageReference Include="Xamarin.GooglePlayServices.Base" Version="117.6.0" />'  
   </ItemGroup>  

Please feel free to let me know if you have any other issues.

Best Regards,

Alec Liu.

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Answer 3

We had to tweak it slightly to get this to work in Maui. Specify these in the <ItemGroup Condition="'$(TargetFramework)' == 'net6.0-android'">

<PackageReference Include="Xamarin.Google.Guava" Version="31.1.0.1" />  
<PackageReference Include="Xamarin.Google.Guava.ListenableFuture" Version="1.0.0.9" />  

next, add these to the Project group above.

    <XamarinGoogleGuavaOptOut>true</XamarinGoogleGuavaOptOut>  
    <XamarinGoogleGuavaListenableFutureOptOut>true</XamarinGoogleGuavaListenableFutureOptOut>  

If you have other small odd issues around Analytics by Google, we added these to align the packages

<PackageReference Include="R8.GoogleAnalytics" Version="2.1.3" />  

Lastly, to get the actual token to be requested, which was;t happening - we added this to the OnCreate() above the FirebasePushNotificationManager init.

FirebaseApp.InitializeApp(this);  

Hope this helps someone.

Answer 4

Please refer to this working project: https://github.com/mahab339/Pushdemoformaui

Pushdemoformaui

Export xamarin with hubs sample to maui (https://github.com/xamcat/mobcat-samples/tree/master/notification_hub_backend_service/src/xamarin)

• Details for project with backend: https://learn.microsoft.com/en-us/azure/developer/mobile-apps/notification-hubs-backend-service-xamarin-forms

Main changes:

• Use net 7 for nuget packages compatibility.
• For build action of google-servicesjson, install and import xamarin.googleplayservices.basement package to csproj file just before closing tag for project element. For example: <Import Project="C:\Users\Administrator\.nuget\packages\xamarin.googleplayservices.basement\118.1.0\build\MonoAndroid12.0\Xamarin.GooglePlayServices.Basement.targets" Condition="Exists('C:\Users\Administrator\.nuget\packages\xamarin.googleplayservices.basement\118.1.0\build\MonoAndroid12.0\Xamarin.GooglePlayServices.Basement.targets')" /> More on import element: https://learn.microsoft.com/en-us/visualstudio/msbuild/import-element-msbuild?view=vs-2022 Reference https://stackoverflow.com/questions/42677766/cant-set-build-action-to-googleservicejson
• Move service regesteration from bootstrap to app.xaml.cs constructor if possible.
• After each build, an error about auto generated AndroidManifest.xml. In (obj\Debug\net7.0-android\AndroidManifest.xml), add attribut (android:exported="true") to element service with (android:name) attribute value ending with PushNotificationFirebaseMessagingService and rebuild.