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.NET for iOS, Mac Catalyst, macOS, and tvOS provide open-source bindings of the Apple SDKs for use with .NET managed languages such as C#
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Mobile Blazor Bindings, properly assigning delegate object to the UNUserNotificationCenter object #10268

Closed ktaze1 closed 3 years ago

ktaze1 commented 3 years ago

I was following this tutorial to implement notifications through FCM. At their Register for remote notifications section there is a code snippet:

Project.iOS/AppDelegate.cs:

// Register your app for remote notifications.
if (UIDevice.CurrentDevice.CheckSystemVersion (10, 0)) {

    // For iOS 10 display notification (sent via APNS)
    UNUserNotificationCenter.Current.Delegate = this;

    var authOptions = UNAuthorizationOptions.Alert | UNAuthorizationOptions.Badge | UNAuthorizationOptions.Sound;
    UNUserNotificationCenter.Current.RequestAuthorization (authOptions, (granted, error) => {
        Console.WriteLine (granted);
    });
} else {
    // iOS 9 or before
    var allNotificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound;
    var settings = UIUserNotificationSettings.GetSettingsForTypes (allNotificationTypes, null);
    UIApplication.SharedApplication.RegisterUserNotificationSettings (settings);
}

UIApplication.SharedApplication.RegisterForRemoteNotifications ();

So seems like there are no problem but when I implemented this to my MBB hybrid project the line: UNUserNotificationCenter.Current.Delegate = this; gives an error, saying Cannot implicitly convert type 'MyApp.iOS.AppDelegate' to UserNotifications.IUNUserNotificationsCenterDelegate'. An explicit conversion exists

It won't let me compile but if I explicitly cast it into what it wants it also gives error.

Found another example of Xamarin Forms at this post (I translated mostly since I don't know Spanish) and they're doing the same.

Steps to Reproduce

  1. Create Hybrid Mobile Blazor Bindings Project (preview 5)
  2. At Project.iOS/AppDelegate.cs, adding UNUserNotificationCenter.Current.Delegate = this; gives error of Error CS0266 Cannot implicitly convert type 'Project.iOS.AppDelegate' to 'UserNotifications.IUNUserNotificationCenterDelegate'. An explicit conversion exists (are you missing a cast?)
  3. If explicit cast is applied, it gives error too saying it can't convert.

Expected Behavior

Actual Behavior

image

Environment

Microsoft Visual Studio Community 2019
Version 16.7.7
VisualStudio.16.Release/16.7.7+30621.155
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Community

Visual C++ 2019   00435-60000-00000-AA434
Microsoft Visual C++ 2019

ADL Tools Service Provider   1.0
This package contains services used by Data Lake tools

ASA Service Provider   1.0

ASP.NET and Web Tools 2019   16.7.532.28833
ASP.NET and Web Tools 2019

ASP.NET Core Razor Language Services   16.1.0.2035807+72d099b977d3a85e65fa3b0614ca8cfc803fef02
Provides languages services for ASP.NET Core Razor.

ASP.NET Web Frameworks and Tools 2019   16.7.532.28833
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   16.7.532.28833
Azure App Service Tools v3.0.0

Azure Data Lake Node   1.0
This package contains the Data Lake integration nodes for Server Explorer.

Azure Data Lake Tools for Visual Studio   2.4.6000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   16.7.532.28833
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.4.6000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   3.7.0-6.20514.1+600c0dadd199296df3ed07dfabdc014563a77f7c
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Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.2.6 (master@34d6af2)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

Fabric.DiagnosticEvents   1.0
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IntelliCode Extension   1.0
IntelliCode Visual Studio Extension Detailed Info

Microsoft Azure HDInsight Azure Node   2.4.6000.0
HDInsight Node under Azure Node

Microsoft Azure Hive Query Language Service   2.4.6000.0
Language service for Hive query

Microsoft Azure Service Fabric Tools for Visual Studio   16.0
Microsoft Azure Service Fabric Tools for Visual Studio

Microsoft Azure Stream Analytics Language Service   2.4.6000.0
Language service for Azure Stream Analytics

Microsoft Azure Stream Analytics Node   1.0
Azure Stream Analytics Node under Azure Node

Microsoft Azure Tools   2.9
Microsoft Azure Tools for Microsoft Visual Studio 2019 - v2.9.30701.1

Microsoft Continuous Delivery Tools for Visual Studio   0.4
Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE.

Microsoft JVM Debugger   1.0
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Microsoft Library Manager   2.1.79+ge3567815aa.RR
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
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Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers   1.1
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Mono Debugging for Visual Studio   16.7.5 (112c7bc)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   5.7.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

SQL Server Data Tools   16.0.62008.03130
Microsoft SQL Server Data Tools

Test Adapter for Boost.Test   1.0
Enables Visual Studio's testing tools with unit tests written for Boost.Test.  The use terms and Third Party Notices are available in the extension installation directory.

Test Adapter for Google Test   1.0
Enables Visual Studio's testing tools with unit tests written for Google Test.  The use terms and Third Party Notices are available in the extension installation directory.

ToolWindowHostedEditor   1.0
Hosting json editor into a tool window

TypeScript Tools   16.0.20702.2001
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   3.7.0-6.20514.1+600c0dadd199296df3ed07dfabdc014563a77f7c
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Visual C++ for Cross Platform Mobile Development (Android)   16.0.30309.115
Visual C++ for Cross Platform Mobile Development (Android)

Visual C++ for Linux Development   1.0.9.30523
Visual C++ for Linux Development

Visual F# Tools 10.10.0.0 for F# 4.7   16.7.0-beta.20361.3+3ef6f0b514198c0bfa6c2c09fefe41a740b024d5
Microsoft Visual F# Tools 10.10.0.0 for F# 4.7

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Container Tools Extensions (Preview)   1.0
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Visual Studio Tools for CMake   1.0
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Visual Studio Tools for Containers   1.0
Visual Studio Tools for Containers

Visual Studio Tools for Kubernetes   1.0
Visual Studio Tools for Kubernetes

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Foo   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

Xamarin   16.7.000.463 (d16-7@5209782)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.7.0.495 (remotes/origin/d16-7@79c0c522c)
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Xamarin.Android SDK   11.0.2.0 (d16-7/025fde9)
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    SQLite: xamarin/sqlite/3.32.1@1a3276b
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-7@017078f

Xamarin.iOS and Xamarin.Mac SDK   14.2.0.12 (e0ce49680)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

Build Logs

Example Project (If Possible)

https://github.com/ktaze1/CugemderMobileApp

ktaze1 commented 3 years ago

After some research I found that I didn't include the necessary Interfaces. AppDelegate class should look like this.

    [Register("AppDelegate")]
    public partial class AppDelegate : global::Xamarin.Forms.Platform.iOS.FormsApplicationDelegate, IUNUserNotificationCenterDelegate, IMessagingDelegate
    {
        //...
    }