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xamarin / xamarin-macios

.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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[BUG] MKMapView overlay not displayed #10320

Closed ProH4Ck closed 3 years ago

ProH4Ck commented 3 years ago

Steps to Reproduce

  1. Create new project using Visual Studio empty template
  2. Add a simple ViewController displaying a map:
public class MapViewController : UIViewController
{
    private MKMapView _map;

    public override void ViewDidLoad()
    {
        _map = new MKMapView();
        View = _map;

        _map.Delegate = new MapDelegate();
        _map.SetCenterCoordinate(new CLLocationCoordinate2D(44, 10), true);
        MKCircle circle = MKCircle.Circle(new CLLocationCoordinate2D(44, 10), 20000);
        _map.AddOverlay(circle);
        _map.SetVisibleMapRect(circle.BoundingMapRect, true);

        base.ViewDidLoad();
    }
}

internal class MapDelegate : MKMapViewDelegate
{
    public override MKOverlayRenderer OverlayRenderer(MKMapView mapView, IMKOverlay overlay)
    {
        if (overlay is MKCircle circleOverlay)
        {
            var cr = new MKCircleRenderer(circleOverlay)
            {
                StrokeColor = UIColor.Red,
                FillColor = UIColor.Red,
                Alpha = 1.0f,
                LineWidth = 1f
            };
            return cr;
        }

        return mapView.RendererForOverlay(overlay);
    }
}
  1. Try to add a simple circle overlay to the map

I checked with debugger and code in MKOverlayRenderer OverlayRenderer(MKMapView mapView, IMKOverlay overlay) is reached and correctly executed. All the variables are set and everything seems to be ok. I tried also to launch this sample https://docs.microsoft.com/en-us/samples/xamarin/ios-samples/mapdemo/ and same behavior: the red overlay does not appear!

Expected Behavior

Overlay is displayed

Actual Behavior

Overlay is not displayed

image

Environment

Microsoft Visual Studio Professional 2019
Version 16.8.3
VisualStudio.16.Release/16.8.3+30804.86
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Professional

Visual C++ 2019   00435-60000-00000-AA728
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   16.8.554.20160
ASP.NET and Web Tools 2019

ASP.NET Core Razor Language Services   16.1.0.2052803+84e121f1403378489b842e1797df2f3f5a49ac3c
Provides languages services for ASP.NET Core Razor.

ASP.NET Web Frameworks and Tools 2019   16.8.554.20160
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   16.8.554.20160
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   2.6.2000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   16.8.554.20160
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.6.2000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   3.8.0-5.20604.10+9ed4b774d20940880de8df1ca8b07508aa01c8cd
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Cookiecutter   16.8.20241.2
Provides tools for finding, instantiating and customizing templates in cookiecutter format.

Entity Framework Core Power Tools   2.5
Adds useful design-time EF Core DbContext features to the Visual Studio Solution Explorer context menu. 

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
Fabric Diagnostic Events

IntelliCode Extension   1.0
IntelliCode Visual Studio Extension Detailed Info

JetBrains ReSharper 2020.3   Build 203.0.20201211.113035
JetBrains ReSharper package for Microsoft Visual Studio. For more information about ReSharper, visit http://www.jetbrains.com/resharper. Copyright © 2020 JetBrains, Inc.

Microsoft Azure HDInsight Azure Node   2.6.2000.0
HDInsight Node under Azure Node

Microsoft Azure Hive Query Language Service   2.6.2000.0
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   2.6.2000.0
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 - v2.9.30924.1

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
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager   2.1.113+g422d40002e.RR
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

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   16.8.43 (00471f8)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   5.8.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

Office Developer Tools for Visual Studio   16.0.30502.00
Microsoft Office Developer Tools for Visual Studio

Oracle Developer Tools for Visual Studio   19.3.1.0
Oracle Developer Tools for Visual Studio Copyright (c) 2005, 2020

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

Python   16.8.20241.2
Provides IntelliSense, projects, templates, debugging, interactive windows, and other support for Python developers.

Python - Conda support   16.8.20241.2
Conda support for Python projects.

Python - Django support   16.8.20241.2
Provides templates and integration for the Django web framework.

Python - IronPython support   16.8.20241.2
Provides templates and integration for IronPython-based projects.

Python - Profiling support   16.8.20241.2
Profiling support for Python projects.

SQL Server Data Tools   16.0.62010.06180
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   16.0.21016.2001
TypeScript Tools for Microsoft Visual Studio

UnoPlatformPackage Extension   1.0
UnoPlatformPackage Visual Studio Extension Detailed Info

Visual Basic Tools   3.8.0-5.20604.10+9ed4b774d20940880de8df1ca8b07508aa01c8cd
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools   16.8.0-beta.20507.4+da6be68280c89131cdba2045525b80890401defd
Microsoft Visual F# Tools

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   1.0
View, manage, and diagnose containers within Visual Studio.

Visual Studio Tools for CMake   1.0
Visual Studio Tools for CMake

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

Workflow Manager Tools 1.0   1.0
This package contains the necessary Visual Studio integration components for Workflow Manager.

Xamarin   16.8.000.260 (d16-8@fd405a2)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.8.0.507 (remotes/origin/d16-8@e87b24884)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   16.8.112 (86385a3)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   11.1.0.17 (d16-8/c0e2b8e)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: be2226b
    Java.Interop: xamarin/java.interop/d16-8@79d9533
    ProGuard: Guardsquare/proguard/proguard6.2.2@ebe9000
    SQLite: xamarin/sqlite/3.32.1@1a3276b
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-8@2fb1cbc

Xamarin.iOS and Xamarin.Mac SDK   14.6.0.15 (87a1b18d8)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

Build Logs

buildlog.txt

Example Project (If Possible)

XamarinMapSample.zip

tj-devel709 commented 3 years ago

Hello, thank you very much for your feedback and for providing the requested information.

I downloaded the zip and ran on a the ipad 8th generation simulator using iOS 14.3 and received the result below.

MKMapViewIpad

I am using: Visual Studio Enterprise 2019 for Mac Version 8.8.4 Xamarin Mac version 7.0.0.15 Xamarin iOS version 14.6.0.15 Mono 6.12.0.113

Are you still having this issue?

ProH4Ck commented 3 years ago

On my simulator the red circle does not appear. I tried also with an iPhone simulator but nothing changed. Here is my simulator version: image

ProH4Ck commented 3 years ago

It's definitely a simulator problem. Tried debug directly on my physical iPhone and it works as expected

image

tj-devel709 commented 3 years ago

Hmm it seems that we have the same simulator version if I am not mistaken. image

Although, I am glad that you were able to run on your physical device. Since it appears that the MKMapView overlay is working, I will close this issue, but feel free to create a new issue or reopen this one if you find other bugs! Thank you!