Rg.plugins.popup: An exception occurred while rendering the control

[pablogupi]

Hello,
I create new project with Prism Quickstart template and I can't preview using Visual Studio Community for Mac.
This is a error:

It doesn't work on Android as on iOS. The plugin is correctly initialized. This code is in AppDelegate.cs:

   public override bool FinishedLaunching(UIApplication uiApplication, NSDictionary launchOptions)
        {
            Rg.Plugins.Popup.Popup.Init();

            global::Xamarin.Forms.Forms.Init();
            global::FFImageLoading.Forms.Platform.CachedImageRenderer.Init();
            global::FFImageLoading.ImageService.Instance.Initialize(new FFImageLoading.Config.Configuration()
            {
                Logger = new Accesos.Services.DebugLogger()
            });

            // Code for starting up the Xamarin Test Cloud Agent
#if DEBUG
            Xamarin.Calabash.Start();
#endif
            LoadApplication(new App(new iOSInitializer()));

            return base.FinishedLaunching(uiApplication, launchOptions);
        }

and this code is in MainActivity.cs

 public class MainActivity : FormsAppCompatActivity
    {
        protected override void OnCreate(Bundle savedInstanceState)
        {
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;

            base.OnCreate(savedInstanceState);

            Rg.Plugins.Popup.Popup.Init(this, savedInstanceState);
            global::Xamarin.Forms.Forms.SetFlags("FastRenderers_Experimental");
            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
            global::FFImageLoading.Forms.Platform.CachedImageRenderer.Init(enableFastRenderer: true);
            global::FFImageLoading.ImageService.Instance.Initialize(new FFImageLoading.Config.Configuration()
            {
                Logger = new Accesos.Services.DebugLogger()
            });

            LoadApplication(new App(new AndroidInitializer()));
        }
    }

I using Visual Studio Community for Mac 7.5.4 (build 3) and Xamarin Forms 3.1.0.637273.
What could be the problem? Thanks a lot

[karimElJed]

Same problem here.
Visual Studio for Mac 7.6.11, Xamarin.Forms 3.1.0.637273., Rg.Plugins.Popup 1.1.4.168

[felipesouto]

I'm also experiencing this issue on Visual Studio for Mac 7.7 (build 1868), Xamarin.Forms 3.4.0.1008975, Rg.Plugins.Popup 1.1.5.180.

[rotorgames]

@pablogupi Does it happen only in Xamarin Preview? Does it work on a device or an emulator?

[karimElJed]

Yes, only in the Designer Preview. On a device or in the emulator the app runs fine.

[rotorgames]

@karimElJed I confirmed this issue and I was going to fix it soon.

[felipesouto]

I'm still experiencing this issue – Visual Studio for Mac 7.8 (build 1624), Xamarin.Forms 3.5.0.169047, Rg.Plugins.Popup 1.1.5.188.

[rotorgames]

@felipesouto I had a look on this issue but I still don't fix it. I hope I will do it in the next release.

[rotorgames]

Guys. Could you test the last version of the plugin in Development NuGet with the last version of Previewer?

I tested it and it worked fine. I think the Xamarin team has fixed this issue. Please give me actual feedback. Thanks.

[natsnudasoft]

Hi, I'm experiencing this issue also. How can we get the latest version of Previewer in Visual Studio 2017 to test this?
Visual Studio 2017 - 15.9.12
Xamarin.Forms - 3.6.0.344457
Rg.Plugins.Popup - 1.1.5.188
Prism.Plugins.Popup - 2.2.0.293

[geoffwc]

Hi all, I'm seeing this in VS 2019 for Mac. The previewer works but warning always appears. However a college using VS2017 Windows is saying the previewer is not loading.
Thanks

[geoffwc]

Figured out a workaround if you're using prism. Add this prop to your App.xaml.cs:
public bool IsDesignTime => PlatformInitializer == null;
Then in RegisterTypes method bypass RegisterPopupNavigationService at design-time:
protected override void RegisterTypes(IContainerRegistry containerRegistry)
{
if (!IsDesignTime)
{
containerRegistry.RegisterPopupNavigationService();
}

containerRegistry.RegisterSingleton<ILoggingService, AppCenterLoggingService>();

[natsnudasoft]

Figured out a workaround if you're using prism. Add this prop to your App.xaml.cs:
public bool IsDesignTime => PlatformInitializer == null;
Then in RegisterTypes method bypass RegisterPopupNavigationService at design-time:
protected override void RegisterTypes(IContainerRegistry containerRegistry)
{
if (!IsDesignTime)
{
containerRegistry.RegisterPopupNavigationService();
}

This workaround has stopped the issue for me. Thanks.

[rotorgames]

I tested it with the last version of XF and VS4Mac and I didn't get this issue.

I'll close it but don't be afraid to reopen it again if you still get this issues guys.