MauiAppBuilder.Services.AddGeofencing VS communitytoolkit/mvvm/ioc.AddGeofencing

[rokmeglic71]

#1 Adding AddGeofencing using MauiAppBuilder.Services
builder.Services.AddGeofencing();

#2 Adding AddGeofencing using communitytoolkit/mvvm/ioc.
ServiceCollection services = new();
services.AddGeofencing();

#1 Access GeofenceManager using MauiAppBuilder.Services
MauiProgram.GetServiceProvider().GetRequiredService()
works.

#2 Access GeofenceManager using communitytoolkit/mvvm/ioc.
App.Services.GetRequiredService()

Error:
[0:] Application error: System.InvalidOperationException: Unable to resolve service for type 'Shiny.IPlatform' while attempting to activate 'Shiny.Locations.GeofenceManager'.
Message: Unable to resolve service for type 'Shiny.IPlatform' while attempting to activate 'Shiny.Locations.GeofenceManager'.
Sender: System.Object
--------------------------------------
System.InvalidOperationException: Unable to resolve service for type 'Shiny.IPlatform' while attempting to activate 'Shiny.Locations.GeofenceManager'.
Unable to resolve service for type 'Shiny.IPlatform' while attempting to activate 'Shiny.Locations.GeofenceManager'.
--------------------------------------

[0:] Application error: System.InvalidOperationException: Unable to resolve service for type 'Shiny.IPlatform' while attempting to activate 'Shiny.Locations.GeofenceManager'.
Message: Unable to resolve service for type 'Shiny.IPlatform' while attempting to activate 'Shiny.Locations.GeofenceManager'.
TargetSite: Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceCallSite[] CreateArgumentCallSites(Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceIdentifier, System.Type, Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteChain, System.Reflection.ParameterInfo[], Boolean)
Sender: System.Object

Any idea why?

[aritchie]

Please follow all the setup files here: https://shinylib.net/client/locations/geofencing/#setup

[rokmeglic71]

I did and it works.

If you use Community Toolkit -> Dependancy Injection -> Ioc it does not. It is just a hand to others, if they used Community Toolkit -> Dependancy Injection -> Ioc instead of native MAUI MauiAppBuilder builder.services and they are wondering, why it does not work.

I do agree I could make above discussion more clear.

[aritchie]

From the instructions I sent, you'll notice a UseShiny call which is part of Shiny.Hosting.Maui that adds services like IPlatform and hooks lifecycles for the platforms through MAUI. In your code above, I don't see that call but it only exists off the MauiAppBuilder. You would have to emulate that yourself if you want to go "off the path".

[rokmeglic71]

Yes @aritchie , I did follow that, added ".UseShiny()" and it works.

I am saying, when using Community Toolkit -> Dependancy Injection -> Ioc and calling .AddGeofencing, it does not work. ioc is part of Microsoft.Extensions.DependencyInjection.

[aritchie]

Yes. I get it doesn't work with your IOC setup because the UseShiny call needs to be added to it. You can't just call AddGeofencing and have everything working. The UseShiny call only exists off the MauiAppBuilder. If you want to use your CT IOC, you need to manually add all of the things UseShiny does.

[rokmeglic71]

Thank you @aritchie, I checked the UseShiny code and saw the builder.Services.AddSingleton, which adds what I am missing above in my IOC. Sorry for taking your time. Did not see that, I thought using UseShiny in MauiAppBuilder would also work for my IOC.