Will Xamarin.Google.iOS.UserMessagingPlatform be ever updated and documented? It has been almost 4 years since the last update.

[FANMixco]

Fellows, it seems the last time this library (Xamarin.Google.iOS.UserMessagingPlatform) was in 2020, and several Devs are facing issues. Also, there is no document of how to use it:
https://www.nuget.org/packages/Xamarin.Google.iOS.UserMessagingPlatform

You can see questions concerns in different places like here:

• Collect consent of European users GDPR - User Messaging Platform (UMP) SDK XamarinComponents#931
• https://stackoverflow.com/questions/68302342/guide-for-xamarin-google-usermessagingplatform/71299843?noredirect=1#comment135930665_71299843

Currently, only the Android lib is being updated from time to time:
https://www.nuget.org/packages/Xamarin.Google.UserMessagingPlatform

Any additional thoughts, @mikeks?

[FANMixco]

Bing Chat provided me this answer of how use it, but I'm not sure it's workable. @mikeks would be a better tester than me.

Thank you for clarifying your question. UserMessagingPlatform is a library that helps you display GDPR consent messages to your app users in the European Economic Area (EEA) or the UK¹. It is part of the Google Mobile Ads SDK and works with AdMob and other Google advertising products².

To use UserMessagingPlatform in your iOS app, you need to follow these steps:

• Install the Xamarin.Google.iOS.UserMessagingPlatform NuGet package in your app project³.
• Add the User Messaging Platform framework to your Xcode project⁴.
• Initialize the Google Mobile Ads SDK in your app delegate's FinishedLaunching method.
• Request consent information from the User Messaging Platform API using the ConsentInformation class.
• Check if the user is located in the EEA or the UK using the IsRequestLocationInEeaOrUnknown property.
• If yes, load and display a consent message using the ConsentForm class.
• Handle the user's consent choice using the ConsentStatus enum.

Here is an example of how to use UserMessagingPlatform in your iOS app:

using Google.MobileAds;
using Google.MobileAds.Consent;
using UIKit;

namespace MyApp
{
    public class AppDelegate : UIApplicationDelegate
    {
        public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
        {
            // Initialize Google Mobile Ads SDK
            MobileAds.SharedInstance.Start(null);

            // Request consent information
            ConsentInformation.SharedInstance.RequestConsentInfoUpdate(new string[] { "pub-0[1](https://cookieinformation.com/resources/blog/is-your-mobile-app-gdpr-compliant/)[2](https://www.appknox.com/resources/guides/make-your-mobile-app-compliant-to-gdpr)[3](https://support.google.com/admob/answer/10113207?hl=en)[4](https://stackoverflow.com/questions/50486708/how-to-add-gdpr-consent-dialog-in-app-and-gdpr-related-confusions)56789012345" }, (error) =>
            {
                if (error == null)
                {
                    // Check user location
                    if (ConsentInformation.SharedInstance.IsRequestLocationInEeaOrUnknown)
                    {
                        // Load consent message
                        ConsentForm consentForm = new ConsentForm();
                        consentForm.Load((loadError) =>
                        {
                            if (loadError == null)
                            {
                                // Show consent message
                                consentForm.Show((dismissError, userPrefersAdFree) =>
                                {
                                    if (dismissError == null)
                                    {
                                        // Handle user choice
                                        switch (ConsentInformation.SharedInstance.ConsentStatus)
                                        {
                                            case ConsentStatus.NonPersonalized:
                                                // Show non-personalized ads
                                                break;
                                            case ConsentStatus.Personalized:
                                                // Show personalized ads
                                                break;
                                            default:
                                                // No consent given, do not show ads
                                                break;
                                        }
                                    }
                                });
                            }
                        });
                    }
                }
            });

            return true;
        }
    }
}

I hope this helps you with your app development. If you have any other questions, please feel free to ask. 😊

Source: Conversation with Bing, 9/18/2023
(1) GDPR compliance for mobile apps: A checklist in 7 steps. https://cookieinformation.com/resources/blog/is-your-mobile-app-gdpr-compliant/.
(2) Guide: Make Your Mobile App Compliant to GDPR - Appknox. https://www.appknox.com/resources/guides/make-your-mobile-app-compliant-to-gdpr.
(3) Create GDPR messages for apps - Google AdMob Help. https://support.google.com/admob/answer/10113207?hl=en.
(4) How to add GDPR consent dialog in app and GDPR related confusions. https://stackoverflow.com/questions/50486708/how-to-add-gdpr-consent-dialog-in-app-and-gdpr-related-confusions.

[BenEastpoint]

Hi @FANMixco, I have a .NET MAUI project running on .NET 7. I've implemented GDPR consent forms on Android using Xamarin.Google.UserMessagingPlatform, but have struggled to find anything for iOS. I tried to follow the guide above but "using Google.MobileAds.Consent;" returns:

"The type or namespace name 'Consent' does not exist in the namespace 'Google.MobileAds' (are you missing an assembly reference?)"

And as a result none of the code below that point works.

I have the "Xamarin.Google.iOS.UserMessagingPlatform" nuget package installed.

Do you have any idea where I'm going wrong? Or is the package just not compatible with .NET MAUI?.

[FANMixco]

Hi @FANMixco, I have a .NET MAUI project running on .NET 7. I've implemented GDPR consent forms on Android using Xamarin.Google.UserMessagingPlatform, but have struggled to find anything for iOS. I tried to follow the guide above but "using Google.MobileAds.Consent;" returns:

"The type or namespace name 'Consent' does not exist in the namespace 'Google.MobileAds' (are you missing an assembly reference?)"

And as a result none of the code below that point works.

I have the "Xamarin.Google.iOS.UserMessagingPlatform" nuget package installed.

Do you have any idea where I'm going wrong? Or is the package just not compatible with .NET MAUI?.

Hi @BenEastpoint, I'm the wrong candidate for your question. I don't develop for iOS. I opened the question since several people brought the same question to StackOverflow to my Android's example. I would say that as I raised in this ticket, the lib might be incompatible since as you could read in this question, the last time it was updated it was several years ago. You can check the contributors of this repo and asked them.

[tipa]

I agree that Microsoft should provide bindings for this component. It's one of the core components for iOS developers and having them available would make the .NET iOS platform more attractive.
I have copied and fixed the bindings myself - tested with Mobile Ads SDK 10.12.0 & UMP SDK 2.1.0:
Google.MobileAds.zip

To use it, you need to download the Objective-C package from here and copy the framework folders into the project.
I am sure there are many errors with my bindings and I have commented out a lot of code that I personally don't need so again, it would be great if proper bindings could be provided from Microsoft.

[FANMixco]

Any thoughts @rolfbjarne? I get frequent questions about this topic and I don't even own a mac.

[FANMixco]

Do you know if this project is still alive @pjcollins?

[rolfbjarne]

Any thoughts @rolfbjarne? I get frequent questions about this topic and I don't even own a mac.

That's a question for our PM (CC @davidortinau) - or you could contact him at David.Ortinau@microsoft.com.

[FANMixco]

Any thoughts @rolfbjarne? I get frequent questions about this topic and I don't even own a mac.

That's a question for our PM (CC @davidortinau) - or you could contact him at David.Ortinau@microsoft.com.

Thank you, @rolfbjarne. @tipa or @BenEastpoint, can you contact @davidortinau? This topic is outside my scope since I don't even own a mac.

[pboisso]

@tipa thanks for sharing your bindings, this is very useful. Looks like those are for .Net Maui. Working on converting them for Xamarin Forms as we are still running Forms in prod at this time. Maui is a work in progress on our side. Have you successfully ran them these bindings with Forms?

[tipa]

No those bindings are not for Maui. I am using neither MAUI nor Forms, I am using "vanilla" .NET 8 for iOS

[pboisso]

Oh I see. Perfect, will try to figure out the Xamarin way from them then. Thanks again, this is a very good starting point. Will provide an update and contribute if we make it happen.

[FANMixco]

Any comments @davidortinau? It seems the project is kind of death and no one is providing any input. If the project is dead, perhaps, it will be a good idea to achieve it or add some comments. Thanks.

[alexmartinezm]

Any updates on this? It's very frustrating to deal with these kind of issues on a framework backed and supported by Microsoft.