Xamarin.Google.UserMessagingPlatform 指南？答案

【问题标题】：Guide for Xamarin.Google.UserMessagingPlatform?Xamarin.Google.UserMessagingPlatform 指南？
【发布时间】：2021-09-18 23:05:52
【问题描述】：

我正处于使用 Xamarin / C# 设置我的 Android 应用程序的最后阶段。我已经实施了 Google Admob，但 GDPR 规则规定我必须有隐私声明才能显示广告。谷歌的文档说同意 SDK 已被弃用，我应该使用新的用户消息传递平台https://developers.google.com/admob/ump/android/quick-start

我已经下载了 Nuget 包 Xamarin.Google.UserMessagingPlatform (https://www.nuget.org/packages/Xamarin.Google.UserMessagingPlatform/1.0.0?_src=template) 并导入了库，但我正在努力将 Google 的代码翻译到我的项目中，并且在网上搜索后似乎没有任何地方的实时文档链接带有 C#/Xamarin 中的实现示例。包 URL 404s 上的项目站点和源存储库指向通用 Xamarin 存储库，但我在其中找不到对 UMP 的引用。

具体来说，我不知道如何处理的一种说法是：

new ConsentInformation.OnConsentInfoUpdateSuccessListener() {
            @Override
            public void onConsentInfoUpdateSuccess() {
                // The consent information state was updated.
                // You are now ready to check if a form is available.
            }
        },
        new ConsentInformation.OnConsentInfoUpdateFailureListener() {
            @Override
            public void onConsentInfoUpdateFailure(FormError formError) {
                // Handle the error.
            }

有没有用 C# 实现的例子？

【问题讨论】：

我已经搜索了项目站点并得到了404。我会反馈这个问题。
你找到任何Android完整实现了吗？因为我也找不到任何东西。谷歌的代码在我看来相当薄弱，几乎没有，而且我敢肯定有缺失的部分。
不幸的是还没有
已报告此问题。稍后会修复。

标签： c# android xamarin xamarin.android user-messaging-platform

【解决方案1】：

在 MainActivity.OnCreate 中，在调用 base.OnCreate(bundle) 之后的一段时间；插入此代码 sn-p:

        App.LogMessage("DEBUG: MainActivity.OnCreate: Starting consent management flow, via UserMessagingPlatform.");
        try
        {
            ConsentRequestParameters requestParameters = new ConsentRequestParameters
                .Builder()
                .SetTagForUnderAgeOfConsent(false)
                .Build();

            IConsentInformation consentInformation = UserMessagingPlatform.GetConsentInformation(this);

            consentInformation.RequestConsentInfoUpdate(
                this,
                requestParameters,
                new GoogleUMPConsentUpdateSuccessListener(
                    () =>
                    {
                        // The consent information state was updated.
                        // You are now ready to check if a form is available.
                        if (consentInformation.IsConsentFormAvailable)
                        {
                            UserMessagingPlatform.LoadConsentForm(
                                this,
                                new GoogleUMPFormLoadSuccessListener((IConsentForm f)=> {
                                    this.googleUMPConsentForm = f;
                                    this.googleUMPConsentInformation = consentInformation;
                                    App.LogMessage("DEBUG: MainActivity.OnCreate: Consent management flow: LoadConsentForm has loaded a form, which will be shown if necessary, once the ViewModel is ready.");
                                    DisplayAdvertisingConsentFormIfNecessary();
                                }),
                                new GoogleUMPFormLoadFailureListener((FormError e)=> {
                                    // Handle the error.
                                    App.LogMessage("ERROR: MainActivity.OnCreate: Consent management flow: failed in LoadConsentForm with error " + e.Message);
                                }));
                        }
                        else
                        {
                            App.LogMessage("DEBUG: MainActivity.OnCreate: Consent management flow: RequestConsentInfoUpdate succeeded but no consent form was available.");
                        }
                    }),
                new GoogleUMPConsentUpdateFailureListener(
                    (FormError e) =>
                    {
                        // Handle the error.
                        App.LogMessage("ERROR: MainActivity.OnCreate: Consent management flow: failed in RequestConsentInfoUpdate with error " + e.Message);
                    })
                );
        }
        catch (Exception ex)
        {
            App.LogMessage("ERROR: MainActivity.OnCreate: Exception thrown during consent management flow: ", ex);
        }

然后，在 MainActivity 类的主体中，您还需要添加以下定义：

    private IConsentForm googleUMPConsentForm = null;
    private IConsentInformation googleUMPConsentInformation = null;
    public void DisplayAdvertisingConsentFormIfNecessary()
    {
        try
        {
            if (googleUMPConsentForm != null && googleUMPConsentInformation != null)
            {
                    /* ConsentStatus:
                        Unknown = 0,
                        NotRequired = 1,
                        Required = 2,
                        Obtained = 3
                    */
                if (googleUMPConsentInformation.ConsentStatus == 2)
                {
                    App.LogMessage("DEBUG: MainActivity.DisplayAdvertisingConsentFormIfNecessary: Consent form is being displayed.");
                    DisplayAdvertisingConsentForm();
                }
                else
                {
                    App.LogMessage("DEBUG: MainActivity.DisplayAdvertisingConsentFormIfNecessary: Consent form is not being displayed because consent status is "+ googleUMPConsentInformation.ConsentStatus.ToString());
                }
            }
            else
            {
                App.LogMessage("ERROR: MainActivity.DisplayAdvertisingConsentFormIfNecessary: consent form or consent information missing.");
            }
        }
        catch(Exception ex)
        {
            App.LogMessage("ERROR: MainActivity.DisplayAdvertisingConsentFormIfNecessary: Exception thrown: ", ex);
        }
    }

    public void DisplayAdvertisingConsentForm()
    {
        try
        {
            if (googleUMPConsentForm != null && googleUMPConsentInformation != null)
            {
                App.LogMessage("DEBUG: MainActivity.DisplayAdvertisingConsentForm: Consent form is being displayed.");

                googleUMPConsentForm.Show(this, new GoogleUMPConsentFormDismissedListener(
                        (FormError f) =>
                        {
                            if (googleUMPConsentInformation.ConsentStatus == 2) // required
                            {
                                App.LogMessage("ERROR: MainActivity.DisplayAdvertisingConsentForm: Consent was dismissed; showing it again because consent is still required.");
                                 DisplayAdvertisingConsentForm();
                            }
                        }));
            }
            else
            {
                App.LogMessage("ERROR: MainActivity.DisplayAdvertisingConsentForm: consent form or consent information missing.");
            }
        }
        catch (Exception ex)
        {
            App.LogMessage("ERROR: MainActivity.DisplayAdvertisingConsentForm: Exception thrown: ", ex);
        }
    }

    public class GoogleUMPConsentFormDismissedListener : Java.Lang.Object, IConsentFormOnConsentFormDismissedListener
    {
        public GoogleUMPConsentFormDismissedListener(Action<FormError> failureAction)
        {
            this.a = failureAction;
        }
        public void OnConsentFormDismissed(FormError f)
        {
            a(f);
        }

        private Action<FormError> a = null;
    }


    public class GoogleUMPConsentUpdateFailureListener : Java.Lang.Object, IConsentInformationOnConsentInfoUpdateFailureListener
    {
        public GoogleUMPConsentUpdateFailureListener(Action<FormError> failureAction)
        {
            this.a = failureAction;
        }
        public void OnConsentInfoUpdateFailure(FormError f)
        {
            a(f);
        }

        private Action<FormError> a = null;
    }

    public class GoogleUMPConsentUpdateSuccessListener : Java.Lang.Object, IConsentInformationOnConsentInfoUpdateSuccessListener
    {
        public GoogleUMPConsentUpdateSuccessListener(Action successAction)
        {
            this.a = successAction;
        }

        public void OnConsentInfoUpdateSuccess()
        {
            a();
        }

        private Action a = null;
    }

    public class GoogleUMPFormLoadFailureListener : Java.Lang.Object, UserMessagingPlatform.IOnConsentFormLoadFailureListener
    {
        public GoogleUMPFormLoadFailureListener(Action<FormError> failureAction)
        {
            this.a = failureAction;
        }
        public void OnConsentFormLoadFailure(FormError e)
        {
            a(e);
        }

        private Action<FormError> a = null;
    }

    public class GoogleUMPFormLoadSuccessListener : Java.Lang.Object, UserMessagingPlatform.IOnConsentFormLoadSuccessListener
    {
        public GoogleUMPFormLoadSuccessListener(Action<IConsentForm> successAction)
        {
            this.a = successAction;
        }
        public void OnConsentFormLoadSuccess(IConsentForm f)
        {
            a(f);
        }

        private Action<IConsentForm> a = null;
    }

【讨论】：

【解决方案2】：

我在我的博客中写了完整的tutorial，但在这里你有它：

AdMob 部分

转到您的AdMob account。
转到隐私和消息并选择电话图标。

创建新消息并填写所需信息。

配置您的消息：

为您的应用添加隐私权政策：

保存并发布。

C# 部分

从 NuGet 下载 Xamarin.Google.UserMessagingPlatform。
仔细检查您的 AndroidManifest.xml 是否包含以下两行：

<activity android:name="com.google.android.gms.ads.AdActivity" android:value="AD_UNIT_ID" android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" android:theme="@android:style/Theme.Translucent" />
<meta-data android:name="com.google.android.gms.ads.APPLICATION_ID" android:value="APP_ID" />

您可以从您的 AdMob 帐户中获取 AD_UNIT_ID 和 APP_ID：

在此行之后加载/复制 GDPR 代码（之前不要这样做！）：

MobileAds.Initialize(this);

复制并粘贴此代码：

private void SetGDPR()
{
    Console.WriteLine("DEBUG: MainActivity.OnCreate: Starting consent management flow, via UserMessagingPlatform.");
    try
    {
#if DEBUG
        var debugSettings = new Xamarin.Google.UserMesssagingPlatform.ConsentDebugSettings.Builder(this)
        .SetDebugGeography(Xamarin.Google.UserMesssagingPlatform.ConsentDebugSettings
                .DebugGeography
                .DebugGeographyEea)
        .AddTestDeviceHashedId(Android.Provider.Settings.Secure.GetString(this.ContentResolver,
                                            Android.Provider.Settings.Secure.AndroidId))
        .Build();
#endif

        var requestParameters = new Xamarin.Google.UserMesssagingPlatform.ConsentRequestParameters
            .Builder()
            .SetTagForUnderAgeOfConsent(false)
#if DEBUG
            .SetConsentDebugSettings(debugSettings)
#endif
            .Build();

        var consentInformation = Xamarin.Google.UserMesssagingPlatform.UserMessagingPlatform.GetConsentInformation(Context);

        consentInformation.RequestConsentInfoUpdate(
            Activity,
            requestParameters,
            new GoogleUMPConsentUpdateSuccessListener(
                () =>
                {
                // The consent information state was updated.
                // You are now ready to check if a form is available.
                if (consentInformation.IsConsentFormAvailable)
                    {
                        Xamarin.Google.UserMesssagingPlatform.UserMessagingPlatform.LoadConsentForm(
                            Context,
                            new GoogleUMPFormLoadSuccessListener((Xamarin.Google.UserMesssagingPlatform.IConsentForm f) => {
                                googleUMPConsentForm = f;
                                googleUMPConsentInformation = consentInformation;
                                Console.WriteLine("DEBUG: MainActivity.OnCreate: Consent management flow: LoadConsentForm has loaded a form, which will be shown if necessary, once the ViewModel is ready.");
                                DisplayAdvertisingConsentFormIfNecessary();
                            }),
                            new GoogleUMPFormLoadFailureListener((Xamarin.Google.UserMesssagingPlatform.FormError e) => {
                            // Handle the error.
                            Console.WriteLine("ERROR: MainActivity.OnCreate: Consent management flow: failed in LoadConsentForm with error " + e.Message);
                            }));
                    }
                    else
                    {
                        Console.WriteLine("DEBUG: MainActivity.OnCreate: Consent management flow: RequestConsentInfoUpdate succeeded but no consent form was available.");
                    }
                }),
            new GoogleUMPConsentUpdateFailureListener(
                (Xamarin.Google.UserMesssagingPlatform.FormError e) =>
                {
                // Handle the error.
                Console.WriteLine("ERROR: MainActivity.OnCreate: Consent management flow: failed in RequestConsentInfoUpdate with error " + e.Message);
                })
            );
    }
    catch (Exception ex)
    {
        Console.WriteLine("ERROR: MainActivity.OnCreate: Exception thrown during consent management flow: ", ex);
    }
}

private Xamarin.Google.UserMesssagingPlatform.IConsentForm googleUMPConsentForm = null;
private Xamarin.Google.UserMesssagingPlatform.IConsentInformation googleUMPConsentInformation = null;
public void DisplayAdvertisingConsentFormIfNecessary()
{
    try
    {
        if (googleUMPConsentForm != null && googleUMPConsentInformation != null)
        {
            /* ConsentStatus:
                Unknown = 0,
                NotRequired = 1,
                Required = 2,
                Obtained = 3
            */
            if (googleUMPConsentInformation.ConsentStatus == 2)
            {
                Console.WriteLine("DEBUG: MainActivity.DisplayAdvertisingConsentFormIfNecessary: Consent form is being displayed.");
                DisplayAdvertisingConsentForm();
            }
            else
            {
                Console.WriteLine("DEBUG: MainActivity.DisplayAdvertisingConsentFormIfNecessary: Consent form is not being displayed because consent status is " + googleUMPConsentInformation.ConsentStatus.ToString());
            }
        }
        else
        {
            Console.WriteLine("ERROR: MainActivity.DisplayAdvertisingConsentFormIfNecessary: consent form or consent information missing.");
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("ERROR: MainActivity.DisplayAdvertisingConsentFormIfNecessary: Exception thrown: ", ex);
    }
}

public void DisplayAdvertisingConsentForm()
{
    try
    {
        if (googleUMPConsentForm != null && googleUMPConsentInformation != null)
        {
            Console.WriteLine("DEBUG: MainActivity.DisplayAdvertisingConsentForm: Consent form is being displayed.");

            googleUMPConsentForm.Show(Activity, new GoogleUMPConsentFormDismissedListener(
                    (Xamarin.Google.UserMesssagingPlatform.FormError f) =>
                    {
                        if (googleUMPConsentInformation.ConsentStatus == 2) // required
                    {
                            Console.WriteLine("ERROR: MainActivity.DisplayAdvertisingConsentForm: Consent was dismissed; showing it again because consent is still required.");
                            DisplayAdvertisingConsentForm();
                        }
                    }));
        }
        else
        {
            Console.WriteLine("ERROR: MainActivity.DisplayAdvertisingConsentForm: consent form or consent information missing.");
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("ERROR: MainActivity.DisplayAdvertisingConsentForm: Exception thrown: ", ex);
    }
}

public class GoogleUMPConsentFormDismissedListener : Java.Lang.Object, Xamarin.Google.UserMesssagingPlatform.IConsentFormOnConsentFormDismissedListener
{
    public GoogleUMPConsentFormDismissedListener(Action<Xamarin.Google.UserMesssagingPlatform.FormError> failureAction)
    {
        a = failureAction;
    }
    public void OnConsentFormDismissed(Xamarin.Google.UserMesssagingPlatform.FormError f)
    {
        a(f);
    }

    private Action<Xamarin.Google.UserMesssagingPlatform.FormError> a = null;
}

public class GoogleUMPConsentUpdateFailureListener : Java.Lang.Object, Xamarin.Google.UserMesssagingPlatform.IConsentInformationOnConsentInfoUpdateFailureListener
{
    public GoogleUMPConsentUpdateFailureListener(Action<Xamarin.Google.UserMesssagingPlatform.FormError> failureAction)
    {
        a = failureAction;
    }
    public void OnConsentInfoUpdateFailure(Xamarin.Google.UserMesssagingPlatform.FormError f)
    {
        a(f);
    }

    private Action<Xamarin.Google.UserMesssagingPlatform.FormError> a = null;
}

public class GoogleUMPConsentUpdateSuccessListener : Java.Lang.Object, Xamarin.Google.UserMesssagingPlatform.IConsentInformationOnConsentInfoUpdateSuccessListener
{
    public GoogleUMPConsentUpdateSuccessListener(Action successAction)
    {
        a = successAction;
    }

    public void OnConsentInfoUpdateSuccess()
    {
        a();
    }

    private Action a = null;
}

public class GoogleUMPFormLoadFailureListener : Java.Lang.Object, Xamarin.Google.UserMesssagingPlatform.UserMessagingPlatform.IOnConsentFormLoadFailureListener
{
    public GoogleUMPFormLoadFailureListener(Action<Xamarin.Google.UserMesssagingPlatform.FormError> failureAction)
    {
        a = failureAction;
    }
    public void OnConsentFormLoadFailure(Xamarin.Google.UserMesssagingPlatform.FormError e)
    {
        a(e);
    }

    private Action<Xamarin.Google.UserMesssagingPlatform.FormError> a = null;
}

public class GoogleUMPFormLoadSuccessListener : Java.Lang.Object, Xamarin.Google.UserMesssagingPlatform.UserMessagingPlatform.IOnConsentFormLoadSuccessListener
{
    public GoogleUMPFormLoadSuccessListener(Action<Xamarin.Google.UserMesssagingPlatform.IConsentForm> successAction)
    {
        a = successAction;
    }
    public void OnConsentFormLoadSuccess(Xamarin.Google.UserMesssagingPlatform.IConsentForm f)
    {
        a(f);
    }

    private Action<Xamarin.Google.UserMesssagingPlatform.IConsentForm> a = null;
}

加载 GDPR：

MobileAds.Initialize(this);
SetGDPR();

仅此而已！

【讨论】：