在 xamarin 中实施 admob android 抛出 Java.Lang.RuntimeException

Question

我正在使用 xamarin 创建一个 android 应用程序并希望使用 admob 添加广告，我已经注册并创建了一个横幅单元，所以我有一个应用程序 ID 和一个广告 ID。我已经根据一些指南实现了所有内容，但是在我想在我的设备上运行它抛出以下异常：

Java.Lang.RuntimeException
Message=Unable to get provider com.google.android.gms.ads.MobileAdsInitProvider: java.lang.IllegalStateException: 

******************************************************************************
* The Google Mobile Ads SDK was initialized incorrectly. AdMob publishers    *
* should follow the instructions here: googl link to add a valid  *
* App ID inside the AndroidManifest. Google Ad Manager publishers should     *
* follow instructions here: googl link.                           *
******************************************************************************

这是我AndroidManifest.xml的相关部分：

<meta-data android:name="com.google.android.gms.ads.APPLICATION_ID" 
               android:value="ca-app-pub-myappid"/> <!-- I have my actual app id here -->
    <activity android:name="com.google.android.gms.ads.AdActivity" 
              android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" 
              android:exported="false" 
              android:theme="@android:style/Theme.Translucent" />
    <provider android:name="com.google.android.gms.ads.MobileAdsInitProvider" 
              android:authorities="com.companyname.tapitmate.mobileadsinitprovider" 
              android:exported="false" 
              android:initOrder="100" />
    <meta-data android:name="com.google.android.gms.version" 
               android:value="@integer/google_play_services_version" />

这是我的广告class:

public class AdControlView : View
{
}

这是我的视图渲染器：

public class AdViewRenderer : ViewRenderer<AdControlView, AdView>
    {
        //This is the test id according to the documentation
        private readonly string _adUnitId = "ca-app-pub-3940256099942544/6300978111";
        private readonly AdSize _adSize = AdSize.SmartBanner;
        private AdView _adView;

        public AdViewRenderer(Context context) : base(context)
        {
        }

        AdView CreateAdView()
        {
            if (_adView != null)
                return _adView;
            _adView = new AdView(Context);
            _adView.AdSize = _adSize;
            _adView.AdUnitId = _adUnitId;
            var adParams = new LinearLayout.LayoutParams(LayoutParams.WrapContent, LayoutParams.WrapContent);
            _adView.LayoutParameters = adParams;
            _adView.LoadAd(new AdRequest.Builder().Build());
            return _adView;
        }

        protected override void OnElementChanged(ElementChangedEventArgs<AdControlView> e)
        {
            base.OnElementChanged(e);
            if (Control is null)
            {
                CreateAdView();
                SetNativeControl(_adView);
            }
        }
    }

这是我的主要内容 activity:

protected override void OnCreate(Bundle savedInstanceState)
        {
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;
            RequestedOrientation = ScreenOrientation.Portrait;

            base.OnCreate(savedInstanceState);

            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
            MobileAds.Initialize(ApplicationContext);// I have tried both ways, same exception.
            //MobileAds.Initialize(ApplicationContext, "myactualappid");
            LoadApplication(new App());

我正在使用：

Xamarin.Essentials 1.5.1
Xamarin.Forms 4.5.0.396
Xamarin.GooglePlayServices.Ads71.1720.1

我做错了什么？请帮忙。 }

Answer 1

很可能你只需要删除 MobileAdsInitProvider:

<provider
    android:name="com.google.android.gms.ads.MobileAdsInitProvider" 
    android:authorities="com.companyname.tapitmate.mobileadsinitprovider" 
    android:exported="false" 
    android:initOrder="100" />

documentation连它都没有；因此我假设你指的是一个过时的例子。

Answer 2

看来您错过了 ExportRenderer

[assembly: ExportRenderer(typeof(AdControlView), typeof(AdViewRenderer))]

在 mainactivity 下面的行应该在 Forms.Init 行之前，你已经在 Init

之后添加了

  MobileAds.Initialize(ApplicationContext, "ca-app-pub-3940256099942544/6300978111");

您的清单应在应用程序元素内的元数据元素中包含 adUnitId。不确定，因为这里没有发布整个清单。 Like here

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.samplemtadmob">
    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="28" />
    <application android:label="SampleMTAdmob.Android">
      <meta-data android:name="com.google.android.gms.ads.APPLICATION_ID" android:value="ca-app-pub-3940256099942544~3347511713"/>
      <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version"/>
      <activity android:name="com.google.android.gms.ads.AdActivity" android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" android:theme="@android:style/Theme.Translucent" />
    </application>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
</manifest>

还有

Important

To test the banner during the development google uses two Banner Id, one for Android > and the other for iOS. Use them then remember to replace them with your own IDs:

Android: ca-app-pub-3940256099942544/6300978111 iOS: ca-app-pub-3940256099942544/2934735716

试试这个 nuget 而不是实现渲染器 marcojak/MTAdmob

Answer 3

我在将广告更新到版本 71.1720.1 时遇到了这个问题，回滚到版本 60.1142.1 解决了这个问题，我不得不对 Xamarin.maps

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在 xamarin 中实施 admob android 抛出 Java.Lang.RuntimeException

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