Xamarin.Forms - 'Unable to get provider com.google.android.gms.ads.MobileAdsInitProvider: java.lang.IllegalStateException:

Question

Hey!

I have an app in Xamarin.Forms (Android & iOS), but this only concerns the Android part.

I want to add Google ads to my app, but I get an error which I cannot place. I'm using this tutorial: https://www.c-sharpcorner.com/article/google-admob-display-ads-in-xamarin-forms/

As soon I deploy the app on my physical device, the app starts but after a few seconds it crashes because of this error:

Does someone know the solution for this issue?

Answer 1

Hello,

Welcome to our Microsoft Q&A platform!

From this article Update your AndroidManifest.xml, add your application ID to your app's AndroidManifest.xml file by adding a <meta-data> tag with android:name="com.google.android.gms.ads.APPLICATION_ID", as shown below.

<application android:label="googleads.Android" android:theme="@style/MainTheme">  
    <meta-data  
             android:name="com.google.android.gms.ads.APPLICATION_ID"  
             android:value="ca-app-pub-3729926965359663~5196436184"/>  
    <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>  

Update:
Install MarcTron.Admob firstly, then using test ad unit Id to test admob ads.

 <controls:MTAdView x:Name="myAds" AdsId="{OnPlatform Android='ca-app-pub-3940256099942544/6300978111', iOS='ca-app-pub-3940256099942544/2934735716'}" />  

If the Banners don't appear in your app, probably it's a size problem. To solve it, add this style in your ContentPage.Resources or app.xaml:

<ContentPage.Resources>  
        <Style TargetType="controls:MTAdView">  
            <Setter Property="HeightRequest">  
                <Setter.Value>  
                    <x:OnIdiom Phone="50" Tablet="90" />  
                </Setter.Value>  
            </Setter>  
        </Style>  
    </ContentPage.Resources>  

more detailed note that you can take a look:
https://stackoverflow.com/questions/60470603/why-admob-doesnt-appear-in-xamarin-forms

Best Regards,
Cherry Bu
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