NativeExpressAdView - Failed to load ad: 0

I use NativeExpressAdView but I can’t get ad within this warning:

06-15 09:47:32.557 13810-14512/com.bangdev.wifichua W/Ads: There was a problem getting an ad response. ErrorCode: 0 06-15 09:47:32.557 13810-13810/com.bangdev.wifichua W/Ads: Failed to load ad: 0

This is my ad layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:ads="http://schemas.android.com/apk/res-auto"
              xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="vertical">

    <com.google.android.gms.ads.NativeExpressAdView
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:adSize="SMART_BANNER"
        ads:adUnitId="ca-app-pub-4793975677981221/2700177593"/>
</LinearLayout>

Load ad in my code:

final NativeExpressAdView adView = (NativeExpressAdView) view.findViewById(R.id.adView); adView.loadAd(new AdRequest.Builder().build());

Google play service version: 9.0.2

[ericleich]

With Native Ads Express, your NativeExpressAdView size needs to fit in the range of sizes you picked in the AdMob Front-end. In this case, Smart banner is not big enough.

See the Choosing a Size section in the docs for what the ranges are for the Native Ads Express templates. Now see how the sizing of Smart Banners works, since you chose SMART_BANNER as your size.

Let’s say you’re running this app on a Nexus 5 in portrait. The smart banner will be sized at 360x50. When you compare that against the requirements for the Native Ads Express templates, you’ll see that even the Small template requires a height of 80dp. Because your size doesn’t fit the requirements, you won’t ever see an ad.

Try changing the size to ads:adSize="300x250". That size fits all 3 templates, and so you should get an ad back. I just tested it myself and it worked for your ad unit. For more precise measurements, double check which size you picked on the AdMob front-end, and make sure the width and height of your ad fits within the ranges.

We’ll investigate more internally why the error code indicates internal error. This could be surfaced a bit better. However, I’m going to close this issue though for the reasons mentioned above.

[kmansoft]

Re: Try changing the size to ads:adSize=“300x250”.

Is there a list of supported ad sizes somewhere?

Is it true (seems to be) that the “test unit id” suggested in the documentation – “ca-app-pub-3940256099942544/2177258514” – only supports the larger sizes (e.g. 300x250, 360x320)?

If so (about the test unit id), then there is no good way to test “small” sized native ads – since developers are not supposed to not only click on ads, but also even display them on their own devices?

Re: We’ll investigate more internally why the error code indicates internal error.

Still getting this in firebase-ads:11.0.1 - comes back with “Error 0”, which does not seem helpful.

Any chance for a proper error message?