Android-AdMob无法通过提供错误代码0来加载广告

Question

I've used Firebase to impelment AdMob in some of my apps,In all apps it is working fine but in 1 of the apps it is giving following error:

There was a problem getting an ad response. ErrorCode: 0 Ads: Failed to load ad: 0

I have tried many solutions from google but not gain yet, Unit-Ids are OK as well. Ads are loading in test devices but live Ads are causing the issue. I have tried by changing the package name and creating new App at AdMob but still same issue. Code piece is as following. What is the issue?

MobileAds.initialize(this, "ca-app-pub-8845338895058113~6722149984");
            adInterstial = new AdInterstial(SplashActivity.this);
            mAdView = (AdView) findViewById(R.id.adView);
            final AdRequest adRequest = new AdRequest.Builder()
                    .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
                     .addTestDevice(getString(R.string.admob_test_device))
                    .build();
            mAdView.loadAd(adRequest);

xml code

<com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        ads:adSize="BANNER"
        ads:adUnitId="@string/banner_ad_unit_id"
        android:visibility="visible"
        />

Answer 1

Its take some more time to come your ads in live.so wait for a few hours and try again.

From google Mobile Ads SDK Team answer it could be that you have only recently created a new Ad Unit ID and requesting for live ads. It could take a few hours for ads to start getting served if that is that case. If you are receiving test ads then your implementation is fine. Just wait a few hours and see if you are able to receive live ads then. If not, can send us your Ad Unit ID for us to look into.

Note : Google updated (Firebase and the Mobile Ads SDK) for mobile ads.Check you done all process from Google Mobile Ads SDK

compile 'com.google.firebase:firebase-ads:9.8.0

Answer 2

Error code 0 can be thrown because of many reasons, but mostly it will be (from my personal experience) because of the following two reasons:

1. You have just created your ad unit so it's not initialised by google till now. So wait for at least 3 to 4 hours.

2. You have not initialised admob in your android app .

    MobileAds.initialize(this, "YOUR_APP_ID"); 

so make sure to do that .