Styjun

Play Store reports crashes on newest AdMob on some devices:

java.lang.NoClassDefFoundError: 
 at jq.b (com.google.android.gms.dynamite_adsdynamite@15090081@15.0.90 (100400-231259764):3)
 at jp.a (com.google.android.gms.dynamite_adsdynamite@15090081@15.0.90 (100400-231259764):3)
 at jr.a (com.google.android.gms.dynamite_adsdynamite@15090081@15.0.90 (100400-231259764):19)
 at com.google.android.gms.ads.internal.util.ar.a (com.google.android.gms.dynamite_adsdynamite@15090081@15.0.90 (100400-231259764):15)
 at iu.a (com.google.android.gms.dynamite_adsdynamite@15090081@15.0.90 (100400-231259764):20)
 at iu.run (com.google.android.gms.dynamite_adsdynamite@15090081@15.0.90 (100400-231259764):8)
Caused by: java.lang.ClassNotFoundException: 
 at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:134)
 at java.lang.ClassLoader.loadClass (ClassLoader.java:379)
 at ad.loadClass (com.google.android.gms.dynamite_dynamiteloader@15090081@15.0.90 (100400-231259764):4)
 at java.lang.ClassLoader.loadClass (ClassLoader.java:312)

I have upgraded my gradle file to use the newest targetSdkVersion 28 and newest AdMob SDK 17.2.0. But I had conflict problems with different versions of com.android.support libraries. I was able to compile properly by "forcing" com.android.support libraries in version 28.0.0. Maybe this is causing the issue? I am not doing anything fancy, just including admob, facebook, firebase, ... The same app code works without crashes for older targetSdkVersion.

Also I noticed there is the possibility to add the ads over firebase which uses different lib implementation 'com.google.firebase:firebase-ads:17.2.0' and different classes and requries different data in manifest.

Here is my gradle file:

apply plugin: 'com.android.application'

android {
 compileSdkVersion 28
 buildToolsVersion '28.0.3'
 defaultConfig 
 minSdkVersion 16
 targetSdkVersion 28
 versionCode 373
 versionName "4.0.6"
 
 buildTypes 
 release 
 minifyEnabled false
 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 
 
 flavorDimensions "tier"
 productFlavors 
 playStoreFree 
 ...
 dimension "tier"
 

repositories 
 mavenCentral()
 maven 
 url "https://maven.google.com"
 

dependencies 
 implementation fileTree(include: ['*.jar'], dir: 'libs')
 implementation project(':SliderPreference')
 implementation 'com.android.support:customtabs:28.0.0'
 implementation 'com.android.support:animated-vector-drawable:28.0.0'
 implementation 'com.android.support:cardview-v7:28.0.0'
 implementation 'com.android.support:gridlayout-v7:28.0.0'
 implementation 'com.android.support:recyclerview-v7:28.0.0'
 implementation 'com.android.support:appcompat-v7:28.0.0'
 implementation 'com.android.support:support-v4:28.0.0'
 implementation 'com.google.android.gms:play-services-ads:17.2.0'
 implementation 'com.google.android.gms:play-services-analytics:16.0.8'
 implementation 'com.google.firebase:firebase-core:16.0.8'
 implementation 'com.anjlab.android.iab.v3:library:1.0.44'
 implementation 'com.facebook.android:facebook-android-sdk:4.31.0'
 implementation 'com.android.support:recyclerview-v7:28.0.0'


apply plugin: 'com.google.gms.google-services'

In Manifest I have

<application ...
 <meta-data
 android:name="com.google.android.gms.ads.AD_MANAGER_APP"
 android:value="true"/>
...

Main activity:

InterstitialAd mInterstitialAd;

@Override
protected void onPostCreate(Bundle savedInstanceState) 
MobileAds.initialize(context, BuildConfig.AD_APP_ID);
 MobileAds.setAppMuted(true);

 mInterstitialAd = new InterstitialAd (this);
 mInterstitialAd.setAdUnitId(BuildConfig.AD_UNIT_ID);

 mInterstitialAd.setAdListener(new AdListener() 
 @Override
 public void onAdFailedToLoad(int errorCode) 
 Log.d("AD", "onAdFailedToLoad: "+String.valueOf(errorCode));
 super.onAdFailedToLoad(errorCode);
 

 @Override
 public void onAdLoaded() 
 Log.d("AD", "onAdLoaded: ");
 super.onAdLoaded();
 

 @Override
 public void onAdClosed() 
 requestNewInterstitial();
 
 );
 requestNewInterstitial();
 



private void requestNewInterstitial() 
 AdRequest adRequest = new AdRequest.Builder().build();
 mInterstitialAd.loadAd(adRequest);
 

Answer from Admob:

Thanks for reaching out to us. Our team has a fix in place for this issue. The fix should be available in the future releases of the SDK. Please keep an eye on our release history page for more updates.