Error intialising 7.2.0 on android

[REQUIRED] Step 1: Describe your environment

• Unity version: 2021.3.8f1
• Google Mobile Ads Unity plugin version: 7.2.0
• Platform: Android
• Platform OS version: Android 10

[REQUIRED] Step 2: Describe the problem

Steps to reproduce:

Imported admob 7.2.0, initialised MobileAds with:

MobileAds.Initialize(initStatus => {});

I get the following errors whilst initialising via the android logcat:

2022/09/02 18:10:49.808 29845 29845 Debug Surface lockCanvas
2022/09/02 18:10:49.899 29845 29938 Info IL2CPP Locale en-GB
2022/09/02 18:10:52.681 29845 29873 Info Unity Beginning Initialization...
2022/09/02 18:10:52.681 29845 29873 Info Unity  #0 0x7e692d49 (libunity.so) ? 0x0
2022/09/02 18:10:52.681 29845 29873 Info Unity  #1 0x7e9f0cdf (libunity.so) ? 0x0
2022/09/02 18:10:52.681 29845 29873 Info Unity  #2 0x7e4bd229 (libunity.so) ? 0x0
2022/09/02 18:10:52.681 29845 29873 Info Unity  #3 0x7e4bd175 (libunity.so) ? 0x0
2022/09/02 18:10:52.681 29845 29873 Info Unity  #4 0x7d665090 (libil2cpp.so) DebugLogHandler_Internal_Log_m20852F18A88BB18425BA07260545E3968F7EA76C 0x84
2022/09/02 18:10:52.681 29845 29873 Info Unity  #5 0x7d6651b0 (libil2cpp.so) DebugLogHandler_LogFormat_m216B169EF9B669F2ED4C59F6B9F326D4EBBDF821 0x7c
2022/09/02 18:10:52.681 29845 29873 Info Unity  #6 0x7bde24d4 (libil2cpp.so) InterfaceActionInvoker4<int, Object_tC12DECB6760A7F2CBF65D9DCF18D044C2D97152C*, String_t*, ObjectU5BU5D_t8061030B0A12A55D5AD8652A20C922FE99450918*>::Invoke(unsigned short, Il2CppClass*, Il2CppObject*, int, Object_tC12DECB6760A7F2CBF65D9DCF18D044C2D97152C*, String_t*, ObjectU5BU5D_t8061030B0A12A55D5AD8652A20C922FE99450918*) 0x270
2022/09/02 18:10:52.681 29845 29873 Info Unity  #7 0x7d68816c (libil2cpp.so) Logger_Log_mEA3D39763D610E92491AA479BA653ECFEE3E9E5C 0x198
2022/09/02 18:10:52.681 29845 29873 Info Unity  #8 0x7bbb7d98 (libil2cpp.so) InterfaceActionInvoker2<int, Il2CppObject*>::Invoke(unsigned short, Il2CppClass*, Il2CppObject*, int, Il2CppObject*) 0x258
2022/09/02 18:10:52.681 29845 29873 Info Unity  #9 0x7d665534 (libil2cpp.so) Debug_Log_m87A
2022/09/02 18:10:52.783 29845 29873 Error Unity AndroidJavaException: java.lang.ClassNotFoundException: com.google.android.gms.ads.initialization.OnInitializationCompleteListener
2022/09/02 18:10:52.783 29845 29873 Error Unity java.lang.ClassNotFoundException: com.google.android.gms.ads.initialization.OnInitializationCompleteListener
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at java.lang.Class.classForName(Native Method)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at java.lang.Class.forName(Class.java:454)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at com.unity3d.player.UnityPlayer.nativeRender(Native Method)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at com.unity3d.player.UnityPlayer.access$300(Unknown Source:0)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at com.unity3d.player.UnityPlayer$e$1.handleMessage(Unknown Source:83)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at android.os.Handler.dispatchMessage(Handler.java:103)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at android.os.Looper.loop(Looper.java:214)
2022/09/02 18:10:52.783 29845 29873 Error Unity 	at com.unity3d.player.UnityPlayer$e.run(Unknown Source:20)
2022/09/02 18:10:52.783 29845 29873 Error Unity Caused by: java.lang.ClassNotFoundException: com.google.android.gms.ads.initialization.OnInitializationCompleteListener
2022/09/02 18:10:52.783 29845 29873 Error Unity 	... 8 more
2022/09/02 18:10:52.783 29845 29873 Error Unity   at UnityEngine.AndroidJNISafe.CheckException () [0x00000] in <00000000000000000000000000000000>:0 
2022/09/02 18:10:52.783 29845 29873 Error Unity   at UnityEngine.AndroidJNISafe.FindClass (System.String name) [0x00000] in <000000000000000000000

I’ve tried deleting the relevant folders (ExternalDependencies and GoogleMobileAds), as well as all the relevant files in the Plugins folder, then i’ve reimported the package and re-resolved the android dependencies to see if that would fix the issue but have no luck.

In the editor everything initialises and the test ads load, but no luck when i build and install my apk. If anyone has any ideas or gone through anything similar and could share their experiences, that’d be great!

For some more info: I’ve got my current app store id set on the Google Mobile Ads Settings too, which i can validate that it updates the android manifest with the same id. (in addition, my app is already published on the play store and i have my account validated on AdMob with the status of my app saying it’s ready if any of those make a difference. Only just switched to Admob from Unity)

[ikoukas]

You need to add a proguard-user.txt file to your project from the build settings, and add this line to it -keep,includedescriptorclasses public class com.google.** { *; } I had the same issue after 7.2.0 and it fixed it. The answer above about the class not found error gave me the clue.

[LMBooth]

Thanks @ikoukas that fix works too!