活动onCreate中的java.util.ConcurrentModificationException

在最近的发布中，我通过Admob广告中介添加了MoPub，我在崩溃日志中看到了一堆ConcurrentModificationException。所有这些似乎都是本机代码，我使用的是与广告相关的所有最新版本以及与Google / android相关的库的最新版本。有人碰过这个吗？

java.lang.RuntimeException: 
  at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3121)
  at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:3264)
  at android.app.servertransaction.LaunchActivityItem.execute (LaunchActivityItem.java:78)
  at android.app.servertransaction.TransactionExecutor.executeCallbacks (TransactionExecutor.java:108)
  at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:68)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1955)
  at android.os.Handler.dispatchMessage (Handler.java:106)
  at android.os.Looper.loop (Looper.java:214)
  at android.app.ActivityThread.main (ActivityThread.java:7078)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:494)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:964)
Caused by: java.util.ConcurrentModificationException: 
  at androidx.c.g.put (SimpleArrayMap.java:482)
  at com.google.android.gms.measurement.internal.hs.a
  at com.google.android.gms.measurement.internal.hi.onActivityCreated
  at android.app.Application.dispatchActivityCreated (Application.java:245)
  at android.app.Activity.onCreate (Activity.java:1108)
  at androidx.core.app.e.onCreate (ComponentActivity.java:81)
  at androidx.activity.b.onCreate (ComponentActivity.java:149)
  at androidx.fragment.app.c.onCreate (FragmentActivity.java:313)
  at androidx.appcompat.app.e.onCreate (AppCompatActivity.java:106)
  at com.teamtol.livedota.BaseActivity.onCreate (BaseActivity.java:21)
  at com.teamtol.livedota.RecentGameActivity.onCreate (RecentGameActivity.java:70)
  at android.app.Activity.performCreate (Activity.java:7327)
  at android.app.Activity.performCreate (Activity.java:7318)
  at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1275)
  at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3101)

这是直到BaseActivity第21行的代码：

protected void onCreate(Bundle savedInstanceState) {
        supportRequestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
        super.onCreate(savedInstanceState);

这是代码，直到最近的最近70行

public class RecentGameActivity extends BaseActivity implements AdapterView.OnItemSelectedListener {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

就我们而言，我们只会看到崩溃

com.google.firebase:firebase-analytics:17.2.2 

恢复到17.2.1已解决了该问题

如果您使用的是firebase-core：17.2.2，也会发生这种情况，因为firebase-analytics是改名的同一库。考虑到根据官方文档，不推荐使用firebase-core的当前用法-> https://firebase.google.com/support/release-notes/android#latest_sdk_versions

将您的Firebase Core库还原为：

implementation 'com.google.firebase:firebase-core:17.1.0'

我在v17.2.1和v17.2.2上都看到过崩溃，但是自从恢复到17.1.0以来，一切都很好。

我在这里报告了该错误：https：//firebase.google.com/support/troubleshooter/report/bugs

更新资料

感谢@Sébastien，还原到v17.2.0也应该可以：

implementation 'com.google.firebase:firebase-core:17.2.0'

最终在17.2.3中修复：https : //firebase.google.com/support/release-notes/android#analytics_v17-2-3

我们已经找到了问题，并且正在为下一版本的SDK进行修复。

我们最近遇到了类似的问题。用于Admob中介的Unity Ads适配器错误。

这是我们的build.gradle文件：

implementation 'com.google.android.gms:play-services-ads:19.1.0'
implementation 'com.google.ads.mediation:unity:3.4.2.1'
implementation 'com.google.ads.mediation:vungle:6.5.3.0'
implementation 'com.google.ads.mediation:chartboost:7.5.0.0'
implementation 'com.google.ads.mediation:mytarget:5.6.3.0'
implementation 'com.yandex.android:mobmetricalib:3.13.1'
implementation 'com.yandex.android:mobileads:2.142'
implementation 'com.yandex.ads.adapter:admob-mobileads:0.3.0'

implementation 'com.google.android.gms:play-services-games:19.0.0'
implementation 'com.google.android.gms:play-services-auth:17.0.0'

implementation 'com.google.firebase:firebase-analytics:17.3.0'
implementation 'com.google.firebase:firebase-dynamic-links:19.1.0'
implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'

implementation 'com.google.android.play:core:1.7.2'
implementation 'androidx.multidex:multidex:2.0.1'

Google Play控制台错误：

java.util.ConcurrentModificationException: 
  at java.util.HashMap$HashIterator.nextNode (HashMap.java:1453)
  at java.util.HashMap$EntryIterator.next (HashMap.java:1487)
  at java.util.HashMap$EntryIterator.next (HashMap.java:1485)
  at com.google.ads.mediation.unity.UnitySingleton$UnitySingletonListener.onUnityAdsError (UnitySingleton.java:227)
  at com.unity3d.services.ads.configuration.AdsModuleConfiguration$3.run (AdsModuleConfiguration.java:92)
  at android.os.Handler.handleCallback (Handler.java:888)
  at android.os.Handler.dispatchMessage (Handler.java:100)
  at android.os.Looper.loop (Looper.java:213)
  at android.app.ActivityThread.main (ActivityThread.java:8178)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:513)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1101)

这个问题又与Firebase有关吗？

更新

这次的问题似乎出在UnityAds适配器中：https : //developers.google.com/admob/android/mediation/unity#version-3.4.2.2