android - CrashlyticsCore : Expected method missing: registerOnMeasurementEventListener

Question

我已经为 Android 设置了 Crashlytics，在 gradle 文件中添加了依赖项。我使用 Crashlytics.logException(exception); 来记录异常。在应用程序故意抛出异常以进行尝试后，Crashlytics 在 Firebase 控制台中被激活，但没有检测到任何事件，也没有出现任何日志，因此控制台显示 0 次崩溃。同时 LogCat 显示如下:

I/CrashlyticsCore: Initializing Crashlytics 2.6.1.23
I/CrashlyticsInitProvider: CrashlyticsInitProvider initialization successful
W/CrashlyticsCore: Expected method missing: registerOnMeasurementEventListener
    java.lang.NoSuchMethodException: parameter type is null
        at java.lang.Class.getMethod(Class.java:656)
        at java.lang.Class.getDeclaredMethod(Class.java:626)
        at com.crashlytics.android.core.DefaultAppMeasurementEventListenerRegistrar.invoke(DefaultAppMeasurementEventListenerRegistrar.java:89)
        at com.crashlytics.android.core.DefaultAppMeasurementEventListenerRegistrar.register(DefaultAppMeasurementEventListenerRegistrar.java:54)
        at com.crashlytics.android.core.CrashlyticsController.registerAnalyticsEventListener(CrashlyticsController.java:1574)
        at com.crashlytics.android.core.CrashlyticsCore.doInBackground(CrashlyticsCore.java:320)
        at com.crashlytics.android.core.CrashlyticsCore.doInBackground(CrashlyticsCore.java:44)
        at io.fabric.sdk.android.InitializationTask.doInBackground(InitializationTask.java:63)
        at io.fabric.sdk.android.InitializationTask.doInBackground(InitializationTask.java:28)
        at io.fabric.sdk.android.services.concurrency.AsyncTask$2.call(AsyncTask.java:311)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)
I/CrashlyticsCore: Crashlytics report upload complete: 5ABA789603A5-0001-7C52-7AF6D12C00C8

为什么缺少registerOnMeasurementEventListener方法；我只有一个默认的 proguard-rules.pro 文件，其中包含以下内容:

更新:

-assumenosideeffects class android.util.Log {
    public static int d(...);
}

############ Crashlytics ################################
-keepattributes *Annotation*
-keepattributes SourceFile,LineNumberTable
-keep public class * extends java.lang.Exception
-keep class com.crashlytics.** { *; }
-dontwarn com.crashlytics.**

Answer 1

扩展之前几个人已经说过的话，将这个添加到你的proguard.cfg中就足够了:

-keep class com.google.android.gms.measurement.AppMeasurement { *; }
-keep class com.google.android.gms.measurement.AppMeasurement$OnEventListener { *; }

这是必要的唯一原因是 Fabric 通过反射引用这两个类，而 proguard 没有检测到。