DiskReadViolation in Firebase Performance during Activity#onResume #7340
Description
- Android Studio version: Build #IU-252.23892.409, built on August 1, 2025
- Firebase Component: Performance
- Component version: Firebase BOM
33.16.0
[REQUIRED] Step 3: Describe the problem
AppStartTrace produces strict mode DiskReadViolation through RemoteConfigComponent.
Steps to reproduce:
We observe the following error in our app:
13:27:55.677 D StrictMode policy violation; ~duration=27 ms: android.os.strictmode.DiskReadViolation
at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1666)
at android.app.SharedPreferencesImpl.awaitLoadedLocked(SharedPreferencesImpl.java:275)
at android.app.SharedPreferencesImpl.getLong(SharedPreferencesImpl.java:328)
at com.google.firebase.remoteconfig.internal.ConfigSharedPrefsClient.getFetchTimeoutInSeconds(ConfigSharedPrefsClient.java:110)
at com.google.firebase.remoteconfig.RemoteConfigComponent.getFrcBackendApiClient(RemoteConfigComponent.java:264)
at com.google.firebase.remoteconfig.RemoteConfigComponent.getFetchHandler(RemoteConfigComponent.java:280)
at com.google.firebase.remoteconfig.RemoteConfigComponent.get(RemoteConfigComponent.java:190)
at com.google.firebase.perf.config.RemoteConfigManager.isFirebaseRemoteConfigAvailable(RemoteConfigManager.java:401)
at com.google.firebase.perf.config.RemoteConfigManager.triggerRemoteConfigFetchIfNecessary(RemoteConfigManager.java:337)
at com.google.firebase.perf.config.RemoteConfigManager.getRemoteConfigValue(RemoteConfigManager.java:301)
at com.google.firebase.perf.config.RemoteConfigManager.getBoolean(RemoteConfigManager.java:213)
at com.google.firebase.perf.config.ConfigResolver.getRemoteConfigBoolean(ConfigResolver.java:880)
at com.google.firebase.perf.config.ConfigResolver.getIsExperimentTTIDEnabled(ConfigResolver.java:839)
at com.google.firebase.perf.metrics.AppStartTrace.onActivityResumed(AppStartTrace.java:355)
at android.app.Application.dispatchActivityResumed(Application.java:431)
at android.app.Activity.dispatchActivityResumed(Activity.java:1483)
at android.app.Activity.onResume(Activity.java:2065)
at androidx.fragment.app.FragmentActivity.onResume(FragmentActivity.java:309)
at com.example.MainActivity.onResume(GrokActivity.kt:220)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1603)
at android.app.Activity.performResume(Activity.java:8743)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4952)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4995)
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:57)
at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:180)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:98)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2443)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:205)
at android.os.Looper.loop(Looper.java:294)
at android.app.ActivityThread.main(ActivityThread.java:8177)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)
Relevant Code:
In your Application class add the following code:
import android.app.Application
import android.os.StrictMode
class MyApp : Application() {
override fun onCreate() {
StrictMode.setThreadPolicy(
StrictMode.ThreadPolicy.Builder()
.detectAll()
.penaltyLog()
.penaltyDeath()
.build(),
)
StrictMode.setVmPolicy(
StrictMode.VmPolicy.Builder()
.detectAll()
.penaltyLog()
.penaltyDeath()
.build()
)
super.onCreate()
}
}