Develop Reference

java.util.concurrent.RejectedExecutionException while showing native ads

I'm showing native ads from audience network in my feed. I'm getting crash below. Anyone knows how to solve it what cause this?
Fatal Exception: java.util.concurrent.RejectedExecutionException: Task android.os.AsyncTask$3#2c45c538 rejected from java.util.concurrent.ThreadPoolExecutor#1d1c3911[Running, pool size = 9, active threads = 9, queued tasks = 128, completed tasks = 757]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2011)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:793)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1339)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:594)
at com.facebook.ads.internal.util.g.a(Unknown Source)
at com.facebook.ads.internal.e.d.a(Unknown Source)
at com.facebook.ads.internal.e.d.a(Unknown Source)
at com.facebook.ads.internal.g.g.a(Unknown Source)
at com.facebook.ads.internal.g.g.c(Unknown Source)
at com.facebook.ads.internal.util.ak.j(Unknown Source)
at com.facebook.ads.internal.util.ad$6.a(Unknown Source)
at com.facebook.ads.internal.util.ad$6.a(Unknown Source)
at com.facebook.ads.internal.g.r.b(Unknown Source)
at com.facebook.ads.internal.g.r.a(Unknown Source)
at com.facebook.ads.internal.view.o.a(Unknown Source)
at com.facebook.ads.internal.view.d.c.b.setVideoState(Unknown Source)
at com.facebook.ads.internal.view.d.c.b.onCompletion(Unknown Source)
at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:3392)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:7007)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

Your code, and the code in your libraries, are starting too many simultaneous AsyncTask instances. The default ThreadPoolExecutor has a 128-element queue, to go along with the instances that are executing. You have exceeded the capacity of this queue.

Google Cast crash on stop casting

My custom sender application is crashing whenever I'm clicking 'STOP CASTING' on the cast-options menu in the app. The error I'm getting is:
java.lang.NullPointerException: Attempt to write to field 'java.lang.ref.WeakReference android.support.v4.media.session.MediaSessionCompat$Callback.mSessionImpl' on a null object reference
at android.support.v4.media.session.MediaSessionCompat$MediaSessionImplApi21.setCallback(MediaSessionCompat.java:2305)
at android.support.v4.media.session.MediaSessionCompat.setCallback(MediaSessionCompat.java:267)
at android.support.v4.media.session.MediaSessionCompat.setCallback(MediaSessionCompat.java:255)
at com.google.android.gms.internal.zznv.zzen(Unknown Source)
at com.google.android.gms.cast.framework.CastSession.zzei(Unknown Source)
at com.google.android.gms.cast.framework.CastSession.zza(Unknown Source)
at com.google.android.gms.cast.framework.CastSession$zzb.zzei(Unknown Source)
at com.google.android.gms.cast.framework.zzf$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:387)
at zv.a(:com.google.android.gms.DynamiteModulesC:199)
at zl.a(:com.google.android.gms.DynamiteModulesC:128)
at aaa.onTransact(:com.google.android.gms.DynamiteModulesC:122)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.cast.framework.zzh$zza$zza.zzb(Unknown Source)
at com.google.android.gms.cast.framework.CastSession.end(Unknown Source)
at com.google.android.gms.cast.framework.Session$zza.end(Unknown Source)
at com.google.android.gms.cast.framework.zzq$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:387)
at abc.a(:com.google.android.gms.DynamiteModulesC:216)
at abk.a(:com.google.android.gms.DynamiteModulesC:303)
at acg.a(:com.google.android.gms.DynamiteModulesC:70)
at acg.e(:com.google.android.gms.DynamiteModulesC:38)
at acd.onTransact(:com.google.android.gms.DynamiteModulesC:126)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.internal.zznn$zza$zza.zzg(Unknown Source)
at com.google.android.gms.internal.zznq.onRouteUnselected(Unknown Source)
at android.support.v7.media.MediaRouter$Callback.onRouteUnselected(MediaRouter.java:1787)
at android.support.v7.media.MediaRouter$GlobalMediaRouter$CallbackHandler.invokeCallback(MediaRouter.java:2999)
at android.support.v7.media.MediaRouter$GlobalMediaRouter$CallbackHandler.handleMessage(MediaRouter.java:2946)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
and I can't seem to find anyone with this error. I've followed https://github.com/googlecast/CastHelloText-android/ to the point. I will post the full activity here if it's wanted.

I've found answer on google issue tracking system on https://issuetracker.google.com/issues/37129745
In short, update v7 supprt library to 25.1.1

DeadObjectException with stacktrace pointing to : android.app.ApplicationPackageManager.getPackageInstaller

I'm seeing in crash being reported in crashlytics which has this stack trace which has no mention of my app code.
I have seen DeadObjectException with com.google.android.gms and there, the crash was triggered when removing listeners.
Also, everytime my app starts, I get the installer for logging purposes, i.e.
packageManager.getInstallerPackageName(my-package-name)
There is no callback associated with this call.
Crash is observed mainly on Lollipop and Kitkat, though few Marshmallow and Nougat users have experienced it too.
Has anyone experienced something similar?
Fatal Exception: java.lang.RuntimeException: android.os.DeadObjectException
at android.app.ApplicationPackageManager.getPackageInstaller(ApplicationPackageManager.java:1632)
at com.google.android.gms.common.zze.zzl(Unknown Source)
at com.google.android.gms.common.GoogleApiAvailability.getInstance(Unknown Source:8000)
at com.google.android.gms.internal.zzpy.zzc(Unknown Source:24000)
at com.google.android.gms.internal.zzpv.begin(Unknown Source)
at com.google.android.gms.internal.zzqa.zzc(Unknown Source)
at com.google.android.gms.internal.zzpp.onConnectionSuspended(Unknown Source)
at com.google.android.gms.common.internal.zzk$1.onConnectionSuspended(Unknown Source)
at com.google.android.gms.common.internal.zzd$zzd.handleMessage(Unknown Source)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5438)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by android.os.DeadObjectException
at android.os.BinderProxy.transactNative(Binder.java)
at android.os.BinderProxy.transact(Binder.java:496)
at android.content.pm.IPackageManager$Stub$Proxy.getPackageInstaller(IPackageManager.java:4229)
at android.app.ApplicationPackageManager.getPackageInstaller(ApplicationPackageManager.java:1629)
at com.google.android.gms.common.zze.zzl(Unknown Source)
at com.google.android.gms.common.GoogleApiAvailability.getInstance(Unknown Source:8000)
at com.google.android.gms.internal.zzpy.zzc(Unknown Source:24000)
at com.google.android.gms.internal.zzpv.begin(Unknown Source)
at com.google.android.gms.internal.zzqa.zzc(Unknown Source)
at com.google.android.gms.internal.zzpp.onConnectionSuspended(Unknown Source)
at com.google.android.gms.common.internal.zzk$1.onConnectionSuspended(Unknown Source)
at com.google.android.gms.common.internal.zzd$zzd.handleMessage(Unknown Source)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5438)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)

Here are the Fabric crashlytics reason for this exception.
DeadObjectExceptions are usually a symptom of a problem occurring somewhere else (likely in a remote process). Even though this exception may be safe to catch, it's worth looking for problems in related services.
This error could mean one of two things:
1) There is a bug (which caused a crash) in an associated process.
2) The other process was killed by the OS.
Source: Fabric crashlytics report.
Resources: Here & Here

ProGuard causing Jackson error, "Conflicting property name definitions"

I am using the Nest Android SDK and am getting close to releasing my application. I have found that it is not possible to use Proguard with the Nest SDK as it stands today. Once a user is authenticated, the data that comes back causes the crash below.
How can I get passed this, and still keep ProGuard enabled? I created an issue on the github page but I assume it will not be a high priority by Nest.
09-06 23:49:32.807 15229-15229/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: <my_package>, PID: 15229
java.lang.IllegalStateException: Conflicting property name definitions: 'locale' (for [field com.nestlabs.sdk.Device#b]) vs 'name' (for [method com.nestlabs.sdk.Device#b(0 params)])
at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.findRenamed(Unknown Source)
at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.findNewName(Unknown Source)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector._renameProperties(Unknown Source)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.collect(Unknown Source)
at com.fasterxml.jackson.databind.introspect.BasicClassIntrospector.collectProperties(Unknown Source)
at com.fasterxml.jackson.databind.introspect.BasicClassIntrospector.forDeserialization(Unknown Source)
at com.fasterxml.jackson.databind.introspect.BasicClassIntrospector.forDeserialization(Unknown Source)
at com.fasterxml.jackson.databind.DeserializationConfig.introspect(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(Unknown Source)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(Unknown Source)
at com.firebase.client.d.a(Unknown Source)
at com.nestlabs.sdk.aa.a(Unknown Source)
at com.firebase.client.c.ba.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Unexplained IncompatibleClassChangeError In Stable Released App Caused by GoogleMaps

I have just received this strange crash report from a user in my Google Play Developer Console.
The app is stable at the moment and this is the first time I have seen this crash. It has been in release for 3/4 months now. The device was a Galaxy S5 running Android Version 5.0.
My initial thoughts is Google Play Services has updated causing issues. Any better offers?
java.lang.IncompatibleClassChangeError: Class 'java.lang.reflect.ArtMethod' does not implement interface 'android.os.Parcelable$Creator' in call to 'java.lang.Object android.os.Parcelable$Creator.createFromParcel(android.os.Parcel)' (declaration of 'java.lang.reflect.ArtMethod' appears in /system/framework/core-libart.jar)
at com.google.android.gms.common.internal.safeparcel.SafeParcelReader.createParcelable(SafeParcelReader.java:227)
at com.google.android.gms.maps.GoogleMapOptionsCreator.createFromParcel(GoogleMapOptionsCreator.java:93)
at com.google.android.gms.maps.internal.ICreator$Stub.onTransact(ICreator.java:74)
at android.os.Binder.transact(Binder.java:380)
at com.google.android.gms.maps.internal.ah.a(SourceFile:204)
at com.google.android.gms.maps.internal.CreatorImpl.a(SourceFile:110)
at com.google.android.gms.maps.internal.ag.onTransact(SourceFile:79)
at android.os.Binder.transact(Binder.java:380)
at com.google.android.gms.maps.internal.am.a(Unknown Source)
at com.google.android.gms.maps.l.f(Unknown Source)
at com.google.android.gms.maps.l.a(Unknown Source)
at com.google.android.gms.a.b.a(Unknown Source)
at com.google.android.gms.a.b.a(Unknown Source)
at com.google.android.gms.maps.MapView.a(Unknown Source)
at com.myapp.c.d.onActivityCreated(Unknown Source)
at android.support.v4.app.Fragment.performActivityCreated(Unknown Source)
at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
at android.support.v4.app.BackStackRecord.run(Unknown Source)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(Unknown Source)
at android.support.v4.app.FragmentActivity.onStart(Unknown Source)
at com.myapp.Activity.onStart(Unknown Source)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1234)
at android.app.Activity.performStart(Activity.java:6258)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2621)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2725)
at android.app.ActivityThread.access$900(ActivityThread.java:172)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1422)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5834)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1388)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1183)
ADDITION Have just found this thread which is about other people experiencing the same crash on Samsung devices.

This was related to issue 8314. This issue has now been fixed via both a Firmware update from Samsung and also an update to Google Play Services.
If this helped you, please mark this as the correct answer.