Random System.ArgumentException: "jobject" should not be IntPtr.Zero

Question

We have random System.ArgumentExceptionwith Xamarin on android. It is completely random - it can occur at any time and anywhere on any platform. We registered it on 5.1, 5.0, 4.4.4.

He does not have an adequate stacktrace, he does not have a place where he was thrown, I can not catch him with anything. I think this may be somehow connected with async void, we use MVVMCross in the project and there are many methods async void Initand async void DoMvxCommand. But they are all enclosed in try-catch blocks.

I urgently need some advice on how to fix or at least find the cause of this failure. Here is the latest crash log

undefined   INFO:   ActivityManager : Displayed com.website.app/md599d9a15f782f9118e8e70c354562b227.SuccessPaymentView: +220ms
undefined   WARN:   ContextImpl : Calling a method in the system process without a qualified user: android.app.ContextImpl.sendBroadcast:1629 com.android.server.InputMethodManagerService$6.run:2728 java.lang.Thread.run:818 <bottom of call stack> <bottom of call stack>


undefined   WARN:   ActivityManager : mDVFSHelper.release()
undefined   INFO:   Timeline : Timeline: Activity_windows_visible id: ActivityRecord{1aca0d50 u0 com.website.app/md599d9a15f782f9118e8e70c354562b227.SuccessPaymentView t5672} time:169720248

undefined   INFO:   MonoDroid : UNHANDLED EXCEPTION:

undefined   INFO:   MonoDroid : System.ArgumentException: 'jobject' must not be IntPtr.Zero.
undefined   INFO:   MonoDroid : Parameter name: jobject
undefined   INFO:   MonoDroid : at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x00028>
undefined   INFO:   MonoDroid : at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>m__0 (object) <0x0003f>
undefined   INFO:   MonoDroid : at Android.App.SyncContext/<Post>c__AnonStorey0.<>m__0 () <0x00027>
undefined   INFO:   MonoDroid : at Java.Lang.Thread/RunnableImplementor.Run () <0x0003f>
undefined   INFO:   MonoDroid : at Java.Lang.IRunnableInvoker.n_Run (intptr,intptr) <0x0003b>
undefined   INFO:   MonoDroid : at (wrapper dynamic-method) object.81971695-c4eb-4dd7-9e27-0dec45822877 (intptr,intptr) <0x0003b>
undefined   DEBUG:  LockPatternUtilsCache : getCarrierLockPlusMode()
undefined   DEBUG:  LockPatternUtilsCache : value : false
undefined   WARN:   Xamarin.Insights : Warning: Unhandled exception: System.ArgumentException: 'jobject' must not be IntPtr.Zero.
undefined   WARN:   Xamarin.Insights : Parameter name: jobject
undefined   WARN:   Xamarin.Insights : at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x00028>
undefined   WARN:   Xamarin.Insights : at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>m__0 (object) <0x0003f>
undefined   WARN:   Xamarin.Insights : at Android.App.SyncContext/<Post>c__AnonStorey0.<>m__0 () <0x00027>
undefined   WARN:   Xamarin.Insights : at Java.Lang.Thread/RunnableImplementor.Run () <0x0003f>
undefined   WARN:   Xamarin.Insights : at Java.Lang.IRunnableInvoker.n_Run (intptr,intptr) <0x0003b>
undefined   WARN:   Xamarin.Insights : at (wrapper dynamic-method) object.81971695-c4eb-4dd7-9e27-0dec45822877 (intptr,intptr) <0x0003b>

undefined   WARN:   art : JNI RegisterNativeMethods: attempt to register 0 native methods for md52ce486a14f4bcd95899665e9d932190b.JavaProxyThrowable
undefined   DEBUG:  AndroidRuntime : Shutting down VM
undefined   WARN:   System.err : java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
undefined   WARN:   System.err : at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
undefined   WARN:   System.err : Caused by: java.lang.reflect.InvocationTargetException
undefined   WARN:   System.err : at java.lang.reflect.Method.invoke(Native Method)
undefined   WARN:   System.err : at java.lang.reflect.Method.invoke(Method.java:372)
undefined   WARN:   System.err : at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
undefined   WARN:   System.err : ... 1 more
undefined   WARN:   System.err : Caused by: md52ce486a14f4bcd95899665e9d932190b.JavaProxyThrowable: System.ArgumentException: 'jobject' must not be IntPtr.Zero.
undefined   WARN:   System.err : Parameter name: jobject
undefined   WARN:   System.err : at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x00028>
undefined   WARN:   System.err : at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>m__0 (object) <0x0003f>
undefined   WARN:   System.err : at Android.App.SyncContext/<Post>c__AnonStorey0.<>m__0 () <0x00027>
undefined   WARN:   System.err : at Java.Lang.Thread/RunnableImplementor.Run () <0x0003f>
undefined   WARN:   System.err : at Java.Lang.IRunnableInvoker.n_Run (intptr,intptr) <0x0003b>
undefined   WARN:   System.err : at (wrapper dynamic-method) object.81971695-c4eb-4dd7-9e27-0dec45822877 (intptr,intptr) <0x0003b>
undefined   WARN:   System.err : at mono.java.lang.RunnableImplementor.n_run(Native Method)
undefined   WARN:   System.err : at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:29)
undefined   WARN:   System.err : at android.os.Handler.handleCallback(Handler.java:739)
undefined   WARN:   System.err : at android.os.Handler.dispatchMessage(Handler.java:95)
undefined   WARN:   System.err : at android.os.Looper.loop(Looper.java:145)
undefined   WARN:   System.err : at android.app.ActivityThread.main(ActivityThread.java:5832)
undefined   WARN:   System.err : ... 4 more
undefined   WARN:   FlurryAgent : Error logged: uncaught
undefined   WARN:   FlurryAgent : Flurry session ended
undefined   ERROR:  AndroidRuntime : FATAL EXCEPTION: main
undefined   ERROR:  AndroidRuntime : Process: com.website.app, PID: 27622
undefined   ERROR:  AndroidRuntime : java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
undefined   ERROR:  AndroidRuntime : at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
undefined   ERROR:  AndroidRuntime : Caused by: java.lang.reflect.InvocationTargetException
undefined   ERROR:  AndroidRuntime : at java.lang.reflect.Method.invoke(Native Method)
undefined   ERROR:  AndroidRuntime : at java.lang.reflect.Method.invoke(Method.java:372)
undefined   ERROR:  AndroidRuntime : at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
undefined   ERROR:  AndroidRuntime : ... 1 more
undefined   ERROR:  AndroidRuntime : Caused by: md52ce486a14f4bcd95899665e9d932190b.JavaProxyThrowable: System.ArgumentException: 'jobject' must not be IntPtr.Zero.
undefined   ERROR:  AndroidRuntime : Parameter name: jobject
undefined   ERROR:  AndroidRuntime : at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x00028>
undefined   ERROR:  AndroidRuntime : at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>m__0 (object) <0x0003f>
undefined   ERROR:  AndroidRuntime : at Android.App.SyncContext/<Post>c__AnonStorey0.<>m__0 () <0x00027>
undefined   ERROR:  AndroidRuntime : at Java.Lang.Thread/RunnableImplementor.Run () <0x0003f>
undefined   ERROR:  AndroidRuntime : at Java.Lang.IRunnableInvoker.n_Run (intptr,intptr) <0x0003b>
undefined   ERROR:  AndroidRuntime : at (wrapper dynamic-method) object.81971695-c4eb-4dd7-9e27-0dec45822877 (intptr,intptr) <0x0003b>
undefined   ERROR:  AndroidRuntime : at mono.java.lang.RunnableImplementor.n_run(Native Method)
undefined   ERROR:  AndroidRuntime : at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:29)
undefined   ERROR:  AndroidRuntime : at android.os.Handler.handleCallback(Handler.java:739)
undefined   ERROR:  AndroidRuntime : at android.os.Handler.dispatchMessage(Handler.java:95)
undefined   ERROR:  AndroidRuntime : at android.os.Looper.loop(Looper.java:145)
undefined   ERROR:  AndroidRuntime : at android.app.ActivityThread.main(ActivityThread.java:5832)
undefined   ERROR:  AndroidRuntime : ... 4 more
undefined   WARN:   ActivityManager : Force finishing activity com.website.app/md599d9a15f782f9118e8e70c354562b227.SuccessPaymentView

undefined   DEBUG:  PowerManagerService : [input device light] setInputDeviceLightOn is called : 1
undefined   WARN:   ActivityManager : Force finishing activity com.website.app/md599d9a15f782f9118e8e70c354562b227.PaymentFormView
undefined   INFO:   SQLiteSecureOpenHelper : getWritableDatabase(pwd)
undefined   INFO:   SQLiteSecureOpenHelper : getDatabaseLocked(b,b,pwd)...

undefined   INFO:   dumpstate : begin

undefined   DEBUG:  StatusBarManagerService : manageDisableList userId=0 what=0x0 pkg=WindowManager.LayoutParams

undefined   INFO:   SurfaceFlinger : id=3018 createSurf (49x49),1 flag=4, Application Error: com.website.app

undefined   DEBUG:  CrashAnrDetector : processName: com.website.app
undefined   DEBUG:  CrashAnrDetector : broadcastEvent : com.website.app data_app_crash
undefined   INFO:   SQLiteSecureOpenHelper : getWritableDatabase(pwd)
undefined   INFO:   SQLiteSecureOpenHelper : getDatabaseLocked(b,b,pwd)...

undefined   WARN:   ContextImpl : Calling a method in the system process without a qualified user: android.app.ContextImpl.sendBroadcast:1643 com.android.server.analytics.data.collection.application.CrashAnrDetector.broadcastEvent:296 com.android.server.analytics.data.collection.application.CrashAnrDetector.processDropBoxEntry:254 com.android.server.analytics.data.collection.application.CrashAnrDetector.access$100:60 com.android.server.analytics.data.collection.application.CrashAnrDetector$1.onReceive:102

undefined   INFO:   WifiStateMachine : CMD_RSSI_POLL : calculateWifiScore in!
undefined   INFO:   WifiStateMachine : CMD_RSSI_POLL : calculateWifiScore out!
undefined   INFO:   WifiStateMachine : CMD_RSSI_POLL : out!

undefined   ERROR:  android.os.Debug : !@Dumpstate > sdumpstate -k -t -z -d -o /data/log/dumpstate_app_error

Answer 1

Android, NullRefenceException, , ( , /), , StackTrace . . .

, , , :

• Visual Studio, / . . Visual Studio → Debug → Exceptions... ( Ctrl + Alt + E)

, , " Runtime" → "" → , "" "System.ArgumentException". , , , . , , , .

2. Android, UnhandledExceptionRaiser, , , . ( MainActivity.cs.

:

AndroidEnvironment.UnhandledExceptionRaiser += (sender, args) => {
    args.Handled = false;
};

args.Handled , - .

3. , , , , , , , captured_traces.

, base , System.Exception. ( , ):

System.Exception → Non-public members → captured_traces → [0], , → Non-public members → frames → [0] , → Non-public members → , , , fileName 'lineNumber' (, ).

, - , . - , , !