ParseInstallation.SaveAsync() вызывает UnhandledException на форматах Xamarin Android

Я пишу приложение андроида форм Xamarin и внедряю push-уведомления для него. Я получаю метод ниже упомянутого стека, трассировку при вызове ParseInstallation.SaveAsync() в Android:ParseInstallation.SaveAsync() вызывает UnhandledException на форматах Xamarin Android

[MonoDroid] UNHANDLED EXCEPTION: 
[MonoDroid] System.AggregateException: One or more errors occurred. ---> System.FormatException: String was not recognized as a valid DateTime. 
[MonoDroid] at System.DateTimeParse.ParseExact (System.String s, System.String format, System.Globalization.DateTimeFormatInfo dtfi, DateTimeStyles style) [0x00027] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/globalization/datetimeparse.cs:57 
[MonoDroid] at System.DateTime.ParseExact (System.String s, System.String format, IFormatProvider provider) [0x00000] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/datetime.cs:1083 
[MonoDroid] at Parse.ParseClient.ParseDate (System.String input) [0x0000b] in :0 
[MonoDroid] at Parse.ParseObject.MergeMagicFields (IDictionary 

2 data) [0x000a4] in <filename unknown>:0 
[MonoDroid] at Parse.ParseObject.MergeFromServer (IDictionary 

2 data) [0x0001a] in :0 
[MonoDroid] at Parse.ParseObject.MergeAfterSave (IDictionary 

2 result) [0x0003a] in <filename unknown>:0 
[MonoDroid] at Parse.ParseObject+<>c__DisplayClass2a.<SaveAsync>b__26 (System.Threading.Tasks.Task 

1 t) [0x0004c] in :0 
[MonoDroid] at System.Threading.Tasks.ContinuationResultTaskFromResultTask2[System.Tuple2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary2[System.String,System.Object]],System.Threading.Tasks.Task1[System.Tuple2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary2[System.String,System.Object]]]].InnerInvoke() [0x00027] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/TaskContinuation.cs:207 
[MonoDroid] at System.Threading.Tasks.Task.Execute() [0x00016] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:2523 
[MonoDroid] --- End of stack trace from previous location where exception was thrown --- 
[MonoDroid] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/2058/58099c53/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61 
[MonoDroid] at Parse.Internal.InternalExtensions+<>c__DisplayClass7 

1[System.Object].<OnSuccess>b__6 (System.Threading.Tasks.Task t) [0x00033] in <filename unknown>:0 
[MonoDroid] at System.Threading.Tasks.ContinuationResultTaskFromTask 

1[System.Threading.Tasks.Task 

1[System.Object]].InnerInvoke() [0x00027] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/TaskContinuation.cs:111 
[MonoDroid] at System.Threading.Tasks.Task.Execute() [0x00016] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:2523 
[MonoDroid] --- End of inner exception stack trace --- 
[MonoDroid] at System.Threading.Tasks.Task.ThrowIfExceptional (bool) [0x00014] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:2168 
[MonoDroid] at System.Threading.Tasks.Task.Wait (int,System.Threading.CancellationToken) [0x00052] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:3218 
[MonoDroid] at System.Threading.Tasks.Task.Wait (int) [0x00000] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:3159 
[MonoDroid] at Parse.ParsePushService.OnHandleIntent (Android.Content.Intent) <IL 0x00063, 0x0033b> 
[MonoDroid] at Android.App.IntentService.n_OnHandleIntent_Landroid_content_Intent_ (intptr,intptr,intptr) [0x00011] in /Users/builder/data/lanes/2058/58099c53/source/monodroid/src/Mono.Android/platforms/android-22/src/generated/Android.App.IntentService.cs:141 
[MonoDroid] at (wrapper dynamic-method) object.4f1ee6dc-1a44-45bb-ba65-81f69a0db824 (intptr,intptr,intptr) <IL 0x00017, 0x00043> 
[MonoDroid] ---> (Inner Exception #0) System.FormatException: String was not recognized as a valid DateTime. 
[MonoDroid] at System.DateTimeParse.ParseExact (System.String s, System.String format, System.Globalization.DateTimeFormatInfo dtfi, DateTimeStyles style) [0x00027] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/globalization/datetimeparse.cs:57 
[MonoDroid] at System.DateTime.ParseExact (System.String s, System.String format, IFormatProvider provider) [0x00000] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/datetime.cs:1083 
[MonoDroid] at Parse.ParseClient.ParseDate (System.String input) [0x0000b] in <filename unknown>:0 
[MonoDroid] at Parse.ParseObject.MergeMagicFields (IDictionary 

2 data) [0x000a4] in :0 
[MonoDroid] at Parse.ParseObject.MergeFromServer (IDictionary 

2 data) [0x0001a] in <filename unknown>:0 
[MonoDroid] at Parse.ParseObject.MergeAfterSave (IDictionary 

2 result) [0x0003a] in :0 
[MonoDroid] at Parse.ParseObject+<>c__DisplayClass2a.b__26 (System.Threading.Tasks.Task 

1 t) [0x0004c] in <filename unknown>:0 
[MonoDroid] at System.Threading.Tasks.ContinuationResultTaskFromResultTask 

2[System.Tuple2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary2[System.String,System.Object]],System.Threading.Tasks.Task1[System.Tuple2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary 

2[System.String,System.Object]]]].InnerInvoke() [0x00027] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/TaskContinuation.cs:207 
[MonoDroid] at System.Threading.Tasks.Task.Execute() [0x00016] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:2523 
[MonoDroid] --- End of stack trace from previous location where exception was thrown --- 
[MonoDroid] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/2058/58099c53/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61 
[MonoDroid] at Parse.Internal.InternalExtensions+<>c__DisplayClass7 

1[System.Object].b__6 (System.Threading.Tasks.Task t) [0x00033] in :0 
[MonoDroid] at System.Threading.Tasks.ContinuationResultTaskFromTask1[System.Threading.Tasks.Task1[System.Object]].InnerInvoke() [0x00027] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/TaskContinuation.cs:111 
[MonoDroid] at System.Threading.Tasks.Task.Execute() [0x00016] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/threading/Tasks/Task.cs:2523 <---

Упоминается ниже мой код: -

var installation = ParseInstallation.CurrentInstallation; 
installation.AddUniqueToList ("channels", "RxLifeTime"); 
await installation.SaveAsync(); 

if (installation != null) { 
App.regId = System.String.IsNullOrWhiteSpace  
(installation.DeviceToken) ? "" : installation.DeviceToken; 
ParsePush.ParsePushNotificationReceived += PushNotificationReceived; 
}

Я столкнулся эту проблему, так как последние два месяца, и для меня очень важно решить эту проблему. Та же проблема сообщалось о группах Google по указанной ниже ссылке: - Same Issue Here

Также несколько раз я получаю ниже упомянутого стека, след: -

[MonoDroid] UNHANDLED EXCEPTION: 
[MonoDroid] System.NullReferenceException: Object reference not set to an instance of an object 
[MonoDroid] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000b] in /Users/builder/data/lanes/2058/58099c53/source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:61 
[MonoDroid] at System.Runtime.CompilerServices.AsyncMethodBuilderCore.m__0 (object) [0x00000] in /Users/builder/data/lanes/2058/58099c53/source/mono/external/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1006 
[MonoDroid] at Android.App.SyncContext/c__AnonStorey0.<>m__0() [0x00000] in /Users/builder/data/lanes/2058/58099c53/source/monodroid/src/Mono.Android/src/Android.App/SyncContext.cs:18 
[MonoDroid] at Java.Lang.Thread/RunnableImplementor.Run() [0x0000b] in /Users/builder/data/lanes/2058/58099c53/source/monodroid/src/Mono.Android/src/Java.Lang/Thread.cs:36 
[MonoDroid] at Java.Lang.IRunnableInvoker.n_Run (intptr,intptr) [0x00009] in /Users/builder/data/lanes/2058/58099c53/source/monodroid/src/Mono.Android/platforms/android-22/src/generated/Java.Lang.IRunnable.cs:71 
[MonoDroid] at (wrapper dynamic-method) object.853c0f2f-07e2-447e-8d30-7ae1bda0b4ef (intptr,intptr) 
[AndroidRuntime] Shutting down VM

источник

2015-09-15 Amrut

После нескольких дней исследований я нашел ответ , Мы можем использовать UnhandledExceptionRaiser, предоставленный xamarin, чтобы избежать таких непредвиденных сбоев, и это разрешило вышеупомянутую проблему. То же самое упоминается here

Упомянутый ниже код, я использую:

public class MainActivity : Activity 
{ 
protected override void OnCreate(Bundle bundle) 
{ 
    // At the end of OnCreate 
    AndroidEnvironment.UnhandledExceptionRaiser += AndroidEnvironmentUnhandledExceptionRaiser; 
} 

    private void AndroidEnvironmentUnhandledExceptionRaiser(object sender, RaiseThrowableEventArgs e) 
    { 
    // Place a breakpoint in this method to inspect e.Exception 
    e.Handled = true; 
    } 
}

источник

2015-09-23 06:25:46 Amrut

ParseInstallation.SaveAsync() вызывает UnhandledException на форматах Xamarin Android

ответ

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