Xamarin PCL IllegalStateException lorsque vous appuyez sur le bouton Précédent pour sortir de l'application

Question

J'ai cette erreur et j'ai essayé de définir un point de rupture, mais incapable de trouver quelle partie de mon code a causé le problème. Ce problème se produira lorsque j'ai appuyé sur le bouton de retour pour sortir de l'application. La trace de pile ci-dessous n'affiche rien de mon code non plus. Est-ce que quelqu'un a déjà vu ce problème ou comment puis-je déboguer ce type de problème.

Java.Lang.IllegalStateException: Activity has been destroyed 
    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000c] in /Users/builder/data/lanes/3511/77cb8568/source/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143 
    at Java.Interop.JniEnvironment+InstanceMethods.CallIntMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniMethodInfo method) [0x00084] in /Users/builder/data/lanes/3511/ce955cc0/source/Java.Interop/src/Java.Interop/Java.Interop/JniEnvironment.g.cs:11464 
    at Android.Runtime.JNIEnv.CallIntMethod (System.IntPtr jobject, System.IntPtr jmethod) [0x00000] in /Users/builder/data/lanes/3511/ce955cc0/source/monodroid/src/Mono.Android/JNIEnv.g.cs:186 
    at Android.Support.V4.App.FragmentTransactionInvoker.CommitAllowingStateLoss() [0x00033] in <27c17fe440cf491ba8255bcefade6e02>:0 
    at Xamarin.Forms.Platform.Android.AppCompat.MasterDetailContainer.Dispose (System.Boolean disposing) [0x00042] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Platform.Android\AppCompat\MasterDetailContainer.cs:130 
    at Java.Lang.Object.Dispose() [0x00000] in /Users/builder/data/lanes/3511/ce955cc0/source/xamarin-android/src/Mono.Android/Java.Lang/Object.cs:203 
    at Xamarin.Forms.Platform.Android.AppCompat.MasterDetailPageRenderer.Dispose (System.Boolean disposing) [0x00046] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Platform.Android\AppCompat\MasterDetailPageRenderer.cs:192 
    at Java.Lang.Object.Dispose() [0x00000] in /Users/builder/data/lanes/3511/ce955cc0/source/xamarin-android/src/Mono.Android/Java.Lang/Object.cs:203 
    at Xamarin.Forms.Platform.Android.AppCompat.Platform.SetPage (Xamarin.Forms.Page newRoot) [0x0003f] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Platform.Android\AppCompat\Platform.cs:226 
    at Xamarin.Forms.Platform.Android.AppCompat.Platform.Dispose() [0x00010] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Platform.Android\AppCompat\Platform.cs:52 
    at Xamarin.Forms.Platform.Android.FormsAppCompatActivity.OnDestroy() [0x0002f] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Platform.Android\AppCompat\FormsAppCompatActivity.cs:195 
    at Android.App.Activity.n_OnDestroy (System.IntPtr jnienv, System.IntPtr native__this) [0x00009] in /Users/builder/data/lanes/3511/ce955cc0/source/monodroid/src/Mono.Android/platforms/android-24/src/generated/Android.App.Activity.cs:2981 
    at at (wrapper dynamic-method) System.Object:3a1f2dcb-839c-41c3-88f3-3ca5ed8f0b6f (intptr,intptr) 
    at java.lang.IllegalStateException: Activity has been destroyed 
    at at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1515) 
    at at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:638) 
    at at android.support.v4.app.BackStackRecord.commitAllowingStateLoss(BackStackRecord.java:621) 
    at at md5b60ffeb829f638581ab2bb9b1a7f4f3f.FormsAppCompatActivity.n_onDestroy(Native Method) 
    at at md5b60ffeb829f638581ab2bb9b1a7f4f3f.FormsAppCompatActivity.onDestroy(FormsAppCompatActivity.java:80) 
    at at android.app.Activity.performDestroy(Activity.java:5603) 
    at at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1135) 
    at at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3670) 
    at at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3701) 
    at at android.app.ActivityThread.access$1500(ActivityThread.java:161) 
    at at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1318) 
    at at android.os.Handler.dispatchMessage(Handler.java:102) 
    at at android.os.Looper.loop(Looper.java:157) 
    at at android.app.ActivityThread.main(ActivityThread.java:5356) 
    at at java.lang.reflect.Method.invokeNative(Native Method) 
    at at java.lang.reflect.Method.invoke(Method.java:515) 
    at at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265) 
    at at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081) 
    at at dalvik.system.NativeStart.main(Native Method) 

Answer 1

Je peux confirmer cela est fixé dans Xamarin.Forms 2.3.4.221-pre6 daté 27/3/2017

Entrée: PM> Installer-Package Xamarin.Forms -Pré

Supprimer bin et obj dossiers dans vos projets, nettoyer et construire la solution.