MvxDuplicateAppStartViewModel

Sample project showing that the first viewmodel ist created twice on android.

Reproduce

Start the App on Android. The first view will show how many times the viewmodel was instantiated.

Or

Set a breakpoint in the MainViewModel constructor.

Stacktrace

The first viewmodel will be created by the Activity#OnCreate

MvvmCross.IoC.MvxIoCProvider.IoCConstruct(System.RuntimeType type = {DuplicateAppStartViewModel.Core.MainViewModel}) in C:/projects/mvvmcross/MvvmCross/IoC/MvxIoCProvider.cs:148
MvvmCross.ViewModels.MvxDefaultViewModelLocator.Load(System.RuntimeType viewModelType = {DuplicateAppStartViewModel.Core.MainViewModel}, MvvmCross.ViewModels.MvxBundle parameterValues = {MvvmCross.ViewModels.MvxBundle}, MvvmCross.ViewModels.IMvxBundle savedState = (null), MvvmCross.Navigation.EventArguments.IMvxNavigateEventArgs navigationArgs = (null)) in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxDefaultViewModelLocator.cs:56
MvvmCross.ViewModels.MvxViewModelLoader.LoadViewModel(MvvmCross.ViewModels.MvxViewModelRequest request = {MvvmCross.ViewModels.MvxViewModelRequest}, MvvmCross.ViewModels.IMvxBundle savedState = (null), MvvmCross.Navigation.EventArguments.IMvxNavigateEventArgs navigationArgs = (null)) in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxViewModelLoader.cs:73
MvvmCross.Platforms.Android.Views.MvxAndroidViewsContainer.DirectLoad(MvvmCross.ViewModels.IMvxBundle savedState = (null), System.RuntimeType viewModelTypeHint = {DuplicateAppStartViewModel.Core.MainViewModel}) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxAndroidViewsContainer.cs:81
MvvmCross.Platforms.Android.Views.MvxAndroidViewsContainer.Load(Android.Content.Intent intent = {Intent { flg=0x10000000 cmp=eu.salt_and_pepper.DuplicateAppStartViewModel/md5745b08b8216c6d4cdf243b8c8024ded8.MainActivity }}, MvvmCross.ViewModels.IMvxBundle savedState = (null), System.RuntimeType viewModelTypeHint = {DuplicateAppStartViewModel.Core.MainViewModel}) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxAndroidViewsContainer.cs:52
MvvmCross.Platforms.Android.Views.MvxActivityViewExtensions.LoadViewModel(DuplicateAppStartViewModel.Droid.MainActivity androidView = {md5745b08b8216c6d4cdf243b8c8024ded8.MainActivity@1c1b20a}, MvvmCross.ViewModels.IMvxBundle savedState = (null)) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivityViewExtensions.cs:139
MvvmCross.Platforms.Android.Views.MvxActivityViewExtensions.() in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivityViewExtensions.cs:47
MvvmCross.Views.MvxViewExtensions.OnViewCreate(DuplicateAppStartViewModel.Droid.MainActivity view = {md5745b08b8216c6d4cdf243b8c8024ded8.MainActivity@1c1b20a}, System.Func<MvvmCross.ViewModels.IMvxViewModel> viewModelLoader = {System.Func<MvvmCross.ViewModels.IMvxViewModel>}) in C:/projects/mvvmcross/MvvmCross/Views/MvxViewExtensions.cs:24
MvvmCross.Platforms.Android.Views.MvxActivityViewExtensions.OnViewCreate(DuplicateAppStartViewModel.Droid.MainActivity androidView = {md5745b08b8216c6d4cdf243b8c8024ded8.MainActivity@1c1b20a}, Android.OS.Bundle bundle = (null)) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivityViewExtensions.cs:47
MvvmCross.Platforms.Android.Views.MvxActivityAdapter.EventSourceOnCreateCalled(DuplicateAppStartViewModel.Droid.MainActivity sender = {md5745b08b8216c6d4cdf243b8c8024ded8.MainActivity@1c1b20a}, MvvmCross.Base.MvxValueEventArgs<Android.OS.Bundle> eventArgs = {MvvmCross.Base.MvxValueEventArgs<Android.OS.Bundle>}) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivityAdapter.cs:76
MvvmCross.Base.MvxDelegateExtensions.Raise<Android.OS.Bundle>(System.EventHandler<MvvmCross.Base.MvxValueEventArgs<Android.OS.Bundle>> eventHandler = {System.EventHandler<MvvmCross.Base.MvxValueEventArgs<Android.OS.Bundle>>}, DuplicateAppStartViewModel.Droid.MainActivity sender = {md5745b08b8216c6d4cdf243b8c8024ded8.MainActivity@1c1b20a}, Android.OS.Bundle value = (null)) in C:/projects/mvvmcross/MvvmCross/Base/MvxDelegateExtensions.cs:18
MvvmCross.Platforms.Android.Views.Base.MvxEventSourceActivity.OnCreate(Android.OS.Bundle bundle = (null)) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/Base/MvxEventSourceActivity.cs:32
MvvmCross.Platforms.Android.Views.MvxActivity.OnCreate(Android.OS.Bundle bundle = (null)) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivity.cs:115
DuplicateAppStartViewModel.Droid.MainActivity.OnCreate(Android.OS.Bundle bundle = (null)) in

The second viewmodel will be created by the navigation service

MvvmCross.IoC.MvxIoCContainer.IoCConstruct(System.RuntimeType type = {DuplicateAppStartViewModel.Core.MainViewModel}, System.Reflection.MonoCMethod constructor = {Void .ctor()}, object[] arguments = {object[0]}) in C:/projects/mvvmcross/MvvmCross/IoC/MvxIoCContainer.cs:422
MvvmCross.IoC.MvxIoCContainer.IoCConstruct(System.RuntimeType type = {DuplicateAppStartViewModel.Core.MainViewModel}, System.Collections.Generic.IDictionary<string,object> arguments = (null)) in C:/projects/mvvmcross/MvvmCross/IoC/MvxIoCContainer.cs:414
MvvmCross.IoC.MvxIoCContainer.IoCConstruct(System.RuntimeType type = {DuplicateAppStartViewModel.Core.MainViewModel}) in C:/projects/mvvmcross/MvvmCross/IoC/MvxIoCContainer.cs:362
MvvmCross.IoC.MvxIoCProvider.IoCConstruct(System.RuntimeType type = {DuplicateAppStartViewModel.Core.MainViewModel}) in C:/projects/mvvmcross/MvvmCross/IoC/MvxIoCProvider.cs:148
MvvmCross.ViewModels.MvxDefaultViewModelLocator.Load(System.RuntimeType viewModelType = {DuplicateAppStartViewModel.Core.MainViewModel}, MvvmCross.ViewModels.MvxBundle parameterValues = {MvvmCross.ViewModels.MvxBundle}, MvvmCross.ViewModels.IMvxBundle savedState = (null), MvvmCross.Navigation.EventArguments.IMvxNavigateEventArgs navigationArgs = (null)) in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxDefaultViewModelLocator.cs:56
MvvmCross.ViewModels.MvxViewModelLoader.LoadViewModel(MvvmCross.ViewModels.MvxViewModelInstanceRequest request = {MvvmCross.ViewModels.MvxViewModelInstanceRequest}, MvvmCross.ViewModels.IMvxBundle savedState = (null), MvvmCross.Navigation.EventArguments.IMvxNavigateEventArgs navigationArgs = (null)) in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxViewModelLoader.cs:73
MvvmCross.Navigation.MvxNavigationService.Navigate() in C:/projects/mvvmcross/MvvmCross/Navigation/MvxNavigationService.cs:394
System.Runtime.CompilerServices.AsyncTaskMethodBuilder<bool>.Start<MvvmCross.Navigation.MvxNavigationService.<Navigate>d__53>(MvvmCross.Navigation.MvxNavigationService stateMachine = {MvvmCross.Navigation.MvxNavigationService}) in 
MvvmCross.Navigation.MvxNavigationService.Navigate(System.RuntimeType viewModelType = {DuplicateAppStartViewModel.Core.MainViewModel}, MvvmCross.ViewModels.IMvxBundle presentationBundle = (null), System.Threading.CancellationToken cancellationToken = IsCancellationRequested = False) in 
MvvmCross.Navigation.MvxNavigationService.Navigate<DuplicateAppStartViewModel.Core.MainViewModel>(MvvmCross.ViewModels.IMvxBundle presentationBundle = (null), System.Threading.CancellationToken cancellationToken = IsCancellationRequested = False) in C:/projects/mvvmcross/MvvmCross/Navigation/MvxNavigationService.cs:432
MvvmCross.ViewModels.MvxAppStart<DuplicateAppStartViewModel.Core.MainViewModel>.NavigateToFirstViewModel() in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxAppStart.cs:79
System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start<MvvmCross.ViewModels.MvxAppStart<DuplicateAppStartViewModel.Core.MainViewModel>.<NavigateToFirstViewModel>d__1>(MvvmCross.ViewModels.MvxAppStart`1 stateMachine = {MvvmCross.ViewModels.MvxAppStart`1}) in 
MvvmCross.ViewModels.MvxAppStart<DuplicateAppStartViewModel.Core.MainViewModel>.NavigateToFirstViewModel(object hint = (null)) in 
MvvmCross.ViewModels.MvxAppStart.StartAsync() in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxAppStart.cs:43
System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start<MvvmCross.ViewModels.MvxAppStart.<StartAsync>d__5>(MvvmCross.ViewModels.MvxAppStart stateMachine = {MvvmCross.ViewModels.MvxAppStart}) in 
MvvmCross.ViewModels.MvxAppStart.StartAsync(object hint = (null)) in 
MvvmCross.ViewModels.MvxAppStart.Start(object hint = (null)) in C:/projects/mvvmcross/MvvmCross/ViewModels/MvxAppStart.cs:28
MvvmCross.Platforms.Android.Views.MvxActivity.RunAppStart(Android.OS.Bundle bundle = (null)) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivity.cs:128
MvvmCross.Platforms.Android.Views.MvxActivity.OnCreate(Android.OS.Bundle bundle = (null)) in C:/projects/mvvmcross/MvvmCross/Platforms/Android/Views/MvxActivity.cs:120