CODEWITHSUNDEEP
c#androidxamarinrealm
Segamoto
Segamoto

Reputation: 315

Realm Xamarin - Error on GetInstance()

I set my main page in this way:

namespace MyNamepage
{
public partial class MyPage: ContentPage
  {
    private Realm realm;
    public MyPage()
    {
        InitializeComponent();
        this.realm = Realm.GetInstance();
    }
  }
}

Debugging the Android project i got this error and the app crash:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.

Stack trace:

10-17 10:36:31.935 I/MonoDroid(31518): UNHANDLED EXCEPTION:
10-17 10:36:31.955 I/MonoDroid(31518): System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.PlatformNotSupportedException: The PCL build of Realm is being linked which probably means you need to use NuGet or otherwise link a platform-specific Realm.dll to your main application.
10-17 10:36:31.955 I/MonoDroid(31518):   at Realms.RealmPCLHelpers.ThrowProxyShouldNeverBeUsed () [0x00000] in <filename unknown>:0
10-17 10:36:31.955 I/MonoDroid(31518):   at Realms.Realm.GetInstance (Realms.RealmConfiguration config) [0x00000] in <filename unknown>:0
10-17 10:36:31.955 I/MonoDroid(31518):   at MyPack.SidePage.MyPage..ctor () [0x00008] in C:\Users\User\documents\visual studio 2015\Projects\MyPack\MyPack\MyPack\SidePage\MyPage.xaml.cs:14
10-17 10:36:31.955 I/MonoDroid(31518):   at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
10-17 10:36:31.955 I/MonoDroid(31518):   at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/mcs/class/corlib/System.Reflection/MonoMethod.cs:644
10-17 10:36:31.965 I/MonoDroid(31518):   --- End of inner exception stack trace ---
10-17 10:36:31.965 I/MonoDroid(31518):   at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00016] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/mcs/class/corlib/System.Reflection/MonoMethod.cs:650
10-17 10:36:31.965 I/MonoDroid(31518):   at System.RuntimeType.CreateInstanceMono (Boolean nonPublic) [0x000ca] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/mcs/class/corlib/ReferenceSources/RuntimeType.cs:115
10-17 10:36:31.965 I/MonoDroid(31518):   at System.RuntimeType.CreateInstanceSlow (Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x0001a] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/mcs/class/corlib/ReferenceSources/RuntimeType.cs:89
10-17 10:36:31.965 I/MonoDroid(31518):   at System.RuntimeType.CreateInstanceDefaultCtor (Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x0002a] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/mscorlib/system/rttype.cs:5599
10-17 10:36:31.965 I/MonoDroid(31518):   at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) [0x00040] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/mscorlib/system/activator.cs:201
10-17 10:36:31.965 I/MonoDroid(31518):   at System.Activator.CreateInstance (System.Type type) [0x00000] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/external/referencesource/mscorlib/system/activator.cs:134
10-17 10:36:31.965 I/MonoDroid(31518):   at MyPack.MainPage.OnItemSelected (System.Object sender, Xamarin.Forms.SelectedItemChangedEventArgs e) [0x00016] in C:\Users\User\documents\visual studio 2015\Projects\MyPack\MyPack\MyPack\MainPage.xaml.cs:24
10-17 10:36:31.965 I/MonoDroid(31518):   at (wrapper delegate-invoke) System.EventHandler`1[Xamarin.Forms.SelectedItemChangedEventArgs]:invoke_void_object_TEventArgs (object,Xamarin.Forms.SelectedItemChangedEventArgs)
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.ListView.OnSelectedItemChanged (Xamarin.Forms.BindableObject bindable, System.Object oldValue, System.Object newValue) [0x0001c] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.BindableObject.SetValueActual (Xamarin.Forms.BindableProperty property, Xamarin.Forms.BindablePropertyContext context, System.Object value, Boolean currentlyApplying, SetValueFlags attributes, Boolean silent) [0x0010e] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes) [0x0014b] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, SetValueFlags attributes) [0x00000] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.ListView.NotifyRowTapped (Int32 groupIndex, Int32 inGroupIndex, Xamarin.Forms.Cell cell) [0x0004c] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.ListView.NotifyRowTapped (Int32 index, Xamarin.Forms.Cell cell) [0x00023] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.Platform.Android.ListViewAdapter.HandleItemClick (Android.Widget.AdapterView parent, Android.Views.View view, Int32 position, Int64 id) [0x00056] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Xamarin.Forms.Platform.Android.CellAdapter.OnItemClick (Android.Widget.AdapterView parent, Android.Views.View view, Int32 position, Int64 id) [0x0002e] in <filename unknown>:0
10-17 10:36:31.975 I/MonoDroid(31518):   at Android.Widget.AdapterView+IOnItemClickListenerInvoker.n_OnItemClick_Landroid_widget_AdapterView_Landroid_view_View_IJ (IntPtr jnienv, IntPtr native__this, IntPtr native_parent, IntPtr native_view, Int32 position, Int64 id) [0x00019] in /Users/builder/data/lanes/3415/7db2aac3/source/monodroid/src/Mono.Android/platforms/android-23/src/generated/Android.Widget.AdapterView.cs:215
10-17 10:36:31.975 I/MonoDroid(31518):   at (wrapper dynamic-method) System.Object:585983a8-79f2-48a3-ac33-5b4c905219f1 (intptr,intptr,intptr,intptr,int,long)
10-17 10:36:31.995 D/Mono    (31518): DllImport searching in: '__Internal' ('(null)').
10-17 10:36:31.995 D/Mono    (31518): Searching for 'java_interop_jnienv_throw'.
10-17 10:36:31.995 D/Mono    (31518): Probing 'java_interop_jnienv_throw'.
10-17 10:36:31.995 D/Mono    (31518): Found as 'java_interop_jnienv_throw'.
An unhandled exception occured.

10-17 10:36:34.115 E/mono    (31518):
10-17 10:36:34.115 E/mono    (31518): Unhandled Exception:
10-17 10:36:34.115 E/mono    (31518): System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.PlatformNotSupportedException: The PCL build of Realm is being linked which probably means you need to use NuGet or otherwise link a platform-specific Realm.dll to your main application.
10-17 10:36:34.115 E/mono    (31518):   at Realms.RealmPCLHelpers.ThrowProxyShouldNeverBeUsed () [0x00000] in <filename unknown>:0
10-17 10:36:34.115 E/mono    (31518):   at Realms.Realm.GetInstance (Realms.RealmConfiguration config) [0x00000] in <filename unknown>:0
10-17 10:36:34.115 E/mono    (31518):   at MyPack.SidePage.MyPage..ctor () [0x00008] in C:\Users\User\documents\visual studio 2015\Projects\MyPack\MyPack\MyPack\SidePage\MyPage.xaml.cs:14
10-17 10:36:34.115 E/mono    (31518):   at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
10-17 10:36:34.115 E/mono    (31518):   at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/mcs/class/corlib/System.Reflection/MonoMethod.cs:644
10-17 10:36:34.115 E/mono    (31518):   --- End of inner exception stack trace ---
10-17 10:36:34.115 E/mono    (31518):   at (wrapper dynamic-method) System.Object:585983a8-79f2-48a3-ac33-5b4c905219f1 (intptr,intptr,intptr,intptr,int,long)
10-17 10:36:34.115 E/mono    (31518):   at (wrapper native-to-managed) System.Object:585983a8-79f2-48a3-ac33-5b4c905219f1 (intptr,intptr,intptr,intptr,int,long)
10-17 10:36:34.115 E/mono-rt (31518): [ERROR] FATAL UNHANDLED EXCEPTION: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.PlatformNotSupportedException: The PCL build of Realm is being linked which probably means you need to use NuGet or otherwise link a platform-specific Realm.dll to your main application.
10-17 10:36:34.115 E/mono-rt (31518):   at Realms.RealmPCLHelpers.ThrowProxyShouldNeverBeUsed () [0x00000] in <filename unknown>:0
10-17 10:36:34.115 E/mono-rt (31518):   at Realms.Realm.GetInstance (Realms.RealmConfiguration config) [0x00000] in <filename unknown>:0
10-17 10:36:34.115 E/mono-rt (31518):   at MyPack.SidePage.MyPage..ctor () [0x00008] in C:\Users\User\documents\visual studio 2015\Projects\MyPack\MyPack\MyPack\SidePage\MyPage.xaml.cs:14
10-17 10:36:34.115 E/mono-rt (31518):   at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
10-17 10:36:34.115 E/mono-rt (31518):   at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in /Users/builder/data/lanes/3415/7db2aac3/source/mono/mcs/class/corlib/System.Reflection/MonoMethod.cs:644
10-17 10:36:34.115 E/mono-rt (31518):   --- End of inner exception stack trace ---
10-17 10:36:34.115 E/mono-rt (31518):   at (wrapper dynamic-method) System.Object:585983a8-79f2-48a3-ac33-5b4c905219f1 (intptr,intptr,intptr,intptr,int,long)
10-17 10:36:34.115 E/mono-rt (31518):   at (wrapper native-to-managed) System.Object:585983a8-79f2-48a3-ac33-5b4c905219f1 (intptr,intptr,intptr,intptr,int,long)
In mgmain JNI_OnLoad

Upvotes: 3

Views: 2075

Answers (2)

heroesch
heroesch

Reputation: 149

I had a similar problem using Xamarin.Forms 3.4.0.1008975 with Realm 4.0.1

Unhandled Exception: System.TypeInitializationException: The type initializer for 'Realms.SharedRealmHandle' threw an exception. occurred

The solution was to completely uninstall the nuget Realm package from all projects in the solution and reinstall Realm back again. Also make sure that you have the FodyWeaver.xml file in all projects.

Upvotes: 0

Cheesebaron
Cheesebaron

Reputation: 24460

As the stack trace indicates and the path you have posted in the comments shows. You have installed the PCL version into the platform specific projects. Which is why it throws the PlatformNotSupportedException exception you are getting.

Try reinstalling the NuGet in your platform specific projects. Alternatively you can manually change the reference to point at:

packages\Realm.0.78.1\lib\MonoAndroid44\Realm.dll

You shouldn't have any reference to the portable folder in your platform specific project.

Upvotes: 1

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