realm in Xamarin, System.EntryPointNotfoundException when trying to use realm

Question

I have installed realm in a Xamarin app and when I try to use an object (count, write, etc) it gives me a System.EntryPointNotFoundException.

Below code:

_realm = Realm.GetInstance();
_realm.Write(() =>
            {
                var myConfig = _realm.CreateObject<Config>();
                myConfig.Email = "";
                myConfig.User = "";
            });

System.EntryPointNotFoundException: shared_realm_begin_transaction at at (wrapper managed-to-native) Realms.NativeSharedRealm:begin_transaction (Realms.SharedRealmHandle) at Realms.Transaction..ctor (Realms.SharedRealmHandle sharedRealmHandle) [0x0000d] in :0 at Realms.Realm.BeginWrite () [0x00000] in :0 at Realms.Realm.Write (System.Action action) [0x00000] in :0 at rasoApp.ConfigViewModel..ctor () [0x00025] in /Users/luis/Projects/rasoApp/rasoApp/viewModels/ConfigViewModel.cs:22 at rasoApp.ConfigPage.SetBinding (Xamarin.Forms.BindableProperty targetProperty, Xamarin.Forms.BindingBase binding) [0x0000e] in /Users/luis/Projects/rasoApp/rasoApp/views/ConfigPage.xaml.cs:13 at rasoApp.HomePage.btnOpenConfig (System.Object sender, System.EventArgs e) [0x00007] in /Users/luis/Projects/rasoApp/rasoApp/views/HomePage.xaml.cs:18 at Xamarin.Forms.Button.Xamarin.Forms.IButtonController.SendClicked () [0x00020] in :0 at Xamarin.Forms.Platform.iOS.ButtonRenderer.OnButtonTouchUpInside (System.Object sender, System.EventArgs eventArgs) [0x0000e] in :0 at UIKit.UIControlEventProxy.Activated () [0x00007] in /Users/builder/data/lanes/3412/3cf8aaed/source/maccore/src/UIKit/UIControl.cs:38 at at (wrapper managed-to-native) UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr) at UIKit.UIApplication.Main (System.String[] args, IntPtr principal, IntPtr delegate) [0x00005] in /Users/builder/data/lanes/3412/3cf8aaed/source/maccore/src/UIKit/UIApplication.cs:79 at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/builder/data/lanes/3412/3cf8aaed/source/maccore/src/UIKit/UIApplication.cs:63 at rasoApp.iOS.Application.Main (System.String[] args) [0x00008] in /Users/luis/Projects/rasoApp/iOS/Main.cs:17

Answer 1

Congratulations on an interesting problem!

I have seen a similar error but only in recent work I was doing refining code generation, when I generated bad IL code. We have no previous issues recorded nor any discussions of EntryPointNotFoundException messages that I can find.

If you try building one of our examples from the Realm source download, such as QuickJournal does that work?

If you can send a full project demonstrating the problem to help@realm.io that is probably the fastest way to work out what is happening.

Update 2016-07-11 Looking at another SO question made me think of a few more things to try:

• Does this happen on all platforms?

  - Do you have Full Linking enabled in Xamarin studio?

Earlier Suggestions

Does your app have a PCL containing that logic?

Did you also install the Realm NuGet into the main application (IOS or Android) projects? That is a necessary step. The main Realm libraries are only included with the platform-specific dlls which NuGet adds to IOS or Android projects.