Xamarin.iOS app with EFCore 2.0 SQLitePCL.Batteries.Init()

[alexdrl]

A Xamarin.iOS app with EFCore 2.0 needs a call to

SQLitePCL.Batteries_V2.Init();

If the call is not made, the app initialization throws this error message.

You need to call SQLitePCL.raw.SetProvider(). If you are using a bundle package, this is done by calling SQLitePCL.Batteries.Init().

Like explained here

Steps to reproduce

Xamarin.iOS project working with EFCore 2.0. Solution with a common .NET Standard project which shares code between iOS and Android, using PackageReference.

Further technical details

EF Core version: 2.0.0
Database Provider: Microsoft.EntityFrameworkCore.Sqlite
Operating system: iOS
IDE: Visual Studio 15.4

[bricelam]

Correct. I don't think Xamarin.iOS can handle the Assembly.Load() call. And binding directly to SQLitePCLRaw.batteries_v2.dll will cause problems if you're not using a bundle.

[alexdrl]

I use the SQLitePCLraw assembly that gets added as a transitive dependency, and call that Init method, the app works correctly. In the project assets json, the Xamarin.iOS SQLitePCLraw package gets restored correctly.

[bricelam]

We should probably document this on the Supported .NET Implementations page or thereabouts.

[alexdrl]

The documentation already stated that there are problems in Xamarin.iOS but there is no page that describes this (or other) workarounds.

[bricelam]

This issue was moved to dotnet/EntityFramework.Docs#597