Adding Akavache Static Linker class or Initializer error

Question

I'm currently using Visual Studio Mac 2019 for to build my iOs Xamarin Forms Application.

My Application Akavache to store persistent data specifically credentials which I utilizes its BlobCache.Secure storage, but sadly the data doesn't persist.

I found that I should add either of the following: 1. Linker Class

using System;
using Akavache.Sqlite3;

namespace NameSpace.iOS
{
    [Preserve]
    public static class LinkerPreserve
    {
        static LinkerPreserve()
        {
            var persistentName = typeof(SQLitePersistentBlobCache).FullName;
            var encryptedName = typeof(SQLiteEncryptedBlobCache).FullName;
        }
    }

    public class PreserveAttribute : Attribute
    {
    }
}

or

2. Initializer

Akavache.Registrations.Start("FollowTheDrop");

Akavache: saved value not available after iOS app restart

but every time I add the solution above the following error below occurs during the build

MTOUCH : error MT2101: Can't resolve the reference 'System.Int32 SQLitePCL.raw::sqlite3_bind_blob(SQLitePCL.sqlite3_stmt,System.Int32,System.Byte[])', referenced from the method 'System.Void Akavache.Sqlite3.BulkInsertSqliteOperation/<>c__DisplayClass7_0::b__0()' in 'SQLitePCLRaw.core, Version=1.1.13.388, Culture=neutral, PublicKeyToken=1488e028ca7ab535'.

Am I missing something that causes this error?

score 0 · Answer 1 · answered Oct 06 '22 at 19:04

It was solved by updating the following Nuget Packages below which has dependencies on each other:

Akavache 9.0.1
Splat 14.3.1
fusillade 2.4.47

Lastly when adding the linker static class consider adding a Preserve Attribute as shown below:

[Preserve]
public static class LinkerPreserve
{
    static LinkerPreserve()
    {
        var persistentName = typeof(SQLitePersistentBlobCache).FullName;
        var encryptedName = typeof(SQLiteEncryptedBlobCache).FullName;
    }
}

public class PreserveAttribute : Attribute
{
}

Adding Akavache Static Linker class or Initializer error

1 Answers1