NotSupportedException Failed to activate JNI handle - MvvmCross

Question

I recently updated MvvmCross from 3.5.1 to 4.1.4 in my project and posted an application update with it.

After that, I see from Xamarin Insights that many users are experiencing;

Could not activate JNI Handle 0xffb35af8 (key_handle 0xe888654) of Java type 'md53997af0c1a24144057e197743f9f827a/HomeView' as managed type 'package.name.HomeView' almost all actions with their corresponding activity names. All of these actions are MvxActivities.

My Setup.cs -

 public class Setup : MvxAndroidSetup { public Setup(Context applicationContext) : base(applicationContext) { } protected override IMvxApplication CreateApp() { return new MVVM.App(); } protected override IMvxTrace CreateDebugTrace() { return new MvxDebugTrace(); } protected override MvvmCross.Droid.Views.IMvxAndroidViewPresenter CreateViewPresenter() { var presenter = new MyViewPresenter(); Mvx.RegisterSingleton<IMvxViewPresenter>(presenter); return presenter; } protected override void FillTargetFactories(MvvmCross.Binding.Bindings.Target.Construction.IMvxTargetBindingFactoryRegistry registry) { registry.RegisterCustomBindingFactory<View>( "ShowMe", v => new ViewScalingCustomBinding(v)); registry.RegisterCustomBindingFactory<View>( "ScaleMe", v => new ViewSizingCustomBinding(v)); registry.RegisterCustomBindingFactory<View>( "CustomFont", v => new FontCustomBinding(v)); registry.RegisterCustomBindingFactory<View>( "OtherCustomFont", v => new FontDincCustomBinding(v)); registry.RegisterCustomBindingFactory<View>( "ImageResize", v => new ImageResizeCustomBinding(v)); base.FillTargetFactories(registry); } protected override IMvxPluginConfiguration GetPluginConfiguration(Type plugin) { if (plugin == typeof(MvvmCross.Plugins.DownloadCache.Droid.Plugin)) { return new MvvmCross.Plugins.DownloadCache.Droid.MvxDownloadCacheConfiguration() { CacheName = "Pictures.MvvmCross", CacheFolderPath = "../Library/Caches/Pictures.MvvmCross/", MaxFiles = 500, MaxFileAge = TimeSpan.FromDays(1), MaxInMemoryBytes = 4000000, // 4 MB MaxInMemoryFiles = 1, MaxConcurrentDownloads = 10, DisposeOnRemoveFromCache = false }; } return null; } } 

What could be causing this problem?

Answer 1

I had this exception without using a custom view. Just try to clean the project, it solved my problem, however, however, it scares me from using Xamarin.