[nativeaot] support for Application subclasses

samples/NativeAOT/JavaInteropRuntime.cs

@@ -34,10 +34,11 @@ static void JNI_OnUnload (IntPtr vm, IntPtr reserved)
 	static void init (IntPtr jnienv, IntPtr klass)
 	{
 		try {
+			var typeManager = new NativeAotTypeManager ();
 			var options = new JreRuntimeOptions {
 				EnvironmentPointer          = jnienv,
-				TypeManager                 = new NativeAotTypeManager (),
-				ValueManager                = new NativeAotValueManager (),
+				TypeManager                 = typeManager,
+				ValueManager                = new NativeAotValueManager (typeManager),
 				UseMarshalMemberBuilder     = false,
 				JniGlobalReferenceLogWriter = new LogcatTextWriter (AndroidLogLevel.Debug, "NativeAot:GREF"),
 				JniLocalReferenceLogWriter  = new LogcatTextWriter (AndroidLogLevel.Debug, "NativeAot:LREF"),

samples/NativeAOT/MainActivity.cs

@@ -1,15 +1,18 @@
 using Android.Runtime;
+using Android.Util;
 using System.Reflection;
 using System.Runtime.InteropServices;
 
 namespace NativeAOT;
 
-[Register("my/MainActivity")] // Required for typemap in NativeAotTypeManager
-[Activity(Label = "@string/app_name", MainLauncher = true)]
+// Name required for typemap in NativeAotTypeManager
+[Activity (Label = "@string/app_name", MainLauncher = true, Name = "my.MainActivity")]
 public class MainActivity : Activity
 {
     protected override void OnCreate(Bundle? savedInstanceState)
     {
+        Log.Debug ("NativeAOT", "MainActivity.OnCreate()");
+
         base.OnCreate(savedInstanceState);
 
         // Set our view from the "main" layout resource

samples/NativeAOT/MainApplication.cs

@@ -0,0 +1,23 @@
+using Android.Runtime;
+using Android.Util;
+
+/// <summary>
+/// NOTE: This class is not required, but used for testing Android.App.Application subclasses.
+/// Name required for typemap in NativeAotTypeManager
+/// </summary>
+[Application (Name = "my.MainApplication")]
+public class MainApplication : Application
+{
+    public MainApplication (IntPtr handle, JniHandleOwnership transfer)
+        : base (handle, transfer)
+    {
+        Log.Debug ("NativeAOT", $"Application..ctor({handle.ToString ("x2")}, {transfer})");
+    }
+
+    public override void OnCreate ()
+    {
+        Log.Debug ("NativeAOT", "Application.OnCreate()");
+
+        base.OnCreate ();
+    }
+}

samples/NativeAOT/NativeAotRuntimeProvider.java

@@ -21,6 +21,8 @@ public boolean onCreate() {
     public void attachInfo(android.content.Context context, android.content.pm.ProviderInfo info) {
         Log.d(TAG, "NativeAotRuntimeProvider.attachInfo(): calling JavaInteropRuntime.init()…");
         JavaInteropRuntime.init();
+        // NOTE: only required for custom applications
+        net.dot.android.ApplicationRegistration.registerApplications();
         super.attachInfo (context, info);
     }
 

samples/NativeAOT/NativeAotTypeManager.cs

@@ -13,12 +13,14 @@ partial class NativeAotTypeManager : JniRuntime.JniTypeManager {
 	// TODO: list of types specific to this application
 	Dictionary<string, Type> typeMappings = new () {
 		["android/app/Activity"]                = typeof (Android.App.Activity),
+		["android/app/Application"]             = typeof (Android.App.Application),
 		["android/content/Context"]             = typeof (Android.Content.Context),
 		["android/content/ContextWrapper"]      = typeof (Android.Content.ContextWrapper),
 		["android/os/BaseBundle"]               = typeof (Android.OS.BaseBundle),
 		["android/os/Bundle"]                   = typeof (Android.OS.Bundle),
 		["android/view/ContextThemeWrapper"]    = typeof (Android.Views.ContextThemeWrapper),
 		["my/MainActivity"]                     = typeof (MainActivity),
+		["my/MainApplication"]                  = typeof (MainApplication),
 	};
 
 	public NativeAotTypeManager ()