Executing C# Code on BOOT_COMPLETED

Hi all,

I'm building an Android plugin for Unity. I make an BroadcastReceiver that handles android.intent.action.BOOT_COMPLETED and want to execute some logic on intent received. Take a look at the code below.

 public class SomeBroadcastReceiver extends BroadcastReceiver {
   @Override
   public void onReceive(Context context, Intent intent) {
     // Some logic here
   }
 }

My goal is I want to execute code that's written in C# so that I have some flexibility from the C# land on how to handle that intent. I know that I might be able to achieve this using AndroidJavaProxy.

 // In Java land
 public class SomeBroadcastReceiver extends BroadcastReceiver {
   public interface IntentListener {
     public void onHandleIntent(String data);
   }

   private static IntentListener myListener;

   public static void setListener(IntentListener listener) {
     myListener = listener;
   }

   @Override
   public void onReceive(Context context, Intent intent) {
     myListener.onHandleIntent(intent.getStringExtra("data"));
   }
 }

 // In C# land
 class IntentCallback : AndroidJavaProxy {
   public IntentCallback() : base("com.my.package.SomeBroadcastReceiver$IntentListener") { }

   public void onHandleIntent(string data) {
     // Custom logic from C# land here.
   }
 }

The problem is... I don't know when/where to attach this listener. My first intuition is to attach the listener on OnGUI call. But this is incorrect since it's possible for the receiver to accept the intent even before we open the application.

Side note: I don't want to use UnityPlayer.UnitySendMessage since this will require hard configuration from the C# land (e.g.: to use this plugin, you'll need to make an object called PluginObject).

Any help is appreciated!