I already have another activity that i am using as the main activity called "MyCustomAppActivity", its code is here:

package org.qtproject.example.notification;
import org.qtproject.example.notification.R;
import org.qtproject.qt5.android.bindings.QtActivity;
import org.qtproject.qt5.android.bindings.QtService;
import org.qtproject.example.notification.MyCustomAppService;
import org.qtproject.example.notification.NotificationClient;
import android.content.Intent;
import android.util.Log;
import android.os.Bundle;

public class MyCustomAppActivity extends QtActivity {
    @Override
    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        Log.i("Activity", "Starting service!");
        Intent serviceIntent = new Intent(this, org.qtproject.example.notification.MyCustomAppService.class);
        startService(serviceIntent);
    }  
}

Or if that is not possible, then I want to be able to launch the service from the notification class and I will no longer need "MyCustomAppActivity" class, and I will put the Qt notification class as the main activity in the manifest. How can I do that?