Артефакт при осуществлении первой попытки обратного вызова для метода onAccessibilityStateChanged

package com.comp.serviceaccessibility;
 
import java.util.List;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.view.accessibility.AccessibilityManager;
import android.widget.Toast;
 
public class MainActivity extends Activity {
 
      final static String LOG_TAG = "myLogs";
      
      public static String AccessibilityServiceId = "com.comp.serviceaccessibility/.AppAccessibilityService";     
      public static Boolean AcessibilityServiceIsEnabled;     
      public static AccessibilityManager accessibilityManager;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
 
        // Add Accessibility Service change listener        
        accessibilityManager = (AccessibilityManager)getSystemService(Context.ACCESSIBILITY_SERVICE);                
        accessibilityManager.addAccessibilityStateChangeListener(new AccessibilityManager.AccessibilityStateChangeListener() 
        {
            @Override
            public void onAccessibilityStateChanged(boolean b) 
            {
                Log.d(LOG_TAG, "onAccessibilityStateChanged");
                AcessibilityServiceIsEnabled = false;
                
                List<AccessibilityServiceInfo> runningServices = accessibilityManager.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_ALL_MASK);
                                
                for (AccessibilityServiceInfo service : runningServices) 
                {
                    if (AccessibilityServiceId.equals(service.getId())) 
                    {
                        AcessibilityServiceIsEnabled = true;
                    }
                }
                
                Toast.makeText(MainActivity.this, "AcessibilityServiceIsEnabled: "+ AcessibilityServiceIsEnabled.toString(), Toast.LENGTH_SHORT).show();
            }
        });            
        
        // ??? What code should I insert here to call onAccessibilityStateChanged() method MANUALLY?
    }
        
    public void onStartAccessibilitySettingsActivity(View v) 
    {
        Log.d(LOG_TAG, "Turn On Service In Settings");
        
        // Start Accessibility Settings Activity
        Intent intentAccessibilitySettings = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);      
        PackageManager packageManager = getPackageManager(); 
        ComponentName componentName = intentAccessibilitySettings.resolveActivity(packageManager);
        if (componentName != null) {
            try {
                startActivity(intentAccessibilitySettings);    
            } catch (ActivityNotFoundException ex) {
                Log.d(LOG_TAG, "Accessibility Settings Activity is not found");       
            }
        } 
      }    
}

package com.comp.serviceaccessibility;
 
import android.accessibilityservice.AccessibilityService;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.util.Log;
import android.view.accessibility.AccessibilityEvent;
 
public class AppAccessibilityService extends AccessibilityService {
 
    public static String activityName;
 
    @Override
    public void onServiceConnected() {      
        Log.i("***", "onServiceConnected ");
        AccessibilityServiceInfo info = new AccessibilityServiceInfo();
        info.eventTypes = AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
        info.notificationTimeout = 100;
        info.feedbackType = AccessibilityEvent.TYPES_ALL_MASK;
        setServiceInfo(info);
    }
        
    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        Log.i("***", "onAccessibilityEvent ");
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) { 
            activityName = String.valueOf(event.getClassName());
            Log.i("***", "onAccessibilityEvent " + activityName);
            //Toast.makeText(getApplicationContext(), activityName, Toast.LENGTH_LONG).show();            
        }
    }
 
    @Override
    public void onInterrupt() {
        Log.i("***", "onInterrupt ");
    }
}

public class MyAccessibilityService extends AccessibilityService {
 
    static final String ACTION_SERVICE_STARTED = "ACTION_SERVICE_STARTED";
    static final String ACTION_SERVICE_STOPPED = "ACTION_SERVICE_STOPPED";
 
    @Override
    public boolean onUnbind(Intent intent) {
        sendMessageToActivity(false);
        return super.onUnbind(intent);
    }
 
    @Override
    protected void onServiceConnected() {
        sendMessageToActivity(true);
    }
 
    private void sendMessageToActivity(boolean isStarted) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.setAction(isStarted ? ACTION_SERVICE_STARTED : ACTION_SERVICE_STOPPED);
        startActivity(intent);
    }
}

public class MainActivity extends AppCompatActivity {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        Intent intent = new Intent(MainActivity.this, MyAccessibilityService.class);
        startService(intent);
 
        if (getIntent() != null) {
            doSomething();
        }
    }
 
    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
    }
 
    private void doSomething() {
        String action = getIntent().getAction();
        if (MyAccessibilityService.ACTION_SERVICE_STARTED.equals(action)) {
            Log.i("***", "onNewIntent: SERVICE STARTED");
        } else if (MyAccessibilityService.ACTION_SERVICE_STOPPED.equals(action)) {
            Log.i("***", "onNewIntent: SERVICE STOPPED");
        }
    }
}

    private void sendMessageToActivity(boolean isStarted) 
    {
        Intent intent = new Intent(this, MainActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setAction(isStarted ? ACTION_SERVICE_STARTED : ACTION_SERVICE_STOPPED);
        startActivity(intent);
    }