[Android] การดักจับสถานะ Notificaion ใน NotificationListenerService

import android.app.Notification;
import android.os.Bundle;
import android.service.notification.StatusBarNotification;
import android.util.Log;
import android.widget.Toast;
import me.leolin.shortcutbadger.ShortcutBadger;

public class NotificationListenerService extends android.service.notification.NotificationListenerService{
    public void onCreate() {
        super.onCreate();
    }
    @Override
    public void onNotificationPosted(StatusBarNotification sbn) {
        super.onNotificationPosted(sbn);
        Bundle mExtras=sbn.getNotification().extras;

        CharSequence bigText = (CharSequence) mExtras.getCharSequence(Notification.EXTRA_TEXT);
        if(bigText != null){
            Log.d("lognotification1",bigText.toString());
        }

        if(getPackageName().equals(sbn.getPackageName())){
            Toast.makeText(getApplicationContext(), "Hello Toast!", Toast.LENGTH_LONG).show();
            int badgeCount=30;
            ShortcutBadger.applyCount(getApplicationContext(),badgeCount);
        }
    }
    @Override
    public void onNotificationRemoved(StatusBarNotification sbn) {
        super.onNotificationRemoved(sbn);
        Toast.makeText(getApplicationContext(), "Remove Toast!", Toast.LENGTH_LONG).show();
        int badgeCount=0;
        ShortcutBadger.applyCount(getApplicationContext(),badgeCount);
    }
}