Android - Changing observer database using ORM GreenDao

Question

I am using GreenDao in one of my Android projects. I am trying to implement an observer / listener when the changes are made.

So far I have created the basic functions of static functions (save, replace and delete) that just send an event (via EventBus), but this approach gives me a lot of headaches.

I'm currently trying to use ContentObserver, which for some reason does not work (see the attached code), but I would like you to hear suggestions for other common solutions.

observer:

public class DBObserver extends ContentObserver {

    public DBObserver() {
        super(null);
        Logger.e("DBObserver was initialized!");
    }

    @Override
    public void onChange(boolean selfChange) {
        super.onChange(selfChange);
        Log.d("SOMETHING CHANGED IN DB OBSERVER");
    }

    @Override
    public void onChange(boolean selfChange, Uri uri) {
        super.onChange(selfChange, uri);
        Log.d("SOMETHING CHANGED IN DB OBSERVER");
    }
}

for the observer (implemented in the onCreate application):

DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this, DB_NAME, null);
SQLiteDatabase db = helper.getWritableDatabase();
DaoMaster daoMaster = new DaoMaster(db);
DaoSession daoSession = daoMaster.newSession();
getContentResolver().registerContentObserver(TicketModelContentProvider.CONTENT_URI, true, new DBObserver());

Thanks.

Answer 1

GreenDao,

daoSession.getYourBeanDao().update(yourBean);

,

mContext.getContentResolver().notifyChange(YOUR_URI, null);

.