Android notify when phone book is updated(Content Observer)

Question

I want to get a notification on my phone if there is any change in the contact database(add,delete).Right now i am using ContentObserver to get notified.Following is my code

Answer 1

I have changed onChange code to this.

@Override
public void onChange (boolean selfChange)
{
    this.onChange(selfChange, null);
}

@Override
public void onChange (boolean selfChange,Uri uri)
{
  Cursor cursor = mCntxt.getContentResolver().query(
            ContactsContract.Contacts.CONTENT_URI, null, null, null,ContactsContract.Contacts.CONTACT_LAST_UPDATED_TIMESTAMP + " Desc");
    if (cursor.moveToNext()) {
        String id = cursor.getString(
                cursor.getColumnIndex(ContactsContract.Contacts._ID));
        String name = cursor.getString(
                cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        Log.w("Contact ID", id);
        Log.w("Person Name",name);
       }
}

Hope this helps..