Android Refresh listView on tabbed fragment

I was using every piece of code I could find for my problem but seems that my understaning of android is still not good enough and I cannot make this thing work. I have an app with tabs. Each tab contains different list view. One of the tabs contains "favouirte list view". Users can add item from other tabs to favourite list view. I have created sqlite db and on button press item is inserted into the db and from the db list view is populated.

I have tried notifyDataSetChanged();, favouriteList.invalidateViews();, favouriteList.refreshDrawableState(); but none of these worked for me. I guess I do not understand how thing works and I am making some mistakes.

Here is my code:

Main Activity:

public class MainActivity extends FragmentActivity implements ActionBar.TabListener {

private int counter = 0;

private ViewPager viewPager;
private ActionBar actionBar;
private String[] tabs = { "Favourites", "Films", "Other", "All", "NSFW" };

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // Initilization
    viewPager = (ViewPager) findViewById(R.id.pager);
    actionBar = getActionBar();
    TabsPagerAdapter mAdapter = new TabsPagerAdapter(getSupportFragmentManager());

    viewPager.setAdapter(mAdapter);
    actionBar.setHomeButtonEnabled(false);
    actionBar.setDisplayShowTitleEnabled(false);
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
    actionBar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE);

   // Adding Tabs
    for (String tab_name : tabs) {
        actionBar.addTab(actionBar.newTab().setText(tab_name).setTabListener(this));
    }
    actionBar.setSelectedNavigationItem(1);

    /**
     * on swiping the viewpager make respective tab selected
     * */
    viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

        @Override
        public void onPageSelected(int position) {
            // on changing the page
            // make respected tab selected
            actionBar.setSelectedNavigationItem(position);

        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {
        }

        @Override
        public void onPageScrollStateChanged(int arg0) {
        }
    });


}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}

@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
    viewPager.setCurrentItem(tab.getPosition());
}

@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

Favourites Fragment:

public class FavouritesFragment extends Fragment {
DBAdapter myDb;
ListView favouritesList;
SimpleCursorAdapter myCursorAdapter;

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View v = inflater.inflate(R.layout.fragment_ulubione, container, false);
    favouritesList= (ListView)v.findViewById(R.id.favouritesList);
    registerForContextMenu(ulubioneList);
    openDB();
    myDb.populateDataBaseOnStart();
    populateListViewFromDB();
    registerClickCallback();
    return v;
}

public void openDB() {
    myDb = new DBAdapter(getActivity());
    myDb.open();
}

public void onDestroy() {
    super.onDestroy();
    closeDB();
}

private void closeDB() {
    myDb.close();
}

private void populateListViewFromDB() {
    Cursor cursor = myDb.getFavourites();
    getActivity().startManagingCursor(cursor);
    String[] fromFieldNames = new String[]{DBAdapter.KEY_TITLE};
    int[] toViewIDs = new int[]{R.id.item_name};
    myCursorAdapter = new SimpleCursorAdapter(getActivity(), R.layout.item_layout, cursor, fromFieldNames, toViewIDs);
    ulubioneList.setAdapter(myCursorAdapter);
}

public void registerClickCallback() {

    ulubioneList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View viewClicked, int position, long idDB) {

            String title = "";
            Cursor cursor = myDb.getRow(idDB);
            if (cursor.moveToFirst()) {
                title = cursor.getString(DBAdapter.COL_FILENAME);
            }
            cursor.close();

            int RawId = getResources().getIdentifier("raw/" + title, "raw", getActivity().getPackageName());
            if (MyMediaPlayer.mp == null) MyMediaPlayer.mp = new MediaPlayer();
            else if (MyMediaPlayer.mp.isPlaying()) MyMediaPlayer.mp.stop();
            MyMediaPlayer.mp.reset();

            String fileName = "android.resource://" + getActivity().getPackageName() + "/" + RawId;

            try {
                MyMediaPlayer.mp.setDataSource(getActivity().getApplicationContext(), Uri.parse(fileName));
                MyMediaPlayer.mp.prepare();
            } catch (IOException e) {
                e.printStackTrace();
            }
            MyMediaPlayer.mp.start();

        }
    });
}

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    menu.setHeaderTitle("Set As");
    menu.add(0, v.getId(), 0, "Ringtone Sound");
    menu.add(0, v.getId(), 0, "SMS Sound");
    menu.add(0, v.getId(), 0, "Add to favourites");
    menu.add(0, v.getId(), 0, "Remove from favourites");
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
    int index = info.position;
    String title = "";
    String fileName = "";

    Cursor cursor = myDb.getRow(index);
    if (cursor.moveToFirst()) {
        fileName = cursor.getString(DBAdapter.COL_FILENAME);
        title = cursor.getString(DBAdapter.COL_TITLE);
    }
    cursor.close();

    if (item.getTitle() == "Ringtone Sound") {
        setAsRingtone(title, fileName);
        Toast.makeText(getActivity().getApplicationContext(),  title.toUpperCase() + " set as Ringtone Sound", Toast.LENGTH_LONG).show();

    } else if (item.getTitle() == "SMS Sound") {
        setAsSMS(title, fileName);
        Toast.makeText(getActivity().getApplicationContext(), "Ustawiono " + title.toUpperCase() + " Jako Dźwięk SMS", Toast.LENGTH_LONG).show();

    } else if (item.getTitle() == "Add to favourites") {
        myDb.addToFavourites(title);
        //myCursorAdapter.notifyDataSetChanged();
 populateListViewfromDB();
        Toast.makeText(getActivity().getApplicationContext(), "Dodano " + title.toUpperCase() + " Do Ulubionych", Toast.LENGTH_LONG).show();

    } else if (item.getTitle() == "Remove from favourites") {
        myDb.removeFromFavourites(title);
        favouritesList.refreshDrawableState();
populateListViewFromDB()
        Toast.makeText(getActivity().getApplicationContext(), "Usunięto " + title.toUpperCase() + " z Ulubionych", Toast.LENGTH_LONG).show();
    }  else {
        return false;
    }
    return true;
}

Database is updated correctly.