Refresh ListView with ArrayAdapter after editing an Item

I have a ListView, which displays a list of notes taken from a table in SQLiteDatabase with ArrayAdapter.

public class NotepadActivity extends ListActivity {

protected static final int ADD_NEW_NOTE = 0;
protected static final int EDIT_NOTE = 1;
ArrayAdapter<Note> adapter;
NotesManager manager;
private Note nNoteToDelete;
ArrayList<Note> lstAllNotes;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    findViewById(R.id.btnAddNewNote).setOnClickListener(addNewNote);
    manager = new NotesManager(this);
    lstAllNotes = manager.getAllNotes();
    adapter = new ArrayAdapter<Note>(this, R.layout.note, lstAllNotes);
    setListAdapter(adapter);
    getListView().setOnItemClickListener(editNote);
    registerForContextMenu(getListView());
}

When I click on an Item in this ListView, it takes this Note object to the EditNote activity:

private OnItemClickListener editNote = new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        Note currNote = (Note)parent.getItemAtPosition(position);

        int curr_note_id = currNote.getId();
        String curr_note_title = currNote.getTitle().toString();
        String curr_note_details = currNote.getDetails().toString();

        Intent editNote = new Intent(NotepadActivity.this, EditNote.class);
        editNote.putExtra("CURR_NOTE_ID", curr_note_id);
        editNote.putExtra("CURR_NOTE_TITLE", curr_note_title);
        editNote.putExtra("CURR_NOTE_DETAILS", curr_note_details);

        startActivityForResult(editNote, EDIT_NOTE);

    }
};

I can edit the title of the note in there and the content. When I hit the Save button, it sends back to the main activity the Strings of Title and the Details and the ID int:

public class EditNote extends Activity implements OnClickListener {

int curr_note_id;
String curr_note_title;
String curr_note_details;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.editnote);

    curr_note_id = getIntent().getExtras().getInt("CURR_NOTE_ID");
    curr_note_title = getIntent().getExtras().getString("CURR_NOTE_TITLE");
    curr_note_details = getIntent().getExtras().getString(
            "CURR_NOTE_DETAILS");

    ((EditText) findViewById(R.id.edtTitle)).setText(curr_note_title);
    ((EditText) findViewById(R.id.edtDetails)).setText(curr_note_details);

    findViewById(R.id.btnSave).setOnClickListener(this);
    findViewById(R.id.btnCancel).setOnClickListener(this);
}

@Override
public void onClick(View v) {

    switch (v.getId()) {
    case R.id.btnSave:
        String strNoteTitle = ((EditText) findViewById(R.id.edtTitle)).getText().toString().trim();
        String strNoteDetails = ((EditText) findViewById(R.id.edtDetails)).getText().toString().trim();

        if (!strNoteTitle.equals("")) {

            Intent data = new Intent();
            data.putExtra("NOTE_ID", curr_note_id);
            data.putExtra("NOTE_TITLE", strNoteTitle);
            data.putExtra("NOTE_DETAILS", strNoteDetails);
            setResult(RESULT_OK, data);
            finish();
        } else {
            ((EditText) findViewById(R.id.edtTitle))
                    .setError("A note must contain a title");
        }

        break;
    case R.id.btnCancel:
        setResult(RESULT_CANCELED);
        finish();
        break;
    }

}

}

And in the main activity it should update the DB and the ListView with the new Title, if there were changes. My code does update the DB, but I don't see the change in the ListView immediately, only if I exit the app and open it again. Here's the code (watch the second case, EDIT_NOTE):

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        switch (requestCode) {
        case ADD_NEW_NOTE:
            String noteTitle = data.getExtras().getString("NOTE_TITLE");
            String noteDetails = data.getExtras().getString("NOTE_DETAILS");
            Note nNewNote = new Note(-1, noteTitle, noteDetails);
            adapter.add(nNewNote);
            manager.addNote(nNewNote);
            break;
        case EDIT_NOTE:
            int noteID = data.getExtras().getInt("NOTE_ID");
            noteTitle = data.getExtras().getString("NOTE_TITLE");
            noteDetails = data.getExtras().getString("NOTE_DETAILS");
            nNewNote = new Note(noteID, noteTitle, noteDetails);
            Toast.makeText(NotepadActivity.this, noteTitle + "\n" + noteDetails, Toast.LENGTH_SHORT).show();
            manager.updateNote(nNewNote);           
            break;
        }

    }
    super.onActivityResult(requestCode, resultCode, data);
}

After manager.updateNote(nNewNote); I tried to use adapter.notifyDataSetChanged(); but that didn't work - I didn't see the change in the ListView. Perhaps I used it wrong, perhaps I should use something else...

So how can I make the ListView refresh? How can I see change immediately, without restarting the app?

Thank you!