private void refreshAccounts() {
    ListView accountsList = (ListView) findViewById(R.id.listView);

    ArrayAdapter<AccountLine> adapter =
        new ArrayAdapter<AccountLine>(
            this, android.R.layout.simple_list_item_1, accountRepository.getAccounts());

    accountsList.setAdapter(adapter);
  }
 @Override
 public boolean onContextItemSelected(MenuItem item) {
   AdapterView.AdapterContextMenuInfo info =
       (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
   ListView accountsList = (ListView) findViewById(R.id.listView);
   AccountLine selectedLine = (AccountLine) accountsList.getAdapter().getItem(info.position);
   accountRepository.remove(selectedLine);
   refreshAccounts();
   return true;
 }