private void refreshList() {
this.contact_adapter.clear();
ContactRepositoryInterface datasource =
ContactRepositoryFactory.getInstance().getContactRepository(this, this);
datasource.open();
for (Contact c : datasource.all()) {
this.contact_adapter.add(c);
}
datasource.close();
this.contact_adapter.notifyDataSetChanged();
EditText search_box = (EditText) findViewById(R.id.search_box);
contact_adapter.getFilter().filter(search_box.getText().toString());
}
