Spinner with states and cities?

Question

How does a spinner with states and cities of Brazil? By clicking on the state, list the cities?

What is the way to do this? An all-registered bank? Sqlite? Need a model ready for states and cities?

Answer 1

Just create table (Sqlite) with states and other with cities, interconnected by a foreign key and the respective clear objects.

Of course we should already have the states and cities already registered in the bank.

Then just catch the event from spinner of states, for example:

spinner.setOnItemSelectedListener(new OnItemSelectedListener() 
{
    @Override
    public void onItemSelected(AdapterView<?> parentView, View view, int pos, long id) 
    {
        Estado es = (Estado) parentView.getItemAtPosition(pos).

        // Código de pesquisa na Tabela cidades das que tiverem o estado selecionado. 
        // Exemplo:
        ArrayList<Cidade> listaCidades = buscarNoBanco(es);

        // Depois é só adicionar a listaCidades a um outro spinner 
        // ou uma listView de cidades.
    }
});