Question

I have a spinner and a database so when i click the spinner i want to show the value(name) of the contacts in it but in a simple code. so they are separetated javas and xml layouts the spinner is in the (Novamensagem.java novamensagem.xml) and the contacs database is in the (Adicionarcontato.java adicionarcontato.xml) if you can specify and simply the code is better, thanks

    final TextView spinnerContato = (TextView) findViewById(R.id.spinner);
    String[] campos = new String[] {"nome", "telefone"};

    Cursor c = db.query("contatos", campos, null, null, null, null, null);
    c.moveToFirst();
    String lista = "";
    if(c.getCount() > 0) {
        while(true) {
            lista = lista + c.getString(c.getColumnIndex("nome")).toString() + "";
            if(!c.moveToNext()) break;
        }

        spinnerContato.setText(lista);
    }

thats the code but it gives the erros (more explained in comments)
//

the entire code:

ArrayList<String>() list = null;

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

    db = openOrCreateDatabase("banco.db", Context.MODE_WORLD_WRITEABLE, null);

     SalvaMensagem();

    //Data e Hora
    setCurrentDateOnView();
    addListenerOnButton();
    setCurrentTimeOnView();
    addListenerOnButton2();

    //Spinner
    DadosSpinner();





}





private void DadosSpinner() {
    // TODO Auto-generated method stub

    final TextView spinnerContato = (TextView) findViewById(R.id.spinner);
    String[] campos = new String[] {"nome", "telefone"};

    list = new ArrayList<String>();
    Cursor c = db.query("contatos", campos, null, null, null, null, null);
    c.moveToFirst();
    String lista = "";
    if(c.getCount() > 0) {
        while(true) {
           list.add(c.getString(c.getColumnIndex("nome")).toString());
            if(!c.moveToNext()) break;
        }
    }

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, list);


    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);


    spinner.setAdapter(adapter);        
    }`

there is.

Answer 1

Check this

list = new ArrayList<String>();
Cursor c = db.query("contatos", campos, null, null, null, null, null);
c.moveToFirst();
String lista = "";
if(c.getCount() > 0) {
    while(true) {
       list.add(c.getString(c.getColumnIndex("nome")).toString());
        if(!c.moveToNext()) break;
    }


}   

This helps you to get an arrayList of items.

Next do this

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
        android.R.layout.simple_spinner_item, list);


adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);


spinner.setAdapter(adapter);

Be back if you have any issues