How to modify and save the new modified listview item?

Question

I would like to know how to save multiple positions from a listview. As an example, let the user bookmark certain list items.

I don’t know what would be useful to get an efficient response, so I will post some important parts that exemplify how my code works:

Listview on the fragment

 ItensAdapter meuCustomAdapter = new ItensAdapter(getActivity()
                    .getApplicationContext(),
                    Lista.Itens.setItens());
            lista.setAdapter(meuCustomAdapter);

            lista.setOnItemClickListener(new OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> arg0, View arg1,
                        int position, long arg3) {
                        //Aqui eu iria salvar mudando a cor de fundo do item
                }

            });

Adapter

public class ItensAdapter extends BaseAdapter {

private List<Info> informacoes;

private Context contexto;

private Typeface fonte;


public ItensAdapter(Context contexto, List<Info> informacoes) {
    this.contexto = contexto;
    this.informacoes = informacoes;
}

@Override
public int getCount() {
    return informacoes.size();
}

@Override
public Object getItem(int position) {
    return informacoes.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}


@Override
public View getView(int position, View convertView, ViewGroup parent) {
    TextView titulos = new TextView(contexto);

    titulos.setTypeface(fonte);
    titulos.setTextSize(18);
    titulos.setGravity(Gravity.CENTER);
    titulos.setPadding(8, 48, 8, 48);
    titulos.setText(informacoes.get(position).getNome());

    return titulos;
}
}

Modified class Info

 public class Info {

private String nome;

public Info(String nome) {
    this.nome = nome;

}

public String getNome() {
    return nome;
}

public void setNome(String nome) {
    this.nome = nome;
}
}

List Class

 public class Lista {

static Context context;

// TODO

public static class Itens {

    public final static Info ob1 = new Info(
            "Item 1");
    public final static Info ob2 = new Info(
            "Item 2");
    public final static Info ob3 = new Info(
            "Item 3");
    public final static Info ob4 = new Info(
            "Item 4");
    public final static Info ob5 = new Info(
            "Item 5");

    public static List<Info> setItens() {
        final List<Info> itens = new ArrayList<Info>();

        itens.add(ob1);
        itens.add(ob2);
        itens.add(ob3);
        itens.add(ob4);
        itens.add(ob5);


        return itens;
    }

}

Answer 1

An option would be to retrieve the items via the method get of lisView and write the data to a file Shared Preference android

 String favorito = listView.getSelectedItem();

 SharedPreferences settings = getActivity().getSharedPreferences(PREFS_NAME, 0);
 SharedPreferences.Editor editor = settings.edit();
 editor.putString(KEY, favorito);
 editor.commit();

After saving you would only need to recover the information in the Shared Preference file and click on the list.

Answer 2

What I do in this case is to have two lists:

• a list of all items that appear on listView;
• another list of selected items (lista_selec).

Then every time I click CheckBox (true) add the item to lista_selec.

In other words, in your onItemClick just check for each object of the selected position whether it is active or not.
If it is active, as clicked will pass the deactivative (removes from lista_selec), if it is deactivated when clicking is active (you add the lista_selec).

To lista_selec just to keep track of the selected fields and then write to the BD. That’s what you wanted right?