Question

i have a listview and its data values is separated by blocks( Item1, Item2…) but i want to know how to show (Item 1, Sub Item 1…) ?
well here is the code that shows only the Item, so how do i show the Item and the Sub Item?

code:

           //LISTVIEW database CONTATO
    ListView user = (ListView) findViewById(R.id.lvShowContatos);
    //String = simple value ||| String[] = multiple values/columns
    String[] campos = new String[] {"nome", "telefone"};

    list = new ArrayList<String>();
    Cursor c = db.query( "contatos", campos, null, null, null, null, "nome" + " ASC ");
    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_list_item_1, list);

    user.setAdapter(adapter);

the code i putted there but still gives me errors and i dont see where it gets the values from yet.

             //LISTVIEW database CONTATO
    ListView user = (ListView) findViewById(R.id.lvShowContatos);
    //String = simple value ||| String[] = multiple values/columns
    String[] campos = new String[] {"nome", "telefone"};


    ArrayList<HashMap<String, Object>> items = new ArrayList<HashMap<String,Object>>();
    HashMap<String, Object> listItem;

    Cursor c = db.query( "contatos", campos, null, null, null, null, "nome" + " ASC ");
    c.moveToFirst();

    listItem = new HashMap<String, Object>();
    listItem.put("nome", "your_item_text");
    listItem.put("telefone", "your_subitem_text");
    items.add(listItem);

    adapter = new SimpleAdapter(this, items, R.layout.custom_list_layout, new String[]{"item", "subitem"}, new int[]{R.id.text_item, R.id.text_subitem});

    user.setAdapter(adapter);

Answer 1

Use SimpleAdapter, not the ArrayAdapter to populate the ListView: http://developer.android.com/reference/android/widget/SimpleAdapter.html
There you will have an array of fields to populate for each item, like:

ArrayList<HashMap<String, Object>> items = new ArrayList<HashMap<String,Object>>();
HashMap<String, Object> listItem;

listItem = new HashMap<String, Object>();
listItem.put("item", "your_item_text");
listItem.put("subitem", "your_subitem_text");
items.add(listItem);

adapter = new SimpleAdapter(this, items, R.layout.custom_list_layout, new String[]{"item", "subitem"}, new int[]{R.id.text_item, R.id.text_subitem});

listview.setAdapter(adapter);

Remember also to create custom_list_layout.xml for your ListView items, and make sure it contains textViews with proper ids:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >

    <TextView
        android:id="@+id/text_item"
        ... />

    <TextView
        android:id="@+id/text_subitem"
        ... />

</RelativeLayout>