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POHow to make two level lists
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  1. POHow to make two level lists
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    copied!<p>I'm making a simple app where I'll have two level lists. I've created the first level list with <code>ListView</code> but I'm not sure how to go about creating second level list. </p> <p>Example:</p> <p>First level list is:</p> <pre><code> Fruits Cookies </code></pre> <p>When Fruits is clicked then the list below is shown:</p> <pre><code> Bananans Grapes Apples </code></pre> <p>When cookies is clicked then the list below is shown:</p> <pre><code> Oreo's Choc Chip </code></pre> <p>Code for first level list:</p> <pre><code>public class MainActivity extends SherlockActivity { SimpleAdapter simpleAdpt; List&lt;Map&lt;String, String&gt;&gt; list1 = new ArrayList&lt;Map&lt;String,String&gt;&gt;(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initList(); ListView lv = (ListView) findViewById(R.id.listView); simpleAdpt = new SimpleAdapter(this, list1, android.R.layout.simple_list_item_1, new String[] {"list1"}, new int[] {android.R.id.text1}); lv.setAdapter(simpleAdpt); } private void initList() { // We populate the planets list1.add(creatList1("list1", "Fruits")); list1.add(creatList1("list1", "Cookies")); } private HashMap&lt;String, String&gt; creatList1(String key, String name) { HashMap&lt;String, String&gt; list = new HashMap&lt;String, String&gt;(); list.put(key, name); return list; } /** * A placeholder fragment containing a simple view. */ public static class PlaceholderFragment extends Fragment { public PlaceholderFragment() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_main, container, false); return rootView; } } } </code></pre>
 

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