title: Treemap and List View
body: <p>Hy!</p>
  
  <p>I have a Treemap  and i want to set all strings in the map to the ListView</p>
  
  <p>Code:</p>
  
  <pre><code>TreeMap&lt;String, Integer&gt; map = json.getChannels(lv.getItemAtPosition(arg2).toString());
  ListView lv2 = new ListView(Channellist.this);
  Set st = map.keySet();
  lv2.setAdapter(new ArrayAdapter&lt;String&gt;(Channellist.this,android.R.layout.simple_expandable_list_item_1,st));
  </code></pre>
  
  <p>My Problem is that the ArrayAdapter doesn't support a Set.</p>
  
  <p>Are there any Solutions?</p>
  
  <p>THX</p>