title: Android's ArrayAdapter - add strings listview instead of replace
body: <p>This is how I add an array to listview:</p>
  
  <pre><code>ListView my_listview = (ListView)findViewById(R.id.listView1);
  ArrayAdapter&lt;String&gt; adapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, my_array);
  my_listview.setAdapter(adapter);
  </code></pre>
  
  <p>my_array is uri of a file.</p>
  
  <p>It works well. But next next time I want to array a new array, then I don't want to replace with with new one instead add new ones to the existing ones. How can I accomplish that?</p>