title: How to convert a SparseArray to ArrayList?
body: <p>I know this is possible:</p>
  
  <pre><code>Map&lt;Integer, Object&gt; map = new HashMap&lt;Integer, Object&gt;();
  ...
  List&lt;Object&gt; arrayList = new ArrayList&lt;Object&gt;(map.values());
  </code></pre>
  
  <p>But according to android <code>SparseArray&lt;Object&gt;</code> is more efficient, hence, I am wondering if it is possible to convert a <code>SparseArray</code> to <code>Arraylist</code>.</p>
  
  <p>Much appreciate any input.</p>