Query about arrayadapter
<pre><code>ArrayAdapter&lt;String&gt; arrayadapter=new 

ArrayAdapter&lt;string&gt;(Sipnner_apActivity.this,android.R.layout.simple_spinner_item,arrarylist);
</code></pre>

<p>Here what is the meaning of <code>android.R.layout.simple_spinner_item</code> and why does the <code>Arrayadapter</code> class belong to <code>widget</code> class &amp; why not belong to "util" class.</p>

<p>thank you.</p>
