What is the use of systemutil in android?
<p>I want to know the use of systemutil in android.</p>

<p>Like this:</p>

<pre><code>String ringFile = sp.getString(SystemUtil.KEY_RING_TONE, null);
if(ringFile==null){
//No value, is null, do not play the bell
ringTone=null;
</code></pre>

<p>What is the use of systemutil in android?</p>
