Duty of savedInstanceState in Android
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4096169/onsaveinstancestate-and-onrestoreinstancestate">onSaveInstanceState () and onRestoreInstanceState ()</a>  </p>
</blockquote>



<p>Please Help me by providing proper explination for following Questions on SavedInstanceState in Android.</p>

<ol>
<li>Why SavedInstanceState is Usefull.?</li>
<li>What is the main purpose of SavedInstanceState.?</li>
<li>How and where it will be usefull .?</li>
<li>What are the alternatives to SavedInstanceState.?</li>
<li>what state it will save.?</li>
</ol>

<p>Thanks in advance..........</p>
