how to close activity without actually finishing?
<p>I want to:</p>

<pre><code>open 1, 2, 3 activities
1 &gt; 2 &gt; 3  

back to #2
1 &gt; 2

open #4 activity
1 &gt; 2 &gt; 4

back to #2
1 &gt; 2

restore #3 activity
1 &gt; 2 &gt; 3
</code></pre>

<p>"Restore" means open previously closed activity without re-creating. 
How can i do that?</p>

<p>Thanks!</p>
