How to make a window in an activity?
<p>I want to make a new window in an activity. like a popup window. I saw the source code of the Email application shipped with android OS and found this</p>

<pre><code>import com.android.internal.policy.PolicyManager
Window w = PolicyManager.makeNewWindow(mContext);
</code></pre>

<p>But I can't find such a class in the SDK.
Any idea?</p>
