android.app.ActivityThread is missing in current sdk
<p>i find some examples in the web which uses android.app.ActivityThread but I can't find it in my android sdk installation(2.1 and 2.2) neither on the <a href="http://developer.android.com/reference/packages.html" rel="nofollow">android sdk webpage</a></p>

<p>Was the ActivityThread removed from current sdk? If so, is there a alternative?</p>

<p>Thanks
Thomas</p>
