“Activity not found” in Android

Question

I am using the navigation-drawer template in eclipse to do a simple Android application. I have some trouble with fragment. I declared a fragment called PresenceL

Answer 1

 have you declared this activity in your AndroidManifest.xml?  

Look in your manifest and see if you have an element that has your activity registered. If not, add one.

Have a look here: http://developer.android.com/guide/topics/manifest/activity-element.html