New Activity after G+ Login

Hi. I have build a google+ login. after the login, i want that a new layout/activity will be shown. when i create a new layout with sample text, it works find. but when i create a new navigation drawer activity, i get many error when i setvontentview to the new layout_activity. but only with the new main activity. the navigation drawer build three new layout files, like allways, and when i setcontent.... to one of the other files, i get only a blank screen, but no errors.

can someone help?