无法从主UI * ANDROID *启动listview活动

Okay. I have a main UI with buttons on it. When a user clicks one of the buttons it should bring up a listview created by a separate activity. When I run this activity by itself, as it's own app, it's works just fine, but when I try to use it as component of a larger app, it shuts the app down. Here's the code for the activity I'm trying to call:Okay. I have a main UI with buttons on it. When