Apps Main screen

[Amon Darthir]

I have found a way to move around between different screens (xmls) but for some reason whenever i go back to one i was on previously the buttons will not work again. Ex. i have a main screen, like a contact, i click the contact and can view information. I then could push a back button and go back to the list of contacts but then i can not open another contact. i can press the buttons but there is no result. Any ideas?