title: how to start a new activity in one page on clicking a button in other page
body: <p>I have created an remote controller app in android. In the main page,there are few keys which on pressing sends a signal from the mobile. First of all it asks for a configuration file and parse the file and save the control options in a spinbox. When a particular key is pressed he corresponding control from the spinbox is selected and the signal is sent. 
  In next screen i would like to have only the keys which on pressed should select the control in the main screen and it should send the signal. In short i should be able to access all the elements in my main_screen.java.</p>