title: Should I create an activity for each screen?
body: <p>I will start with an example... If you go to <em>Settings > Applications > Manage applications</em>, a new screen will open with a list of the installed applications: if you click on any application of the list, it will open a new screen containing information about the application.</p>
  
  <p>Well, some settings of my application must be managed through a list, and this list should behave like the above example. I have already created a <code>PreferenceActivity</code> with some categories, each of which has some items: when I click on one of these items, I would like it to open a new screen where the new data is placed on a list, just like the list of the applications of the above example. Moreover, when I click on any entry of this list, it will open a new screen in order to set some data.</p>
  
  <p>How should I proceed? Should I create an activity for each screen?</p>