title: How to create a single activity without headers
body: <p>I'm developing an application where I set up an activity for the settings.
  I tried to use the android studio template to create an activity setting but the structure of the code that is being created is too complex.
  Can anyone tell me how to create a settingsActivity similar to the android studio template but without headers?
  Thanks in advance for the answer.
  Greetings.</p>