title: Save button removes activity
body: <p>I have an activity which has various settings the user can choose. There's a 'Save Settings' button on the activity and when pressed saves the user settings. At the moment, once saved the user then has to press the back button to take them back to the last activity. </p>
  
  <p>How would I get rid of the settings screen when the save button is pressed rather than the user having to click the back button after?</p>