Add up button to PreferenceScreen

Question

I can't figure out how I would go about implementing an up button in a PreferenceScreen. An up button displays a caret in your action bar next to your app icon that allows you to navigate the app's hierarchy, more info here.

I have a Preference Fragment that displays when my main activity is opened and I can get the up button to display by adding this line " getActionBar().setDisplayHomeAsUpEnabled(true);":

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getActionBar().setDisplayHomeAsUpEnabled(true);
    getFragmentManager().beginTransaction()
    .replace(android.R.id.content, new SettingsFragment())
    .commit();

This causes the up button to display in the Preference Fragment, but I only want to show the up button when one of my PreferenceScreens is opened, allowing navigation to the main PreferenceFragment.

My app is analogous to the main settings app. Only the child screens, like Location Access, that opens from the main Settings app has the up arrow.

Answer 1

If your complete application is a preferences screen, then you can make your main activity a PreferenceActivity and the sub-levels can be fragments. This way the 'up' functionality is going to be by default what you are looking for.