Add up button to PreferenceScreen
android, android-preferences, java
Solution
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.
Problem
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.