How can a PreferenceActivity use a custom preference file

Question

My first attempt at preferences was without knowledge of PreferenceActivity. So now I have an app that stores all user preferences in a specific preference file.

I want to migrate to using a PreferenceActivity but I also want my users to keep their preferences.

Is there a way to tell my PreferenceActivity to use that specific file for all preferences?

Answer 1

It may be too late to post this but you can find a nice solution here

• How to make PreferenceActivity use non-default SharedPreferences

You set the name of the default shared preferences file beforehand like this:

public class MyPreferencesActivity extends PreferenceActivity {     protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);           PreferenceManager prefMgr = getPreferenceManager();          prefMgr.setSharedPreferencesName("my_preferences");          prefMgr.setSharedPreferencesMode(MODE_WORLD_READABLE);           addPreferencesFromResource(R.xml.preferences);     } } 

I hope this helps somebody.

Regards.

Answer 2

You could read all the preferences at the beginning of your app, and then store them in the Preferences using

Editor e = PreferenceManager.getDefaultSharedPreferences(getBaseContext()).edit(); e.putBoolean("yourPreference", true); e.putString("yourOtherPreference", "This is the Value"); ... e.commit(); 

I hope that helps