Load/Save settings from/to database in PreferenceFragment

Question

Users can add projects in my app and I have a PreferenceFragment for settings of the projects.
This is my Fragment:

public class SettingsFragment extends PreferenceFragment {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        addPreferencesFromResource(R.xml.project_settings);
    }
}

And my Activity:

public class Settings extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getFragmentManager().beginTransaction()
            .replace(android.R.id.content, new SettingsFragment())
            .commit();        
    }
}

The availabal settings for each project are identical but the data should be saved per project (e.g. the project name). So how can I save the preferences to my sqlite database?

Answer 1

The answer is a Preference.OnPreferenceChangeListener and some magic inside the onPreferenceChange method.