Merge "Fix tuner sub-screens attach" into oc-dev am: 2579ec1b

    }

    public static class SubSettingsFragment extends PreferenceFragment {

        private PreferenceScreen mParentScreen;

        @Override

        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {

            setPreferenceScreen((PreferenceScreen) ((PreferenceFragment) getTargetFragment())

                    .getPreferenceScreen().findPreference(rootKey));

            mParentScreen =

                    (PreferenceScreen) ((PreferenceFragment) getTargetFragment())

                            .getPreferenceScreen().findPreference(rootKey);

            PreferenceScreen screen =

                    getPreferenceManager().createPreferenceScreen(

                            getPreferenceManager().getContext());

            setPreferenceScreen(screen);

            // Copy all the preferences over to this screen so they go into the attached state.

            while (mParentScreen.getPreferenceCount() > 0) {

                Preference p = mParentScreen.getPreference(0);

                mParentScreen.removePreference(p);

                screen.addPreference(p);

            }

        }

        @Override

        public void onDestroy() {

            super.onDestroy();

            // Copy all the preferences back so we don't lose them.

            PreferenceScreen screen = getPreferenceScreen();

            while (screen.getPreferenceCount() > 0) {

                Preference p = screen.getPreference(0);

                screen.removePreference(p);

                mParentScreen.addPreference(p);

            }

        }

    }