// Save preferences: scroll position, selected tab, expanded buildings
@Override
public void onPause() {
super.onPause();
SharedPreferences settings = getPreferences(MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
// Save last tab
editor.putInt("lastTab", curTab);
// Save current expanded buildings to be retrieved later
editor.putStringSet("lastNearbyExpandedBuildings", nearbyExpandedBldgs);
editor.putStringSet("lastAllExpandedBuildings", allExpandedBldgs);
// Save list position (index & top) in each tab
int curPos[] = sm.getCurPos();
int nearPos[] = sm.getNearPos();
int allPos[] = sm.getAllPos();
editor.putInt("curPosIndex", curPos[0]);
editor.putInt("nearPosIndex", nearPos[0]);
editor.putInt("allPosIndex", allPos[0]);
editor.putInt("curPosTop", curPos[1]);
editor.putInt("nearPosTop", nearPos[1]);
editor.putInt("allPosTop", allPos[1]);
// Note: Only those buildings still nearby should become expanded
// Since the fragments all call getBuildings before re-populating.
// So only those still in the getBuildings list will be able to be
// re-expanded!
editor.commit();
}
public void restorePreferences() {
// Restore last tab
SharedPreferences settings = getPreferences(MODE_PRIVATE);
curTab = settings.getInt("lastTab", 0);
// Restore last expanded buildings (by tab)
nearbyExpandedBldgs =
settings.getStringSet("lastNearbyExpandedBuildings", new HashSet<String>());
allExpandedBldgs = settings.getStringSet("lastAllExpandedBuildings", new HashSet<String>());
// Restore position in each tab
sm.setCurPos(settings.getInt("curPosIndex", 0), settings.getInt("curPosTop", 0));
sm.setNearbyPos(settings.getInt("nearPosIndex", 0), settings.getInt("nearPosTop", 0));
sm.setAllPos(settings.getInt("allPosIndex", 0), settings.getInt("allPosTop", 0));
}