/**
* Hides the route bar, which implicitly means that all locations are gone. Thus, just to be safe,
* clears the data structures again.
*/
public void close() {
routeFlow2.clear();
routeFlow2.setVisible(false);
title.setText("沒有內容啦");
// UserInfoViewController.message("There are currently no locations on the map. Please start
// typing one.");
}
