title: Show and hide Navigation bar on tableView Scrolling
body: <p>Show and hide navigationbar while tableview scrolling,initially navigationbar is hidden.Tableview contains only one section header, when we scroll upwards the section header reaches to top but as we scroll slightly downwards status bar and navigationbar are shown animatedly pulling section header down but as the section header scrolls down navigationbar and statusbar hides.I want to achieve this scenario. I'm trying to achieve this but as navigation bar is hidden initially and bring navigation bar creates a jerking effect and same when hiding the navigationbar. Please help me out in this.</p>