Add NavigationBarState
Add NavigationBarState

REXLabsInc/AMScrollingNavbar,msdgwzhy6/AMScrollingNavbar,tuanphung/AMScrollingNavbar,bestwpw/AMScrollingNavbar,JeeLiu/AMScrollingNavbar,hulu001/AMScrollingNavbar,machelix/AMScrollingNavbar,jwolkovitzs/AMScrollingNavbar,andreamazz/AMScrollingNavbar,foxsofter/AMScrollingNavbar,ajijoyo/AMScrollingNavbar,sunfei/AMScrollingNavbar,jwolkovitzs/AMScrollingNavbar,andreamazz/AMScrollingNavbar,paterson/AMScrollingNavbar,sunfei/AMScrollingNavbar,foxsofter/AMScrollingNavbar,msdgwzhy6/AMScrollingNavbar,tuanphung/AMScrollingNavbar,cnbin/AMScrollingNavbar,ajijoyo/AMScrollingNavbar,JeeLiu/AMScrollingNavbar,bestwpw/AMScrollingNavbar,hulu001/AMScrollingNavbar,ajijoyo/AMScrollingNavbar,cnbin/AMScrollingNavbar,tuanphung/AMScrollingNavbar,machelix/AMScrollingNavbar,machelix/AMScrollingNavbar,sunfei/AMScrollingNavbar,paterson/AMScrollingNavbar,cnbin/AMScrollingNavbar,REXLabsInc/AMScrollingNavbar,foxsofter/AMScrollingNavbar,msdgwzhy6/AMScrollingNavbar