if i set the ToolBarVisible to false in the designer it will show it when the app will start only if i set in:
B4X:
Private Sub Application_Start (Nav As NavigationController)
NavControl = Nav
Page1.Initialize("Page1")
NavControl.NavigationBarVisible = False
NavControl.ToolBarVisible = False
NavControl.ShowPage(Page1)
Page1.RootPanel.LoadLayout("menu")
list1.Initialize
list1 = File.ReadList(File.DirAssets,"itemlist.txt")
End Sub