Android Question Change hamburger to back arrow on sub pages?

[tsteward]

In my main page I use a drawer for a menu and have the following code in Page Appear which gives me the hamburger in the top left corner.
When I navigate to another page it should change to a Back arrow but remains a hamburger. Even though when touched it does go back

How do I get it to appear as a back arrow on sub pages please.

Private Sub B4XPage_Appear
    #if b4a
    B4XPages.GetManager.ActionBar.RunMethod("setDisplayHomeAsUpEnabled", Array(True))
    Dim bd As BitmapDrawable
    bd.Initialize(HamburgerIcon)
    B4XPages.GetManager.ActionBar.RunMethod("setHomeAsUpIndicator", Array(bd))
    SetActionBarCustomViewState(False)
    Dim cs As CSBuilder
    Dim tmpuser As String = Options1.Get("UserName")
    If tmpuser = "Username" Or tmpuser.Length < 1 Then
        cs.Initialize.Color(xui.Color_Red).Append("Welcome ").PopAll
    Else
        cs.Initialize.Color(xui.Color_Red).Append("Welcome " & tmpuser).PopAll
    End If
    SetSubtitle(cs)  'subtitle can be text also
    #end if
    
End Sub

 

[Erel]

Check this thread: https://www.b4x.com/android/forum/threads/b4x-b4xpages-hamburger-button.119049/#post-744610