B4J Tutorial [Web][SithasoDaisy] How to create a sticky Bottom Navigation Bar & navigate your app pages

Hi Fam

Your app can have a bottom navigation which will help you navigate from one page to another. The navigation bar can be linked to the drawer of your app. This bottom navigation bar will be available across your app and you will be able to navigate to each page.

SDBottomNavigation.gif


1. Ensure that in the baselayout, the "Has BottomNav" property is checked. When you app runs a bottom navigation bar named "appbottomnavbar" will be created.
2. In Process_Globals of your app, define the BottomNav component. This should be in pgIndex

B4X:
Private appbottomnavbar As SDUIBottomNav            'ignore

3. Then build up your Bottom Nav Bar. We will build ours by adding page links to it.
3.1 We have added this sub call to pgIndex.Initialize

B4X:
'create the bottom nav content
    CreateDrawerBottomNav

3.2 We added this sub to pgIndex
B4X:
Sub CreateDrawerBottomNav
    'get the footer inside the drawer
    appbottomnavbar = appdrawer.BottomNav
    'turn off animation
    appbottomnavbar.animate = False
    'add links to the various pages
    appbottomnavbar.AddItemPage(pgHome)
    appbottomnavbar.AddItemPage(pgServices)
    appbottomnavbar.AddItemPage(pgContactUs)
End Sub

4. In the code where the menu items are clicked in the drawer, we add code to "sync" the clicked page link in the drawer with the bottom nav bar. This should be done before the app.ShowPage call

B4X:
'ensure we sync the clicked page to the bottom nav
    appbottomnavbar.ActivePage = item

5. Each time an item in the bottom navigation is clicked, we want to open the respective page in our app

B4X:
Private Sub appbottomnavbar_Click (item As String)
    'the item starts with page_
    If app.ShowPage(item) Then Return
    '
    Select Case item
        
    End Select
End Sub

PS: In the attached example, the images have been removed.
 

Attachments

  • SDMultiUserBottomNav.zip
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