Android Code Snippet simple way to hide/show a TabStrip tab

If you don't need a tab temporarily, Instead of disabling it or removing it, you can simply hide it. When it's needed again, unhide it.

Show/hide a tabstrip tab:
'visible->hidden, or hidden->visible
Public Sub toggleTab(TabStrip1 As TabStrip, tabName As String) As Boolean
    For Each lbl As Label In GetAllTabLabels(TabStrip1)
        If lbl.Text=tabName Then
            lbl.Visible= lbl.Visible=False
            Return True
        End If
    Next
    Return False 'incorrect tab name provided
End Sub

Public Sub GetAllTabLabels (tabstrip As TabStrip) As List
    Dim jo As JavaObject = tabstrip
    Dim r As Reflector
    r.Target = jo.GetField("tabStrip")
    Dim tc As Panel = r.GetField("tabsContainer")
    Dim res As List
    res.Initialize
    For Each v As View In tc
        If v Is Label Then res.Add(v)
    Next
    Return res
End Sub
 
Last edited:

Mahares

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Longtime User
you can simply hide it.
1. The code you have hides the label, but you can still scroll the tab. If that is not the case, please provide a simple sample.
2. If you have images in the tabstrip labels, you cannot even hide the label.
 

toby

Well-Known Member
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Longtime User
The attached example allows you to show/hide "THE PAGE 3" by selecting menu option "Toggle tab 3".
Screen recording
 

Attachments

  • toggleTabStripTab.zip
    15.3 KB · Views: 220

Mahares

Expert
Licensed User
Longtime User
The attached example allows you to show/hide "THE PAGE 3" by selecting menu option "Toggle tab 3".
You can still scroll page3 when you toggle it to hide. Change the color of the listview in page 3 and you will see it when you left or right.
 

toby

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Licensed User
Longtime User
You can still scroll page3 when you toggle it to hide. Change the color of the listview in page 3 and you will see it when you left or right.
Your code should check if the tab to scroll to is visible before trying to scroll with following code
B4X:
Public Sub visibleTabByIndex(tabIndex As Int) As Boolean
    Dim lbl As Label=GetAllTabLabels(mytabStrip1).Get(tabIndex)
    Return lbl.Visible
End Sub

If the tab to hide is the current page, you need to scroll to another tab first.
B4X:
Public Sub toggleTabByIndex(tabIndex As Int)
    If mytabStrip1.CurrentPage=tabIndex Then
        Dim nextTabIndex As Int=(tabIndex +1) Mod lstTab.Size
        mytabStrip1.ScrollTo(nextTabIndex, True)
    End If
    Dim lbl As Label= lstTab.Get(tabIndex)
    lbl.Visible= lbl.Visible=False

End Sub
 
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