Android Question Hide/Show a view when onScroll from a ListView is called

[Walter Adriano da Silva]

Is there a way hide or show a View or the ToolBar through ListView.onScroll method()?

Following an example

This example use a RecyclerView, but I need do this with a ListView

Example source: https://github.com/mzgreen/HideOnScrollExample

 

[LucaMs]

Uhm...

ListView has not an event on scrolling.

You could use CustomListView and set the height of the label "HideOnScrollExample" based on the position you get in ScrollChanged event of the scrollview.

 

[LucaMs]

You should add this routine to CustomListView:

Private Sub sv_ScrollChanged(Position As Int)
    If SubExists(CallBack, EventName & "_ScrollChanged") Then
        CallSubDelayed2(CallBack, EventName & "_ScrollChanged", Position)
    End If
End Sub

so you can handle the ScrollChanged event in your Activity.

 

[inakigarm]

Didn't Know that SubExists exists !!

Seems that onscroll exists as a event in Android native view (http://developer.android.com/reference/android/widget/AbsListView.OnScrollListener.html Listview inherits from AbsListview)

Do you Know why This event isn't in listview events ?

 

[LucaMs]

I don't know.

However:

1) I don't like that way of disappearing of the label
2) I think that to get the same effect, you should put the label in a second scrollview and synchronize the two scrolling.

 

[Walter Adriano da Silva]

I will try the CustomListView.

Thx Luca