Android Question How to change background color of a Spinner?

Dim jo As JavaObject = B4XComboBox1.cmbBox.Background
    jo.RunMethod("setColorFilter", Array(Colors.Blue, "SRC_ATOP")) 'you can use xui colors too

# Replace the Spinner with a B4XComboBox in the designer

# E.g. we have:
Dim sp as Spinner
Dim cmb as B4XComboBox

# Replace initialisation
sp.Clear
sp.Add("Entry 1")
sp.add("Entry 2")
# with
cmb.SetItems(Array As String("Entry 1", "Entry 2"))
# If you have a List with the data either, you can use it directly with SetItems.
# If you need the old Clear/Add thing, you can
cmb.cmbBox.Clear
cmb.cmbBox.Add("Entry")

# Since it is not possible to set the TextSize in the designer, you have to
cmb.cmbBox.TextSize = 14

# To set Visible or Enabled you have to
cmb.mBase.Visible = True
cmb.mBase.Enabled = False

# SelectedIndex is the same:
cmb.SelectedIndex = sp.SelectedIndex

# Instead of
Sub sp_ItemClick (Position As Int, Value As Object)
End Sub
#you use
Sub cmb_SelectedIndexChanged (Position As Int)
End Sub

# Since it is not possible to set the TextSize in the designer, you have to
cmb.cmbBox.TextSize = 14#