No. If it's not working as expected you can try with root if you are using B4XPages !Is it mandatory with IPad to have the low Bar Buttons visible to use this command ?
I was like you.No, I never had time to switch to B4XPages
Private Sub Button1_Click
DocumentPicker.InitializeImport("picker", Array("public.text"))
DocumentPicker.Show(<Your Page Object>, Sender)
Wait For Picker_Complete (Success As Boolean, URLs As List)
If Success Then
Log(File.ReadString(URLs.Get(0), ""))
End If
End Sub
It should work with the navigation bar buttons as well.