Manager:
    Screen_one:
    Screen_two:
    Screen_three:

<Screen_one>:
    GridLayout:
        rows: 2
        size: root.size

        ActionBar:
            background_color: 0, .4, .7, 1
            size_hint_y: None
            height: '35dp'
            ActionView:
                use_separator: True
                ActionPrevious:
                    title: 'Menu:'
                    with_previous: False
                ActionOverflow:
                ActionButton:
                    important: True
                    text: 'Print'