def build(self):
# App is built as a tabbed panel with three tabs:
# Navigation, Status, and Media. These allow quick
# access to the things you actually want to do in
# a car without excessive UI navigation.
tp = TabbedPanel()
tp.do_default_tab = False
tp.tab_pos = 'bottom_mid'
tp.tab_width = Window.width / 3
nav = TabbedPanelHeader(text='Nav')
status = TabbedPanelHeader(text='Status')
media = TabbedPanelHeader(text='Media')
tp.add_widget(nav)
tp.add_widget(status)
tp.add_widget(media)
#nav.content = Label(text = 'Nav system goes here')
#status.content = Label(text = 'Performance, health, and eco stats go here')
#media.content = Label(text = 'Media player goes here')
# Each tab's content is implemented in a tab above.
nav.content = KVMaps()
status.content = Performance()
media.content = MusicPlayer()
return tp
