screens.py 文件源码

def _build_main_box(self):
        main_box = BoxLayout(orientation='vertical')
        back_button = Button(
            text="Back",
            font_size=30,
            size_hint=(0.15, 0.15),
        )
        back_button.bind(on_release=self.handle_back_button)
        main_box.add_widget(back_button)
        main_box.add_widget(self._build_event_list())
        return main_box