如何使用kivymd中的函数更改列表项图标？

from kivymd.app import MDApp
from kivymd.uix.list import OneLineIconListItem
from kivymd.uix.list import IconLeftWidget

class CustomListItem(OneLineIconListItem):
    pass

class CustomListItem(OneLineIconListItem):
    def __init__(self, icon, text):
        super().__init__()
        self.text = text
        self.add_widget(IconLeftWidget(icon=icon))

class MyApp(MDApp):
    def build(self):
        # 创建一个列表
        list_view = MDList()

        # 创建自定义列表项并添加到列表中
        list_item = CustomListItem(icon="android", text="Android")
        list_view.add_widget(list_item)

        return list_view

MyApp().run()