Sample for moving between views

routes.py

import flet
from flet import AppBar
from flet import ElevatedButton
from flet import Icon
from flet import IconButton
from flet import Page
from flet import Text
from flet import View
from flet import icons


class FirstPage(View):
    def __init__(self, page):
        super().__init__(
            '/',
            [
                AppBar(title=Text("Flet app"), leading=Icon(icons.HOME)),
                ElevatedButton("Go to settings", on_click=self.open_settings),
            ]
        )

        self.page = page

    def open_settings(self, e):
        self.page.views.append(
            View(
                "/settings",
                [
                    AppBar(
                        title=Text("Settings"),
                        leading=IconButton(icon=icons.CHEVRON_LEFT, on_click=self.pop_settings)
                    ),
                    Text("Settings"),
                ],
            )
        )
        self.page.update()

    def pop_settings(self, e):
        self.page.views.pop()
        self.page.update()


def main(page: Page):
    page.title = "Routes Example"
    page.views.append(FirstPage(page))
    page.update()

flet.app(target=main)