I guess there may be a flaw in my page layout that prevents Android phones from jumping to the previous layout when pressing the back button.

[ChinaGodzilla]

video.mp4

Thanks for your time!

I give a two-part demonstration in the video, with a brief pause in between.(12-14s)

In the first demo, clicking the text of the URL link successfully jumps to the news page. Press the return key on your phone to successfully return to the previous level.

In the second demonstration, after clicking the button on the third navigation bar to enter a new page, pressing the return key on the phone does not return to the previous interface, but directly returns to the main interface of the phone (I hope to return to my program homepage ).

import flet
from flet import *
import requests
from bs4 import BeautifulSoup

Url_list = []



def Get_news():
    global Url_list
    Count = 0
    Web_text = requests.get('https://news.china.com/domestic/?x4fc.html')
    # print(Web_text.text)
    soup = BeautifulSoup(Web_text.content.decode('utf8'), 'html.parser')
    # 查找所有的标签
    news_links = soup.find_all('a')

    # 遍历每个<a>标签，输出链接和文本内容
    for link in news_links:
        Count += 1
        href_value = link.get('href')
        news_text = link.text
        # print(f"Link: {href_value}, Text: {news_text}")
        if Count > 40 and Count < 200:
            Url_list.append(news_text + '|' + href_value)


def main(page: Page):
    global Url_list
    page.title = "疼讯新闻"


    def Button_click(e):
        pass

    # ----------------------------------------提示文本款框子程序
    dlg = AlertDialog(
        title=Text('已经是最新热点',size=15,text_align=TextAlign.CENTER,), on_dismiss=lambda e: print("Dialog dismissed!"),


    )

    def Open_dlg(e):
        page.dialog = dlg
        dlg.open = True
        page.update()

    def Close_dlg(e):
        dlg_modal.open = False
        page.update()

    # -----------------------------------------

    # ----------------------------------------底部导航改变事件子程序
    def Navi_change(e):
        nav_dest = e.control.selected_index

        if nav_dest == 0:
            page.go('/')

        if nav_dest == 1:
            Open_dlg(e)



        if nav_dest == 2:
            page.go('/store')

    # ----------------------------------------注册按钮子程序

    Navi = page.navigation_bar = NavigationBar(
        destinations=[
            NavigationDestination(icon=flet.icons.HOME, label="首页"),
            NavigationDestination(icon=flet.icons.NAVIGATION, label="热点"),
            NavigationDestination(icon=flet.icons.ACCOUNT_BOX, selected_icon=flet.icons.BOOKMARK,
                                  label="我的", ),
        ], on_change=Navi_change)

    # ----------------------------------------定义全局导航栏



    def route_change(e):
        global Dialog_text
        page.views.clear()



        lv = ListView(expand=True, spacing=10)

        Get_news()

        for i in Url_list:
            List_split = str(i).split('|')
            lv.controls.append(
                Text(spans=[TextSpan(List_split[0], url=List_split[1], url_target='_self')], size=17))


        page.views.append(
            View(
                "/",
                [
                    AppBar(title=Text('疼讯新闻',weight=FontWeight.BOLD,), center_title=True, color='white', bgcolor=colors.BLUE),

                    lv,
                    Navi,


                ],
            )
        )


        if page.route == "/store":
            page.views.clear()

            # ----------------------------------------提示文本款框子程序
            dlg = AlertDialog(
                title=Text('服务器连接失败！',size=15,text_align=TextAlign.CENTER,), on_dismiss=lambda e: print("Dialog dismissed!")
            )

            def open_dlg(e):
                page.dialog = dlg
                dlg.open = True
                page.update()

            def close_dlg(e):
                dlg_modal.open = False
                page.update()

            # -----------------------------------------



            page.views.append(
                View(
                    "/",
                    [
                        AppBar(title=Text('账号注册',weight=FontWeight.BOLD,), center_title=True, color='white', bgcolor=colors.BLUE),


                        Navi,

                    ],
                )
            )
            page.views[-1].controls.append(flet.TextField(label="账号名", autofocus=True))
            page.views[-1].controls.append(flet.TextField(label="密码",password=True, can_reveal_password=True))
            page.views[-1].controls.append(flet.TextField(label="重复密码",password=True, can_reveal_password=True))
            page.views[-1].controls.append(flet.ElevatedButton("注册", on_click=open_dlg))



        page.update()

    def view_pop(e):
        page.views.pop()
        top_view = page.views[-1]
        page.go(top_view.route)


    page.on_route_change = route_change
    page.on_view_pop = view_pop

    page.go(page.route)









flet.app(main)

[ChinaGodzilla]

who can help me ，thanks

[ChinaGodzilla]

who can help me ，thanks

[ChinaGodzilla]

Any questions about my question? I need help thanks

[ChinaGodzilla]

who can help me ，thanks

[abdokhalil07]

try to write ..
if page.route == "/" or page.route == "/store":
page.views.append(
View(
"/",
[
AppBar(title=Text('疼讯新闻',weight=FontWeight.BOLD,), center_title=True, color='white', bgcolor=colors.BLUE),

                    lv,
                    Navi,


                ],
            )
        )