Save changes to file not working on android

[a1y9]

i pick up text file and make edit on it then save it .
its working well in windows but when i build it
flet build apk -vv
and install the apk file to my Android phone and pick up a text file, it works fine, but when I make changes and save it, it tells me that it was saved successfully, but when I open the file again, I find that the saving process was not completed.
Do I need permissions on my phone?
i tried
flet build apk --template C:\Users\a\Documents\flet-build-template after install flet-build-template and edit AndroidManifest.xml

but the apk size result is 40 m and previous build was 62 m
any way when install apk file to my Android phone and open it the screen is empty

my code
`import flet as ft
import os

def main(page: ft.Page):
page.title = "Text File Editor"

def pick_file(e: ft.FilePickerResultEvent):
    if e.files:
        file_path = e.files[0].path
        with open(file_path, 'r') as file:
            content = file.read()
        text_area.value = content
        file_path_text.value = f"Selected file: {file_path}"
        save_button.disabled = False
        page.update()

def save_file(e):
    file_path = file_path_text.value.split(": ")[1]
    with open(file_path, 'w') as file:
        file.write(text_area.value)
    page.show_snack_bar(ft.SnackBar(content=ft.Text("File saved successfully!")))

file_picker = ft.FilePicker(on_result=pick_file)
page.overlay.append(file_picker)

pick_button = ft.ElevatedButton(
    "Pick a text file",
    on_click=lambda _: file_picker.pick_files(allowed_extensions=["txt"])
)

file_path_text = ft.Text("No file selected")

text_area = ft.TextField(
    multiline=True,
    min_lines=10,
    max_lines=20,
    width=600,
)

save_button = ft.ElevatedButton("Save changes", on_click=save_file, disabled=True)

page.add(
    pick_button,
    file_path_text,
    text_area,
    save_button
)

ft.app(target=main)`

[a1y9]

i think there error in my way
i think my AndroidManifest.xml need to edit i am not familiar with using of xml file
my
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <application android:label="{{ cookiecutter.project_name }}" android:name="${applicationName}" android:icon="@mipmap/ic_launcher"> <activity android:name=".MainActivity" android:exported="true" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize"> <!-- Specifies an Android theme to apply to this Activity as soon as the Android process has started. This theme is visible to the user while the Flutter UI initializes. After that, this theme continues to determine the Window background behind the Flutter UI. --> <meta-data android:name="io.flutter.embedding.android.NormalTheme" android:resource="@style/NormalTheme" /> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <!-- Don't delete the meta-data below. This is used by the Flutter tool to generate GeneratedPluginRegistrant.java --> <meta-data android:name="flutterEmbedding" android:value="2" /> </application> </manifest>
path AndroidManifest.xml
C:\Users\aym\flet-build-template{{cookiecutter.out_dir}}\android\app\src\main\AndroidManifest.xml
build command
flet build --template "C:\Users\aym\flet-build-template"

result apk file size 42 and it is empty screen
link
https://files.fm/u/gwc9bdv4bt

what abou if i want add video
is this command is right?
flet build apk --template C:\Users\aym\Documents\flet-build-template --include-packages flet_video
can i using [flet-github-action-workflows] to to build custom template and flet-video?

[a1y9]

i was used https://github.com/flet-dev/flet-build-template
but when i used flet-build-template flet tree last version
apk build done but still get permissin when install apk not working