Filepicker not working (Android apk)

[OE3JGW]

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Describe the bug

Hello,

im working on an app with flet which i build for android with flet build apk.
I want the app to have an "import database" button which perfectly works under windows, but in android (as an app, installed) the button does not open up a filepicker menu.
first i thought it might be because of the initial folder lacking permission, but i changed it to the same folder (android download folder: "/storage/emulated/0/Download") i use for a csv export button (without filepicker) which works fine because i gave permission in android. but the filepicker menu does not show up.

Code sample

Code

def import_db(e):
        def on_file_picked(result: ft.FilePickerResultEvent):
            if result.files is not None and len(result.files) > 0:
                selected_file = result.files[0].path
                try:
                    database_manager("DELETE FROM results", commit=True)

                    import_conn = sqlite3.connect(selected_file)
                    import_cursor = import_conn.cursor()

                    import_cursor.execute("SELECT * FROM results")
                    rows = import_cursor.fetchall()
                    for row in rows:
                        query = '''INSERT INTO results (id, antenna_name, url, notes, location, node_name, node_id, connection_type, address, timestamp, rssi, snr)
                                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'''
                        database_manager(query, row, commit=True)

                    import_conn.close()

                    page.overlay.append(ft.SnackBar(ft.Text("Database imported successfully!"), open=True))
                    page.update()

                except Exception as ex:
                    page.overlay.append(ft.SnackBar(ft.Text(f"Error during DB import: {str(ex)}"), open=True))
                    page.update()

        if not hasattr(page, "file_picker"):
            page.file_picker = ft.FilePicker(on_result=on_file_picked)
            page.overlay.append(page.file_picker)
            page.update()

        page.file_picker.pick_files(
            allowed_extensions=["db"],
            dialog_title="Select Database to Import",
            initial_directory=CSV_EXPORT_PATH  
        )

To reproduce

Clicking the import button does not open a dialog when using android, works with windows.

Expected behavior

dialog should open

Screenshots / Videos

Captures

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Operating System

Windows

Operating system details

Android

Flet version

0.24.1

Regression

I'm not sure / I don't know

Suggestions

No response

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Additional details

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