Как обновить данные в одном из Screen после загрузки новых данных в kivymd?

Question

[Diyar]

from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivymd.app import MDApp
from kivy.core.window import Window
from kivymd.uix.textfield import TextInput
from kivymd.uix.button import MDFillRoundFlatButton
import sqlite3
from kivymd.uix.list import OneLineListItem
from kivy.clock import Clock


con = sqlite3.connect('my.db')
c = con.cursor()
c.execute("""CREATE TABLE IF NOT EXISTS post(
    title TEXT NOT NULL,
    main_text TEXT NOT NULL)""")
con.commit()
con.close()
    
        
Window.size = (412, 915)
Builder.load_string("""



<ScreenManager>:
    MenuScreen:  
    AddPost:
    ReadPost: 
        id: read_post

<MenuScreen>:
    MDBoxLayout:
        orientation: "vertical"
        
        MDToolbar:
            type: "top"
            title: "Скорочтение"
            
        MDBoxLayout:
            
            orientation: "vertical"
            padding:200, 550, 200, 550
            spacing:25
            
            MDRoundFlatIconButton:
            
                text: "Добавить запись"   
                width: root.width*0.6
                font_size: 40
                icon: "plus"
                on_release: root.manager.current = 'add'
                
                
            MDRoundFlatIconButton:
            
                text: "Читать на скорость"   
                width: root.width*0.6
                font_size: 40
                icon: "clock"
                on_press: root.manager.current = 'read'
                
                
            MDRoundFlatIconButton:
            
                width: root.width*0.6
                font_size: 40
                icon: "eye"
                text: "Внимательность"    
                
            
    
<AddPost>:
    MDBoxLayout:
        orientation: "vertical"
        MDToolbar:
            type: "top"
            title: "Добавить запись"
            left_action_items: [['keyboard-backspace', lambda x: app.set_screen("menu")]]
            
        MDBoxLayout:
            orientation: "vertical"
            padding:100, 200, 100, 600
            spacing:45
            
            MDTextField:
                id: title
                hint_text:"Описание"
                pos_hint:{'center_x':.5,'center_y':.5}
                font_size:"18dp"
                line_color: "white"
                width: 350
                on_touch_down: if self.collide_point(*args[1].pos): self.text = ""
            MDTextField:
                id: main_text
                hint_text:"Основной текст"
                pos_hint:{'center_x':.5}
                font_size:"18dp"
                line_color: "white"
                multiline: True
                size_hint: (1.0, None)
                max_height: 500
                on_touch_down: if self.collide_point(*args[1].pos): self.text = ""
            MDRoundFlatButton:
                width: root.width * 0.75
                font_size: "18dp"
                text: "Сохранить"   
                halign: "center"
                on_press: app.submit(root.ids.title.text, root.ids.main_text.text)
                
            

<ReadPost>:
    ScrollView:

        
    MDBoxLayout:
        
        orientation: "vertical"
        MDToolbar:
            type: "top"
            title: "Читать текст"
            left_action_items: [['keyboard-backspace', lambda x: app.set_screen("menu")]]
        # MDBoxLayout:
        #     orientation: "vertical"
        ScrollView:

            MDList:
                id: container
            
                
"""
)

class MenuScreen(Screen):
    
    pass

class AddPost(Screen):  
    
    pass
    
    
class ReadPost(Screen):
    
    def __init__(self, **kw):
        
        
        Clock.schedule_once(self.create_list)
        super().__init__(**kw)
        
    def create_list(self, *args):
        con = sqlite3.connect("my.db")
        c = con.cursor()
        data = """SELECT * FROM post"""
        c.execute(data)
        post = c.fetchall() 
        print(post)
        for i in post:
            self.ids.container.add_widget(
                OneLineListItem(text=f"{i}")
            )
        con.close()
        print("das")
    

        
    
        







class MainApp(MDApp):
        
            
    def set_screen(self, name):
        
        self.root.current = name
        print("ss")
    
    def build(self):
        
        sm = ScreenManager()
        sm.add_widget(MenuScreen(name="menu"))
        sm.add_widget(AddPost(name="add"))
        sm.add_widget(ReadPost(name="read"))
        return sm
        
   
        
    
    def submit(self, title, main_text):
        if title == '' or main_text == '':
            print('eror')
        else: 
            con = sqlite3.connect("my.db")
            c = con.cursor()
            c.execute("""INSERT INTO post(
                title, main_text)
                VALUES (?,?);""",
                (title, main_text))
            con.commit()
            con.close()
            print("Э")
        
    

        


MainApp().run()

Дело в том что в окне AddPost я загружаю данные в бд, а в окне ReadPost. нужно добавить новый List который я загрузил, каким способом можно сделать?