hello i make app with speechrecognize and kivy but when i use app i cant use microphone
i do so many things but it doesn’t work corctly
here is my code :

import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.clock import Clock
from kivy import platform
import speech_recognition as sr
import threading

if platform == "android":
    from android.permissions import request_permissions, Permission, check_permission  # pylint: disable=import-error # type: ignore
    request_permissions([Permission.INTERNET,Permission.RECORD_AUDIO])


class SpeechApp(App):
    def build(self):
        layout = BoxLayout(orientation='vertical')
        
        self.label = Label(text="Listening")
        self.button = Button(text="Start")
        self.button.bind(on_press=self.start_listening)
        
        layout.add_widget(self.label)
        layout.add_widget(self.button)
        
        threading.Thread(target=self.recognize_speech).start()
        
        return layout

    def recognize_speech(self):
        recognizer = sr.Recognizer()
        with sr.Microphone() as source:
            while True:
                self.label.text = "Listening"
                audio = recognizer.listen(source)
                try:
                    text = recognizer.recognize_google(audio, language='fa-IR')
                    if "کمک" in text:
                        self.update_label("recognize help")
                    else:
                        self.update_label(f"recognize: {text}")
                except sr.UnknownValueError:
                    self.update_label("not recognize")
                except sr.RequestError as e:
                    self.update_label(f"خطا در ارتباط با سرویس تشخیص گفتار: {e}")

    def start_listening(self, instance):
        threading.Thread(target=self.recognize_speech).start()

    def update_label(self, text):
        def update(dt):
            self.label.text = text
        Clock.schedule_once(update)

if __name__ == '__main__':
    SpeechApp().run()

hello i make app with speechrecognize and kivy but when i use app i cant use microphone
thank you for your answers
and you for your help