W jaki sposób po przyjściu danych ze streamingu wymusić odświeżenie widoku w kivy? Poniższy kod działa, widać wszystkie printy, tablica zmienia zawartość ale nie wiem jak wymusić odświeżenie aby nowy wpis pojawił się w recycleview. Próbowałem Clock.schedule
, próbowałem w metodzie recycle_view_list
przypisać nowe dane przez self.ids.requests_recycle_view.data = listFromStream
ale nic się nie wyświetla.
main.py
from kivy.config import Config
Config.set('graphics', 'multisamples', '0')
from kivy.app import App
from kivy.lang.builder import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
import pyrebase
from kivy.properties import ListProperty
config = {
"apiKey": "String",
"authDomain": "String",
"databaseURL": "String",
"projectId": "String",
"storageBucket": "String",
"messagingSenderId": "String"
};
firebase = pyrebase.initialize_app(config)
db = firebase.database()
Builder.load_file('kv/main.kv')
#-------------------------------------------------------------ScreenManager
class ScreenManagement(ScreenManager):
pass
#--------------------------------------------------------------RequestScreen
class RequestScreen(Screen):
requests_tab = ListProperty()
def __init__(self, **kwargs):
super().__init__(**kwargs)
def recycle_view_list(self, listFromStream):
print("recycle_view_list", listFromStream)
self.requests_tab = listFromStream
#self.ids.requests_recycle_view.data = listFromStream
@classmethod
def setRequestTab(cls, tab):
print("setRequestTab", tab)
cls.recycle_view_list(RequestScreen ,tab)
# ------------------------------------------------------------stream_handler
def stream_handler(message):
print(message["event"]) # put
print(message["path"]) # /-K7yGTTEp7O549EzTYtI
print(message["data"]) # {'title': 'Pyrebase', "body": "etc..."}
pyreMessage = [{'text': message["data"]}]
RequestScreen.setRequestTab(pyreMessage)
db.child("Requests").stream(stream_handler)
#---------------------------------------------------------------StreamApp
class StreamApp(App):
def build(self):
sm = ScreenManagement()
sm.add_widget(RequestScreen(name="Bajot II"))
return sm
if __name__ == '__main__':
StreamApp().run()
main.kv
#main.kv
#:import FadeTransition kivy.uix.screenmanager.FadeTransition
<ScreenManagement>:
transition: FadeTransition()
RequestScreen:
<CustLabel@Label>
halign: 'right'
valign: 'middle'
width: 80
<RequestScreen>
name: "RequestScreen"
requests_tab: requests_recycle_view.data
BoxLayout:
#size_hint_y: None
RecycleView:
id: requests_recycle_view
viewclass: 'CustLabel'
#data: root.requests_tab
RecycleBoxLayout:
spacing: 15
default_size: 100, dp(25)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'