Kivy CheckBoxes in RecycleView

recycle_checkboxes.py

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.recycleview import RecycleView
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.properties import BooleanProperty

KV = '''
<Row>:
    active: cb.active
    text: ""
    Label:
        text: root.text
    CheckBox:
        id: cb
        active: root.active
        on_release: root.store_checkbox_state()

<RV>:
    viewclass: 'Row'
    RecycleBoxLayout:
        default_size: None, dp(56)
        default_size_hint: 1, None
        size_hint_y: None
        height: self.minimum_height
        orientation: 'vertical'

BoxLayout:
    RV:
        id: rv
    Button:
        text: "Clear"
        on_release:
            rv.data = [d.update({'active': False}) or d for d in rv.data]
            rv.refresh_from_data()
            print(rv.data)
'''

class Row(RecycleDataViewBehavior, BoxLayout):
    active = BooleanProperty()
    index = 0

    def refresh_view_attrs(self, rv, index, data):
        self.index = index
        super().refresh_view_attrs(rv, index, data)

    def store_checkbox_state(self):
        rv = App.get_running_app().rv
        rv.data[self.index]['active'] = self.active
        print(rv.data)

class RV(RecycleView):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.data = [{'text': str(x), "active":False} for x in range(100)]
        App.get_running_app().rv = self

class TestApp(App):
    def build(self):
        return Builder.load_string(KV)

TestApp().run()