I try to put a group of two checkboxes in each row in RecycleView. But if I click one checkbox, some other checkboxes is impacted. As the following pictures:

click row 1

row 13 is impacted

So are the row 25, 37 ... the following is the code

main.py:

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout

class Root(BoxLayout):
    def __init__(self, **kwargs):
        super(Root, self).__init__(**kwargs)
        self.rv.data = [{'value': str(x)} for x in range(100)]

class MyApp(App):
    def build(self):
        return Root()

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

my.kv:

<Row@BoxLayout>:
    canvas.before:
        Color:
            rgba: 0.5, 0.5, 0.5, 1
        Rectangle:
            size: self.size
            pos: self.pos
    value: ''

    orientation: 'horizontal'
    Label:
        text: root.value
        size_hint:0.45, 1
    CheckBox:
        group: root.value
        size_hint:0.05, 1
        state: 'down'
    CheckBox:
        group: root.value
        size_hint:0.05, 1
<Root>:
    rv: rv
    RecycleView:
        id: rv
        viewclass: 'Row'
        RecycleBoxLayout:
            default_size: None, dp(56)
            default_size_hint: 1, None
            size_hint_y: None
            height: self.minimum_height
            orientation: 'vertical'

It's really simple code, but I don't know why. Could you please help?

kivy is 1.10.0

the root cause is that the viewclasses are recycled for reusing. We can derive the viewclass from RecycleDataViewBehavior(have to read the code). Implement refresh_view_attrs. Maybe add the state of checkboxes into data of recycleview. Can refer to the example of SelectableLabel in recycleview/init.py.