在Kivy中选择后更新回收视图列表

from kivy.app import App
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.label import Label
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recyclegridlayout import RecycleGridLayout

class SelectableRecycleGridLayout(FocusBehavior, RecycleGridLayout):
    pass

class SelectableLabel(RecycleDataViewBehavior, Label):
    index = None
    selected = BooleanProperty(False)

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

    def on_touch_down(self, touch):
        if super(SelectableLabel, self).on_touch_down(touch):
            return True
        if self.collide_point(*touch.pos) and touch.is_double_tap:
            # 更新数据源并调用RecycleView的refresh_from_data()方法
            self.parent.parent.update_data(self.index)
            return True

class MyRecycleView(RecycleView):
    def __init__(self, **kwargs):
        super(MyRecycleView, self).__init__(**kwargs)
        self.data = [{'text': str(x)} for x in range(100)]

    def update_data(self, index):
        # 根据选择更新数据源
        self.data[index]['text'] = 'Selected'

        # 调用RecycleView的refresh_from_data()方法更新回收视图列表
        self.refresh_from_data()

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

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