Kivy RecycleView:获取当前视图中所有数据项的索引

from kivy.uix.recycleview import RecycleView
from kivy.uix.label import Label

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

    def create_view_adapter(self):
        return MyViewAdapter(data=self.data)

class MyViewAdapter(RecycleView.ViewAdapter):
    def __init__(self, **kwargs):
        super(MyViewAdapter, self).__init__(**kwargs)

    def get_view(self, index):
        return Label(text=self.data[index]['text'])

    def get_view_size(self, index):
        return 100, 30

def get_visible_item_indexes(recycle_view):
    visible_views = recycle_view.view_adapter.get_visible_views()
    item_indexes = list(visible_views.keys())
    return item_indexes