刷新Kivy中数据更改的回收视图

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.recycleview import RecycleView
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.label import Label

# 创建自定义的回收视图数据适配器类
class MyRecycleAdapter(RecycleDataViewBehavior, Label):
    def refresh_view_attrs(self, rv, index, data):
        # 在数据更改时刷新视图
        self.text = data['text']
        return super().refresh_view_attrs(rv, index, data)

# 创建自定义的回收视图类
class MyRecycleView(RecycleView):
    def __init__(self, **kwargs):
        super(MyRecycleView, self).__init__(**kwargs)
        self.data = [{'text': str(x)} for x in range(100)]  # 数据源
        self.adapter = MyRecycleAdapter()  # 创建适配器实例
        self.refresh_from_data()  # 刷新视图

    def refresh_from_data(self):
        self.clear_widgets()
        self.add_widget(self.adapter)

# 使用Builder加载Kivy语法
Builder.load_string('''
<MyRecycleAdapter>:
    viewclass: 'Label'
    RecycleBoxLayout:
        default_size_hint: 1, None
        default_size: None, dp(56)
        size_hint_y: None
        height: self.minimum_height
        orientation: 'vertical'

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

# 创建一个Kivy应用
class MyApp(App):
    def build(self):
        return MyRecycleView()

# 运行应用
if __name__ == '__main__':
    MyApp().run()