如何在kivy中创建自动完成文本输入

from kivy.app import App
from kivy.uix.textinput import TextInput
from kivy.uix.dropdown import DropDown
from kivy.uix.button import Button

class AutoCompleteTextInput(TextInput):
    def __init__(self, **kwargs):
        super(AutoCompleteTextInput, self).__init__(**kwargs)
        self.dropdown = DropDown()

    def on_text(self, instance, value):
        # 在这里实现自动完成逻辑
        self.dropdown.dismiss()
        self.dropdown.clear_widgets()
        if len(value) > 0:
            # 根据输入的文本值进行匹配或查询
            suggestions = self.get_suggestions(value)
            for suggestion in suggestions:
                btn = Button(text=suggestion, size_hint_y=None, height=30)
                btn.bind(on_release=lambda btn: self.select_suggestion(btn.text))
                self.dropdown.add_widget(btn)
            self.dropdown.open(self)

    def get_suggestions(self, value):
        # 根据输入的文本值获取建议列表
        # 可以从数据库、API或本地数据源中获取
        # 返回一个包含建议文本的列表
        return ['suggestion1', 'suggestion2', 'suggestion3']

    def select_suggestion(self, suggestion):
        # 选择建议并将其设置为文本输入框的值
        self.text = suggestion

class AutoCompleteApp(App):
    def build(self):
        auto_complete_text_input = AutoCompleteTextInput()
        return auto_complete_text_input

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