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Question

我正在与 Kivy 一起开发日历程序。我的问题出在 print_appointment_to_label 函数中。我在函数末尾写了appointment_label.text =appointment_name_file_content，但标签仅在我重新启动程序时才更新。如果您想知道 label_id_file_content 代表“1jal”，即标签 id。谢谢你的帮助朱利叶斯Python：# diable multitouchfrom kivy.config import ConfigConfig.set('input', 'mouse', 'mouse,multitouch_on_demand')from kivy.app import Appfrom kivy.uix.screenmanager import Screen,ScreenManagerfrom kivy.lang.builder import Builderfrom kivy.uix.popup import Popupfrom kivy.uix.floatlayout import FloatLayoutfrom kivy.clock import Clockclass screenmanager(ScreenManager):    passclass PopupContent(FloatLayout):    def store_appointment_name(self):        appointment_name = self.ids.appointment_name.text        with open("appointment_name_file","w") as appointment_name_file:            appointment_name_file.write(appointment_name)        with open("label_id_file","r") as label_id_file:            label_id_file_content = label_id_file.read()        #check month        if "ja" in label_id_file_content:            Ja = JanuaryWindow()            Ja.__init__()class MonthWindow(Screen):    passclass JanuaryWindow(Screen):    def __init__(self, **kwargs):        super(JanuaryWindow, self).__init__(**kwargs)        Clock.schedule_once(self.print_appointment_to_label)    def print_appointment_to_label(self,dt):        with open("appointment_name_file", "r") as appointment_name_file:            appointment_name_file_content = appointment_name_file.read()        with open("label_id_file", "r") as label_id_file:            label_id_file_content = label_id_file.read()        appointment_label = self.ids[label_id_file_content]        appointment_label.text = appointment_name_file_content

Answer 1

您的安排不正确，以下说法： Clock.schedule_once(self.print_appointment_to_label) 应该是： Clock.schedule_once(self.print_appointment_to_label, .5)