从另一个类更新标签

Question

我想做一个应用程序，当我按下AddTask类中的save按钮时，文本输入中的文本将直接更新到Details类中的标签，但我所做的在那里不起作用…有谁能帮我一下吗？

    
    kivy#7
    
    
    from kivy.app import App
    from kivy.uix.screenmanager import ScreenManager, Screen, FadeTransition
    from KivyCalendar import DatePicker
    from kivy.lang import Builder
    from kivy.uix.popup import Popup
    from kivy.properties import ObjectProperty
    from database import DataBase
    from database2 import DataBase2
    from kivy.uix.label import Label
    from kivy.core.window import Window
    Window.size = (300,600)
    from kivy.config import Config
    Config.set('graphics', 'resizable', '0')
    Config.set('graphics', 'width', '300')
    
    
    Builder.load_file('window.kv')
    
    
    class HalamanUtama(Screen):
        def submit (self):
            name = self.ids.TaskName.text
            self.ids.task_one.text = name
    
        def next(self):
            layout = self.ids['invoices']
            arr = db.get_data()
            for invoice in arr:
                lab1 = Label(text=invoice, size_hint_x=.35, halign='left')
                layout.add_widget(lab1)
    
    
    class AddTask(Screen):
        names = ObjectProperty(None)
        desc = ObjectProperty(None)
        deadline = ObjectProperty(None)
        reminder1 = ObjectProperty(None)
    
        def submit(self):
            if self.names.text != "" and self.desc.text != "" and self.deadline.text != "" and self.reminder1.text != "":
    
                db.add_task(self.names.text, self.desc.text, self.deadline.text, self.reminder1.text)
                self.reset()
                hu = HalamanUtama()
                return hu.next()
    
            else:
                invalidForm()
    
        def reset(self):
            self.names.text = ""
            self.desc.text = ""
            self.deadline.text = ""
            self.reminder1.text = ""
    
        def update_value(self, inst):
            """ Update textinput value on popup close """
            self.text = "%s-%s-%s" % tuple(self.cal.active_date)
            self.focus = False
            App.get_running_app().root.ids.deadline.text = self.text
    
        def show_calendar(self):
            datePicker.show_popup(1, .3)
    
    
    class DetailTask(Screen):
        def btn(self):
            shows = Delete()
    
            popupWindow = Popup(title="Delete Task", content=shows, separator_height=0, size_hint=(None, None),
                                size=(230, 230))
            popupWindow.open()
    
    
    class UncompletedExam(Screen):
        def next(self):
            layout = self.ids['idk']
            arr = db2.get_data()
            for Idk in arr:
                lab2 = Label(text=Idk, size_hint_x=.35, halign='left')
                layout.add_widget(lab2)
    
    class AddExam(Screen):
        namess = ObjectProperty(None)
        descc = ObjectProperty(None)
        deadlinee = ObjectProperty(None)
        reminder11 = ObjectProperty(None)
    
    
        def submit(self):
            if self.namess.text != "" and self.descc.text != "" and self.deadlinee.text != "" and self.reminder11.text != "":
    
                db2.add_exam(self.namess.text, self.descc.text, self.deadlinee.text, self.reminder11.text)
                self.reset()
                ue = UncompletedExam()
                return ue.next()
    
            else:
                invalidForm()
    
        def update_value(self, inst):
            """ Update textinput value on popup close """
            self.text = "%s-%s-%s" % tuple(self.cal.active_date)
            self.focus = False
            App.get_running_app().root.ids.deadlinee.text = self.text
    
        def show_calendar(self):
            datePicker.show_popup(1, .3)
    
        def reset(self):
            self.namess.text = ""
            self.descc.text = ""
            self.deadlinee.text = ""
            self.reminder11.text = ""
    
    class DetailExam(Screen):
        pass
    
    class WindowsManager(ScreenManager):
        pass
    
    
    class Delete(Screen):
        pass
    
    
    class ListYPP(App):
        def build(self):
            return WindowsManager()
    
        def vibrate(self, time):
            vibrator.vibrate(time=5)
    
        def pattern(self, pattern):
            vibrator.pattern([0, 0, 1, 2])
    
        def exists(self):
            return self._exists()
    
        def cancel(self):
            self._cancel()
    
            # private
    
        def _vibrate(self, **kwargs):
            raise NotImplementedError()
    
        def _pattern(self, **kwargs):
            raise NotImplementedError()
    
        def _exists(self, **kwargs):
            raise NotImplementedError()
    
        def _cancel(self, **kwargs):
            raise NotImplementedError()
    
    def invalidLogin():
        pop = Popup(title='Invalid Login',
                    content=Label(text='Invalid username or password.'),
                    size_hint=(None, None), size=(300, 300))
        pop.open()
    
    
    def invalidForm():
        pop = Popup(title='Invalid Form',
                    content=Label(text='Please fill in all inputs with valid information.', font_size= 14.7),
                    size_hint=(None, None), size=(300, 300))
    
        pop.open()
    
    db2 = DataBase2("examdetail.txt")
    db = DataBase("taskdetail.txt")
    
    if __name__ == "__main__":
        ListYPP().run()
    
    
    database#1
    
    import datetime
    from KivyCalendar import DatePicker
    from kivy.config import Config
    
    Config.set('graphics', 'resizable', '0')
    Config.set('graphics', 'width', '300')
    
    class DataBase:
        def __init__(self, filename):
            self.filename = filename
            self.taskdetails = None
            self.file = None
            self.load()
    
        def load(self):
            self.file = open(self.filename, "r")
            self.taskdetails = {}
    
            for line in self.file:
                taskname, desc, deadline, reminder1 = line.strip().split(";")
                self.taskdetails[taskname] = (desc, deadline, reminder1)
            self.file.close()
    
        def add_task(self, taskname, desc, deadline, reminder1):
            if taskname.strip() not in self.taskdetails:
                self.taskdetails[taskname.strip()] = (desc.strip(), deadline.strip(), reminder1.strip())
                self.save()
                return 1
            else:
                print("Task Name exists already")
                return -1
    
        def get_data(self):
            FullDetails = self.taskdetails
            return FullDetails
    
        def save(self):
            with open(self.filename, "w") as f:
                for detail in self.taskdetails:
                    f.write(detail + ";" + self.taskdetails[detail][0] + ";" + self.taskdetails[detail][1] + ";" + self.taskdetails[detail][2] + "\n")
    
        @staticmethod
        def get_date():
            return str(datetime.datetime.now()).split(" ")[0]
    
    
    database#2
    
    import datetime
    class DataBase2:
        def __init__(self, filename):
            self.filename = filename
            self.examdetails = None
            self.file = None
            self.load()
    
        def load(self):
            self.file = open(self.filename, "r")
            self.examdetails = {}
    
            for line in self.file:
                examname, descc, deadlinee, reminder11 = line.strip().split(";")
                self.examdetails[examname] = (descc, deadlinee, reminder11)
            self.file.close()
    
        def add_exam(self, examname, descc, deadlinee, reminder11):
            if examname.strip() not in self.examdetails:
                self.examdetails[examname.strip()] = (descc.strip(), deadlinee.strip(), reminder11.strip())
                self.save()
                return 1
            else:
                print("Exam Name exists already")
                return -1
    
        def get_data(self):
            FullDetails = self.examdetails
            return FullDetails
    
        def save(self):
            with open(self.filename, "w") as f:
                for detail in self.examdetails:
                    f.write(detail + ";" + self.examdetails[detail][0] + ";" + self.examdetails[detail][1] + ";" + self.examdetails[detail][2] + "\n")
    
        @staticmethod
        def get_date():
            return str(datetime.datetime.now()).split(" ")[0]
    
    windows.kv
    
    #:import FadeTransition kivy.uix.screenmanager.FadeTransition
    
    :
        transition: FadeTransition()
        HalamanUtama:
        AddTask:
        DetailTask:
        UncompletedExam:
        AddExam:
        DetailExam:
        Delete:
    
    :
        name : "halamanutama"
        invoices:invoices
    
        FloatLayout:
            Image:
                source: 'REVISI TASK.jpg'
                pos_hint:{'left':1, 'top':1}
                size_hint : 1,1
                allow_stretch : True
                keep_ratio : False
    
        GridLayout:
            id: invoices
            cols: 1
            #orientation: "horizontal"
            padding : 5, 5
            spacing: 10, 10
            #size: 100, 50
            size_hint: 1, 0.7
            pos_hint: {'center_x':0.5, 'center_y':0.440}
    
    
            Button:
                text: ""
                background_color: 0,0,0,0
                canvas.before:
                    Color:
                        rgba: 0,0,0,1
                    Line:
                        width: 1
                        rectangle: self.x, self.y, self.width, self.height
                color: 0,0,0,1
                text_size: self.size
                halign: 'center'
                valign: 'middle'
    
            Button:
                text: ""
                background_color: 0,0,0,0
                canvas.before:
                    Color:
                        rgba: 0,0,0,1
                    Line:
                        width: 1
                        rectangle: self.x, self.y, self.width, self.height
                color: 0,0,0,1
                text_size: self.size
                halign: 'center'
                valign: 'middle'
    
            Button:
                text: ""
                background_color: 0,0,0,0
                canvas.before:
                    Color:
                        rgba: 0,0,0,1
                    Line:
                        width: 1
                        rectangle: self.x, self.y, self.width, self.height
                color: 0,0,0,1
                text_size: self.size
                halign: 'center'
                valign: 'middle'
    
            Button:
                text: ""
                background_color: 0,0,0,0
                canvas.before:
                    Color:
                        rgba: 0,0,0,1
                    Line:
                        width: 1
                        rectangle: self.x, self.y, self.width, self.height
                color: 0,0,0,1
                text_size: self.size
                halign: 'center'

Answer 1

你可以用PutExtra来做这件事