python - 如何在kivy中随时间变化功能？

问题描述

比如这里是我的代码：

 from kivy.properties import ObjectProperty
 from kivymd.uix.button import MDFlatButton
 from kivymd.uix.picker import MDDatePicker
 from kivymd.app import MDApp
 from kivy.lang import Builder
 from kivymd.uix.dialog import MDDialog
 from kivy.core.window import Window
 from kivy.uix.screenmanager import ScreenManager, Screen
 from kivy.config import Config

 Config.set('kivy', 'keyboard_mode', 'systemandmulti')

 Window.size = (400, 600)


 class Log_in(Screen, MDApp):
    def dop(self):
       username = self.ids["user"].text
       password = self.ids["passw"].text
       if username == "MD" and password == "kivy":
          self.manager.current = "main"
       else:
          dial = MDDialog(text='Opps Wrong!', background_color=(0.3, 1, 1, 0.3), size_hint=(0.5, 0.5),
                        radius=[20, 7, 20, 7], buttons=[
                MDFlatButton(
                    text="Ok", text_color=self.theme_cls.primary_color, on_release=lambda x: dial.dismiss()
                ), ], )
        dial.open()

  class Main(Screen, MDApp):
     date_y = ObjectProperty()
         def date_se(self):
    y = self.date_y
    try:
        MDDatePicker(self.today_date, y.year, y.month, y.day).open()
    except AttributeError:
        MDDatePicker(self.today_date).open()

def today_date(self, date_obj):
    self.today_date = date_obj

如您所见，有 2 的屏幕。

class WindowManager(ScreenManager):
pass


kv = Builder.load_file("Wolf.kv")
class Wolf(MDApp):
def build(self):
    self.theme_cls.primary_palette = "Yellow"
    self.theme_cls.primary_hue = "900"
    self.theme_cls.theme_style = "Dark"
    return kv


Wolf().run()

这是我的 kivy 文件（kv）：

  WindowManager:
  Log_in:
  Main:

  <Log_in>:
      name:"log"
      FloatLayout:
         orientation:"vertical"
         canvas.before:
         Color:
            rgba:rgba('#f2991b')
        Triangle:
            points:[0,self.size[1],self.size[0],self.size[1],0,self.size[1]-(0.4 *self.size[1])]
        Color:
            rgba:rgba('#f2881b')
        Triangle:
            points:[0,self.size[1],self.size[0],self.size[1],self.size[0],self.size[1]-(0.4 *self.size[1])]
    MDIconButton:
        text:'Nxt'
        icon:"account"
        size_hint:0.15,0.15
        pos_hint:{'x':0.43,'y':0.55}
    MDTextField:
        id: user
        hint_text : "Enter your Name"
        helper_text : "Have u forget it?"
        helper_text_mode : "on_focus"
        icon_right : "android"
        size_hint_x :None
        width : '300'
        pos_hint:{'center_x':0.5,'center_y':0.5}
        multiline : False
        foreground_color:0,0,1,1
        on_text_validate: app.on_text_validate_callback(self)
    MDTextField:
        id: passw
        hint_text : "Enter your Password"
        helper_text : "cAsE SeNsItIvE"
        helper_text_mode : "on_focus"
        icon_right : "key"
        size_hint_x :None
        width : '300'
        pos_hint:{'center_x':0.5,'center_y':0.4}
        multiline : False
        password:True
    MDRectangleFlatButton:
        id:btn
        text:"Log in"
        pos_hint:{'center_x': 0.5, 'center_y': 0.3}
        on_press:root.dop()
 <Main>:
 name:"main"
    FloatLayout:
       MDIconButton:
          icon:"alarm"
          text:"Hlo"
          on_press:root.date_se()
          size_hint:0.15,0.15
          pos_hint:{'x':0.03,'y':0.8}

现在我面临的问题是，我希望 21 天后用户名应该自动更改为“RIOT”，密码自动更改为“zxcvbnm”。正如大多数防病毒软件中发生的那样，在某些日子后他们会要求提供许可证密钥。我只想免费试用我的应用程序 21 天。我认为时钟功能将与 if 语句一起使用，但如何使用？谢谢帮助:)

标签： pythonpython-3.xkivykivymd

python - 如何在kivy中随时间变化功能？

问题描述

解决方案

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