使用 Kivymd,我试图让 MDList 中的按钮转到页面,但是当我尝试设置 on_release 时没有任何反应。有人请帮忙。我需要能够单击退出按钮,并最好使用 python 函数将我重定向到登录屏幕,因为我还想在单击按钮后做其他事情
主文件
import kivy
from kivy.uix.widget import Widget
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.behaviors.button import ButtonBehavior
from kivymd.app import MDApp
from kivymd.theming import ThemeManager
class SignInScreen(Screen):
pass
class HomeScreen(Screen):
pass
class MenuScreen(Screen):
pass
class ButtonGrid(ButtonBehavior, BoxLayout):
pass
class AttendanceApp(MDApp):
def build(self):
#self.theme_cls.primary_palette = "LightBlue"
#self.theme_cls.accent_palette = "Red"
return HomeScreen()
def change_theme(self, primary_palette, accent_palette):
pass
#theme_cls = ThemeManager()
def signin_pressed(self, instance):
pass
if __name__ == "__main__":
AttendanceApp().run()
考勤.kv
# Filename: Attendance.kv
#:import utils kivy.utils
#screens
<SignInScreen>
#code
<HomeScreen>
NavigationLayout:
ScreenManager:
Screen:
BoxLayout:
orientation: "vertical"
MDToolbar:
title: "Home"
left_action_items: [["menu", lambda x: nav_menu.set_state()]]
elevation: 10
MDLabel:
text: "Content"
halign: "center"
MDNavigationDrawer:
id: nav_menu
MenuScreen:
ScreenManager:
id: sm_menu
SignInScreen:
name: "signin"
HomeScreen:
name: "home"
MenuScreen:
name: "menu"
<MenuScreen>
ScrollView:
MDList:
id: scroll
OneLineAvatarIconListItem:
id: menu_home
text: "Home"
elevation: 10
IconLeftWidget:
icon: "home"
OneLineAvatarIconListItem:
id: menu_schedule
text: "Schedule"
elevation: 10
IconLeftWidget:
icon: "calendar-month"
OneLineAvatarIconListItem:
id: menu_take
text: "Take"
elevation: 10
IconLeftWidget:
icon: "account-multiple"
OneLineAvatarIconListItem:
id: menu_rosters
text: "Rosters"
elevation: 10
IconLeftWidget:
icon: "clipboard-list-outline"
OneLineAvatarIconListItem:
id: menu_subs
text: "Subs"
elevation: 10
IconLeftWidget:
icon: "account-multiple-outline"
OneLineAvatarIconListItem:
id: menu_help
text: "Help"
elevation: 10
IconLeftWidget:
icon: "lightbulb-on-outline"
OneLineAvatarIconListItem:
id: menu_settings
text: "Settings"
elevation: 10
IconLeftWidget:
icon: "settings-outline"
OneLineAvatarIconListItem:
id: menu_signout
text: "Sign Out"
elevation: 10
on_release: "signin"
IconLeftWidget:
icon: "exit-to-app"