在 kivy 退出时做点啥
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【中文标题】在 kivy 退出时做点啥【英文标题】:do something on exiting in kivy在 kivy 退出时做点什么 【发布时间】:2021-03-25 23:50:31 【问题描述】:我正在 kivy 中制作一个应用程序,所以我想在退出 kivy 应用程序时做一些事情,运行该代码背景而不显示它
即使直接进入主页并在后台删除它也必须工作 like this image 它必须工作,然后将所有 python 代码转换为 apk
# import kivy module
import kivy
# base Class of your App inherits from the App class.
# app:always refers to the instance of your application
from kivy.app import App
# this restrict the kivy version i.e
# below this kivy version you cannot
# use the app or software
kivy.require('1.9.0')
# Importing Drop-down from the module to use in the program
from kivy.uix.dropdown import DropDown
# The Button is a Label with associated actions
# that are triggered when the button is pressed
# (or released after a click / touch)
from kivy.uix.button import Button
# another way used to run kivy app
from kivy.base import runTouchApp
# create a dropdown with 10 buttons
dropdown = DropDown()
for index in range(10):
# Adding button in drop down list
btn = Button(text ='Value % d' % index, size_hint_y = None, height = 40)
# binding the button to show the text when selected
btn.bind(on_release = lambda btn: dropdown.select(btn.text))
# then add the button inside the dropdown
dropdown.add_widget(btn)
# create a big main button
mainbutton = Button(text ='Hello', size_hint =(None, None), pos =(350, 300))
# show the dropdown menu when the main button is released
# note: all the bind() calls pass the instance of the caller
# (here, the mainbutton instance) as the first argument of the callback
# (here, dropdown.open.).
mainbutton.bind(on_release = dropdown.open)
# one last thing, listen for the selection in the
# dropdown list and assign the data to the button text.
dropdown.bind(on_select = lambda instance, x: setattr(mainbutton, 'text', x))
# runtouchApp:
# If you pass only a widget in runtouchApp(), a Window will
# be created and your widget will be added to the window
# as the root widget.
runTouchApp(mainbutton)
【问题讨论】:
【参考方案1】:您可以使用App
的on_stop
属性来做到这一点,例如documented。当然,您需要创建一个App 才能使用它。
【讨论】:
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