Python| kivy 中的手风琴

Kivy 是Python中一个独立于平台的 GUI 工具。因为它可以在Android、IOS、linux和Windows等平台上运行。它基本上是用来开发Android应用程序的，但这并不意味着它不能在桌面应用程序上使用。

Kivy Tutorial – Learn Kivy with Examples.

手风琴：

Accordion 小部件是一种菜单形式，其中选项垂直或水平堆叠，并且焦点所在的项目（当触摸时）打开以显示其内容。

它可以包含许多项目实例，每个实例都应包含一个根内容小部件。你最终会像一棵树一样。
当前实现将 AccordionItem 分为两部分：

1. 标题栏容器1个（kv模板制作）
2. 一个内容容器

您可以增加标题栏的默认大小：

root = Accordion(min_space=60)

或将方向更改为垂直：

root = Accordion(orientation=’vertical’)

AccordionItem 更具可配置性，您可以在项目折叠或打开时设置自己的标题背景：

item = AccordionItem(background_normal=’image_when_collapsed.png’, 
background_selected=’image_when_selected.png’)

Basic Approach:
1) import kivy
2) import kivyApp
3) import Accordion, AccordionItem
4) import Label
5) Create App class
6) return Layout/widget/Class(according to requirement)
7) Run an instance of the class

方法的实施：

Python3

# How to use Accordion in kivy using .kv file
  
# Program to Show how to create a switch
# 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')
  
# The Accordion widget is a form of menu
# where the options are stacked either vertically
# or horizontally and the item in focus
# (when touched) opens up to display its content.
from kivy.uix.accordion import Accordion, AccordionItem
 
# Label is the text which we want
# to add on our window, give to
# the buttons and so on
from kivy.uix.label import Label
 
 
# Create the App class
class AccordionApp(App):
     
    def build(self):
        root = Accordion()
        root = Accordion(min_space = 60)
        # Providing the orientation
        root = Accordion(orientation ='vertical')
 
        # Adding text to each Accordion
        for x in range(5):
            item = AccordionItem(title ='Title % d' % x)
            item.add_widget(Label(text ='GFG is Good Website for CSE Students\n' * 5))
            root.add_widget(item)
 
        # Return the root
        return root
 
# Run the App
if __name__ == '__main__':
    AccordionApp().run()

输出：