Python | kivy 中的文件选择器
原文:https://www.geeksforgeeks.org/python-file-chooser-in-kivy/
Kivy 是 Python 中独立于平台的 GUI 工具。因为它可以在安卓、IOS、linux 和视窗等平台上运行。它基本上是用来开发安卓应用程序的,但并不意味着它不能在桌面应用程序上使用。
文件选择器:
文件选择器模块提供了描述、显示和浏览文件系统的各种类。它就像“我的电脑”一样简单,我们可以从中选择系统中的任何文件。
- 文件选择列表视图将文件条目显示为垂直列表中的文本项目,文件夹可以折叠和展开。
- 文件选择视图从左到右显示图标和文本,并根据需要换行。
注意:以上两点都提供了滚动、选择和基本的用户交互。
Basic Approach
1) import kivy
2) import kivyApp
3) import Boxlayot
4) Set minimum version(optional)
5) create layout class
6) create App class
7) create .kv file
8) return Layout/widget/Class(according to requirement)
9) Run an instance of the class or App
实施办法: 。py 文件
Python 3
# Program to explain how to use File chooser in kivy
# 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')
# BoxLayout arranges widgets in either in
# a vertical fashion that is one on top of
# another or in a horizontal fashion
# that is one after another.
from kivy.uix.boxlayout import BoxLayout
# create the layout class
class Filechooser(BoxLayout):
def select(self, *args):
try: self.label.text = args[1][0]
except: pass
# Create the App class
class FileApp(App):
def build(self):
return Filechooser()
# run the App
if __name__ == '__main__':
FileApp().run()
。kv 文件
Python 3
#, kv file implementation
<Filechooser>:
label: label
# Providing the orientation
orientation: 'vertical'
# Creating the File list / icon view
BoxLayout:
# Creating list view one side
FileChooserListView:
canvas.before:
Color:
rgb: .4, .5, .5
Rectangle:
pos: self.pos
size: self.size
on_selection: root.select(*args)
# Creating Icon view other side
FileChooserIconView:
canvas.before:
Color:
rgb: .5, .4, .5
Rectangle:
pos: self.pos
size: self.size
on_selection: root.select(*args)
# Adding label
Label:
id: label
size_hint_y: .1
canvas.before:
Color:
rgb: .5, .5, .4
Rectangle:
pos: self.pos
size: self.size
输出:
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