Python使用.kv文件的滑块小部件 _Python.kv文件

Kivy是Python中与平台无关的GUI工具。由于它可以在Android, IOS, Linux和Windows等操作系统上运行。它基本上是用于开发Android应用程序, 但这并不意味着它不能在桌面应用程序上使用。

????Kivy教程–通过示例学习Kivy。

滑杆：
要使用滑块, 首先必须导入包含滑块的所有功能的模块, 即

Module: kivy.uix.slider

创建Slider时要遵循的基本方法–

1) import kivy 2) import kivyApp 3) import BoxLayout 4) set minimum version(optional) 5) Extend the class 6) set up .kv file (name same as the Slider.kv) 7) Run an instance of the class

以下是带有.kv文件的代码实现滑块的代码：

# main.py file of slider # base Class of your App inherits from the App class. # app:always refers to the instance of your application from kivy.app import App# BoxLayout arranges children in a vertical or horizontal box. # or help to put the children at the desired location. from kivy.uix.boxlayout import BoxLayout # creating the root widget used in .kv file class SliderWidget(BoxLayout): pass# class in which name .kv file must be named Slider.kv. # or creating the App class class Slider(App): def build( self ): # returning the instance of SliderWidget class return SliderWidget()# run the app if __name__ = = '__main__' : Slider().run()

现在.kv文件：
Slider.kv
文件

< SliderWidget> :# creating the Slider Slider:# giving the orientation of Slider orientation: "vertical" min : 0# minimum value of Slider max : 100 # maximum value of Slider value: 0# initial value of Slider# when slider moves then to increase value on_value:label1.text = str ( int ( self .value))# Adding label Label: id : label1 font_size: "30sp" text: "0" color: 1 , 0 , 0 , 1Slider: orientation: "horizontal" min : 0 max : 100 value: 30 on_value:label2.text = str ( int ( self .value))Label: id : label2 font_size: "30sp" text: "30" color: 0 , 0 , 1 , 1

输出如下：