Kivy is a platform independent GUI tool in Python. As it can be run on Android, IOS, linux and Windows etc. It is basically used to develop the Android application, but it does not mean that it can not be used on Desktops applications.
Slider:
To work with the slider you first have to import the module which consists all features, functions of the slider i.e.
Module: kivy.uix.slider
Basic Approach to follow while creating Slider –
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
Below is the code implementing slider with .kv file:
# 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() |
Now the .kv file : Slider.kv file
<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, 1 Slider: 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 |
Output:
For slider without .kv file, refer – Python | Slider widget in Kivy
