Kivy is a platform-independent GUI tool in Python. It can run on Android, IOS, Linux and Windows, etc. This is the only GUI library from python which can independently run on the android device even we can use it on Raspberry pi also. It is an open-source Python library for the rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. Its graphic engine is built over OpenGL ES 2, and has fast graphics pipeline. If you are new to kivy you can learn from this link.
In this article, we will develop a GUI window using kivy framework of python and we will add a button on this window. Usually what happens is we attach a method to a button and the whole method is defined in another python file but this time we will add button code to same .kv file
The IDE we are going to use is pycharm and the version of python we are going to use is python 3.6.
Approach
- Create new project in pycharm
- Installing required packages
- Add new python file in venv directory of your project. To add file video has been attaches.
- Add new .kv file in project. Implementation us depicted here:
- Adding code to both files
main.py
Python3
# importing image widget of kivy frameworkfrom kivy.uix.image import Imagefrom kivy.uix.button import Buttonfrom kivy.app import App# importing boxlayout for our applicationfrom kivy.uix.boxlayout import BoxLayout# this will connect MainWindow which we have created in ui.kv with main.py fileclass MainWindow(BoxLayout): pass"""Note:- keep in mind that our .kv file name was ui.kv so our rendering class(class which will render our application) name should be like uiApp otherwise we will not get the desired output!!"""# this is the main class which will render the whole applicationclass uiApp(App): # method which will render our application def build(self): return MainWindow()# running the applicationuiApp().run() |
window which contains our button:
<MainWindow>:
BoxLayout:
# adding a button
Button:
# text which will appear on button
text:”click here to open google search”
on_release:
#importing webbrowser module
import webbrowser
# it will open google window in your browser
webbrowser.open(‘http://www.google.com’)
print(“see these scripts are now running using kivy file”)
Output:
when you click on button then it will open the google page and print the content of print statement defined in ui.kv file on terminal, you can see in the given video.
