Image Viewer Example - Kivy Typing CST Test

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Image Viewer Example — Kivy Code

Displays and switches between images using buttons in Kivy.

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.image import Image
from kivy.uix.button import Button

class ImageViewer(App):
	def build(self):
		self.images = ['1.png','2.png','3.png']
		self.index = 0
		self.layout = BoxLayout(orientation='vertical')
		self.img = Image(source=self.images[self.index])
		btn_next = Button(text='Next', on_press=lambda x: self.next_img())
		self.layout.add_widget(self.img)
		self.layout.add_widget(btn_next)
		return self.layout

	def next_img(self):
		self.index = (self.index + 1) % len(self.images)
		self.img.source = self.images[self.index]

if __name__ == '__main__':
	ImageViewer().run()

Kivy Language Guide

Kivy is an open-source Python framework for building cross-platform multitouch applications on Android, iOS, Windows, macOS, Linux, and Raspberry Pi. It provides a UI toolkit, gesture support, animations, layouts, and a declarative KV language for rapid app development.

Primary Use Cases

▸Mobile apps (Android/iOS)
▸Touchscreen kiosks and dashboards
▸Cross-platform GUI apps in Python
▸Prototyping and educational tools
▸Raspberry Pi and hardware interfaces

Notable Features

▸KV language for declarative UI
▸GPU-accelerated rendering
▸Multitouch gesture framework
▸Cross-platform build tools
▸Rich widget and layout system

Origin & Creator

Kivy was created by Mathieu Virbel and the Kivy Organization, evolving from the PyMT project and released publicly in 2011 as a modern Python GUI + mobile app framework.

Industrial Note

Kivy is especially loved in education, research environments, rapid prototyping, Raspberry Pi projects, and Python-first development teams requiring cross-platform touch UIs.

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Image Viewer Example — Kivy Code

Displays and switches between images using buttons in Kivy.

from kivy.app import App from kivy.uix.boxlayout import BoxLayout from kivy.uix.image import Image from kivy.uix.button import Button class ImageViewer(App): def build(self): self.images = ['1.png','2.png','3.png'] self.index = 0 self.layout = BoxLayout(orientation='vertical') self.img = Image(source=self.images[self.index]) btn_next = Button(text='Next', on_press=lambda x: self.next_img()) self.layout.add_widget(self.img) self.layout.add_widget(btn_next) return self.layout def next_img(self): self.index = (self.index + 1) % len(self.images) self.img.source = self.images[self.index] if __name__ == '__main__': ImageViewer().run()

Kivy Language Guide

Primary Use Cases

▸Mobile apps (Android/iOS)
▸Touchscreen kiosks and dashboards
▸Cross-platform GUI apps in Python
▸Prototyping and educational tools
▸Raspberry Pi and hardware interfaces

Notable Features

▸KV language for declarative UI
▸GPU-accelerated rendering
▸Multitouch gesture framework
▸Cross-platform build tools
▸Rich widget and layout system

Origin & Creator

Kivy was created by Mathieu Virbel and the Kivy Organization, evolving from the PyMT project and released publicly in 2011 as a modern Python GUI + mobile app framework.

Industrial Note

Kivy is especially loved in education, research environments, rapid prototyping, Raspberry Pi projects, and Python-first development teams requiring cross-platform touch UIs.